Bulletins of American paleontology (Bull. Am. paleontol.) Vol 227376193536

^xv

'i

J .1

BULLETINS
AMERICAN

PALEONTOLOGY
VOL. XXII

1935-1936

,\J'

\

Ithaca,

New York
1936

..«

.

J

qV-

CONTENTS OF VOLUME XXII
Bulletin No.
73

Plate

Pennsylvanian Ostracoda of the

Oklahoma

By Herbert
74.

75.

Page

Ardmore Basin,
1-13

1-1S5

14

186-196

15-22

197-270

23-31

271-361

Heni-y Bradfield

Seven new species of Foranlinifera from the Tertiary
of the Gulf Coast
By Wade H. Hadley, Jr.

The stratigraphy and paleontology of northwestern
Pennsylvania.

Part II:

Paleontology. Section

The Cephalopod fauna of the Concwango
series of the upper Devonian in New York an

A:

1

Pennsylvania
By E. H. Flower and K. E. Caster.
76.

Cherry Valley Cephalopods
By Eoiisseau H. Flower.




r'


AUG 2

1937

BUI^lvETINS
..

•'^HU.

i'

OF

AMERICAN PALEONTOIvOGY
Vol. 22

No. 73

Pennsylvanian Ostracoda

of the

Ardmore Basin. Oklahoma

By Herbert Henry Bradfield

Ja)ii(arv ii

Ithaca,

,

1935

New York,

U. S. A.

-|


Figure J, Frontispiece

iiliiliaiiiMiiflini



Submitted in partial fuliilliiiont of the requirements for tlie degree of
Doctor of Pliilosopliy in the Department of Geology in the Graduate School
of Indiana University, June, 1933

PENNSYLVANIAN OSTRACODA OF THE

ARDMORE

BASIN,

OKLAHOMA

BY

Herbert Henry Bradfield
PAGIi.

INTRODUCTION

'

7

ACKNOWLEDGMENTS

9

STRATIGRAPHY

9

A.

SPRINGER FORMATION

R.

DORNICK HILLS FORMATION
Jolliff

9
II

limestone (12); Otterville limestone (12); Bost-

wick member; Lester limestone (13); Pumpkin Creek
limestone (13); Fauna (13)
c.

deese formation
Devil's Kitchen member
Confederate

D.

vs.

13
Arnold limestone

(13);

chert cong:lomerate

(14);

Fauna

(14V,
(14)

HOXBAR FORIMATION

16

Confederate-Westheimer member (16); Union DairyCrinerville member (17); Anadarche limestone (17);

Daube limestone
E.
F.

(18)

FAUNAE CHART

18

CORRELATION

21

ORIENTATION OF THE CARAPACE
SYSTEMATIC DESCRIPTIONS

FAMILY APARCHiTiDAE

LTlrich

22
29

and Bassler

Genus Paraparchites Ulrich and Bassler
FAMILY primitiidae l^lricli and Bassler
Genus Coryellina, n. gen.
Genus Mammoides, n. gen.
.

FAMILY kloedenellidae Ulrich and Bassler
Genus .Tonesina Ulrich and Bassler
Genus Sansabella Roundy
Genus Kirkbyina Ulrich and Bassler

29
-

29
:55

35
37

38

38
44
45


Bulletin 73

Genus Nuferella,

-

n. gen.

FAMILY BEYRICHIIDAE JonCS

47
47
49

Genus HoUinella Coryell
Genus Hollites Coryell and Sample
FAMILY KiRKBYiDAE Ulrich and Bassler

Genus
Genus
Genus
Genus
Genus
Genus

49

Kirkbya Jones
Ulrichia Jones
Amphissites Girty
Knightina Kellett

-

Roundyella, n. gen.
Scaberina, n. gen.

Genus Glyptopleura Girty

68

'

69

Kellett

Genus Moorea Jones and Kirkby
Genus Youngiella Jones and Kirkby
Genus Moorites Coryell and Billings

FAMILY CYTHERIDAE

50
53

54
64
66
67

68

FAMILY GYLPTOPLEURIDAE Girty
FAMILY YOUNGIELLIDAE

45

—

70
72
73

-

Baircl

73

Genus Monoceratina Roth

74

FAMILY BAIRDITDAE Sars

7^

Genus
Genus
Genus
Genus
Genus
Genus
Genus
Genus
Genus

Bairdia

McCoy

Bairdiacypris,

Bythocypris

n.

-

-

.

gen.

Brady

Healdiacypris, n. gen.
Waylandella Coryell and Billings

Macrocyprls Brady
Healdia Roundy

-

-._

.

Setninolites Coryell
Harltonella, n. gen.

FAMILY CYTHERELLIDAE SarS
Genus
Genus
Genus
Genus

Cytherella
Cavellina Coryell
Sulcella Coryell and
Cavellinella, n.

78
93

93
103
103
104
104
115
118

121
-

.

Sample

gen.

OSTRACODA OF UNCERTAIN POSITION
Genus Cyathus Roth and Skinner
Genus Ardmorea, n. gen.
Genus Schmidtella Ulrich
New Genus ?
Genus Binodella, n. gen.
,

REGISTER OF LOCALITIES

137

-

-.:

122
129
134
136

137
138
139
140
140

141


PENNSYLVANIAN OSTRACODA OF THE ARDMORE
BASIN,

OKLAHOMA

INTRODUCTION
The outcropping Pennsylvanian sediments

of

the

Ardmore

Basin occupy a strategic position between the exposures of Pennsylvanian age in central Oklahoma and rocks of similar age m
Unfortunately the area is completely separated from
Texas.
both, and because of

its

isolation

and the character of the

sedi-

ments, correlation has been extremely difficult with units of simi-

age to the north and south.
areas of Pennsylvanian exposure might be considered as
occurring in very large inliers formed by the erosion and re-

lar

The

moval of younger Carboniferous and Early Cretaceous deposits.
The exposures are terminated on the north by the Arbuckle upon the south and east by the overlapping Lower Cretaceous,
and on the west by overlapping late Permo-Carboniferous Red
The exposed formations consist mainly of shales and
Beds.
Strucsandstones, with a few relatively thin beds of limestone.

lift,

turally the area

may

be divided into three parts, the north part,

lying next to the Arbuckle Mountains, in which the
tural feature

is

the

Caddo

main

struc-

Anticline; the south part, lying adja-

Overbrook Anticline is lothe Ardmore Syncline, in which the

cent to the Criner Hills, in which the

and the middle
town of Ardmore lies.

cated

;

The area

part,

of outcrop

two townships

at the

is

largely confined to Carter County, only

north edge of Love County having Penn-

sylvanian rocks exposed at the surface.

These sediments were discussed and majiped in a rather genwav by TafP who named the Caney shale, and called a'l the
Coldston'-' sub(;verl\ing Penns\lvanian the Clenn formation.

eral

'Taff, J. A.. Geol. Atlas U. S. Geol.
vey, Prof. Paper ;il, IDOi.

-.^GoldEton,

W.

L., Jr., Bull.

Survey, folio

Am. Assoc.

'JS,

1903; U. S. Geol. Sur-

Pet. Geol.. vol.

d.

\n>.

r,-2;3,

1^22.


Bulletin 73

8

8

members: from

divided the Glenn formation into five

youngest, the Springer, Otterville,
Aliser"

bar.

Cup

oldest to

and Hox-

Coral, Deese,

on the geologic map of Oklahoma included the

Springer with the Caney formation, and mapped that above as
Glenn. The first detailed mapping of the area was by Tominson*.

He

carefully

mapped

all

the resistant

members, and quite

successfully attempted the solution of their relations to one an-

In very few cases did he err in the actual mapping of
any of these beds, and what is still more remarkable, he came
very close to the ^correct identification of the beds north of Ardother.

more with those on

the south side of the syncline, using only

lithology as the basis

Springer, Deese, and

of

Tomlinson

correlation.

Hoxbar members

raised

the

of Goldston to forma-

and included Goldston's Otterville and Cup Coral
members in a new formation, the Dornick Hills. In addition
to this, Tomlinson named practically all of the limestone and
sandstone members of any importance.
Girty and Roundy^' have collected and identified severa megafaunules from the Pennsylvanian of the Ardmore Basin. Harlton" described numerous Foraminifera and Ostracoda from this
area, but without any attempt to indicate the exact horizon of
tional rank,

their occurrence, or their ranges.

The purpose

of the present paper

is

to give the results of a

systematic study of the Ostracoda from these rocks, using great
care to indicate the exact horizon of occurrence, and in so far
as possible

The

the range of each species.

last

is

a

difficult

problem.

Great thicknesses of barren shales and sandy sediments occur in which hardly a fossil can be found, weathering
has made fossils from many samples unidentifiable, and the
extremely high folding has so crushed and lacerated the speci-

mens
species

that

in

present

many

faunules

only

a

small

can be safely identified.

percentage of the

Continued

sampling

3Miser, H. D., Geologic Map of Oklahoma, 1927.
iTomlinson, C. W., Okla. Geol. Surv.. Bull. 46, 1929.
•'Girty, Geo. H., and Roundy, P. V., Bull. Am. Assoc. Pet. Geol., vol.
331-349, 1923.
GHarlton, Jour. Pal., vol. 1, no. 3, pp. 203-212, 1927; Jour. Pal., vol.
•

2,

pp. 132-141, 1928.

8,

pp.

2,

no.

I

Pennsylvanian Ostkacoda

9

and stuch

:

Bradfield

no doubt add many species

will

in

9

the

future, and

contribute to the ranges of those already described.
the collecting

was done

b}-

Most

of

the writer in the }ears 1928 to 193 1.

ACKNOWLEDGMENTS
The

make

writer wishes to

who have

grateful

acknowledgment

to

a.

any wa\ aided in this research. lispecial y
to Dr. M. P. White, of Ardmore, Oklahoma, for aid in collecting and for other valuable favors to Dr. C. W. Tomlinson, of

those

in

;

Ardmore, Oklahoma, for suggestions as to fossil localities and
for the use of his maps to Mr. R. W. Whiteside, Tulsa, Oklahoma, for material; to Prof E. C. Case, and Prof. G. M. Ehiers,
;

.'

of the Universit}- of Michigan, for guiding research in the year

1929

;

lo

Dr. H. N. Coryell, of Columbia University, for exam-

ining r,ian\
tions

;

of the drawings and commenting on the identifica-

and most of

all,

to Prof. J. J-

Cumings, of Indiana University,
aid in completing the research

Gratitude

is

Galloway and Prof. E. R.
valuable criticism and

for

and reading the manuscript.
Graduate Council of Indiana

also expressed to the

University for a University Fellowship during the \ear 1932-33.

STRATIGRAPHY
The Penns}lvanian sediments

of die

Ardmore

I'asin are

di-

vided into five formations, which are, from the base upward.
Springer, Dornick Hills,
latter consists of

Deese,

Hoxbar, and Pontotoc.

The

conglomerates and Red Beds produced by the

folding and erosion of the Arbuckle Mountain Region.

These

marked unconformit}- upon not only the preceding Pennsylvanian but upon all rocks of Paleozoic age.
Since they are
for the most part unfossiliferous, and more closel)- related to
the Red Reds above the}' will not be further considered in this
lie

with

paper.

SPRINCEK FORMATION
This formalicjn comprises 3,000

feel or

more of black bitumin-

ous shales with ferruginous, calcareous, and ankeritic concretions alternating with four ])rominent sandstones.

stones,

from the base ui^ward. have been named

b\

These sandTomlinson.


10

BULIETIN 73

10

FIGURE

2

PENNSYLVANIAN OF THE ARDMORE BASIN
PONTOTOC ^

^

H
:d

H

Gcnerahz-cd Section
tnoinlij

'^

from
I

Northv^esf of Ardmorc

H
Anadarche.

fs.

"
Confederate

lUni on

(Tom/msonin
7i

Dee selection)

\

MAIN BRAOVINA ZONE
Huferella inf rcifucns

Duirij Is t

i

i

S

1
j

flyMocypris saaoKwocnsi'sV Confederate

Chert Conql

M E50L0BUS

TOP CHONETES

XONE

l^
J
kj^yra^

i

"2.

3

I

wat^laridclla

Arnold

B ^
5 "

^oltCYtO'^i

deesen

jp PurnpKin CreeK
Letter Is
_)

o

l~\
'-'

(3

/Jo-"

BostwicH

Oticrville.

Jcinif

g-

«q«3 Cori^ellina capan

Devi/'s Kitchen

^

"

Is

s

O
z

I

g^pg

Boirdio C itriformr.

Horlfcnella ardn
C^lherella brevr.

l5

1=

ZONE OF ABUNDANT HVPERAMMINA GRACILIS
CC
LU
jjj

Primrc^e.

s

Lake Ardrnorc

55

z
CC

Overbrooh ss

CL

in

Rod Club

S5

Abundant

f/afienediests of Haplcphrugmcidvi

' s,p

HH Bradfield ,\93i

r

N
O
Z


PENNSYIA'ANIAN OSTltAOODA

It

]<0(1

Club

Club, Overbrook,
is

11

Bl!ADK]ELD

:

Lake Ardmore, and Primrose.

a sandy zone at

the base of the

thickness from 250 feet to 400 feet.

Sprin^t^er,

The

The Rod

and ranges

in

thin shales interbedded

sandy member contain tin)-, flattened tests of HaplophragThe shale must be boiled and
moides:' in great abundance.
washed until all of the silt\' material is removed, however, in

The Overbrook sandstone, a massive bed
order to see them.
in this

about 1,000 feet above the Rod
saturated with asphalt in the more northwesterly

45 to TOO feet
Club.

It

is

in thickness, lies

About 400 to 500 feet above the Overbrook is the
Lake Ardmore sandstone, a small member only 15 to 20 feet
At this horizon molds of coiled cephalopods have been
thick.
These are thought by Dr. Charles E. Decker, and Dr.
found.
Raymond C. Moore^ to indicate earliest Morrow age. Mega-

exposures.

fossi^s are

in the

very rare

often very abundant.

Springer, although foraminifera are

From 250

to

500

above the Lake

feet

member. This is a zone of calcareous,
Ardmore
from 150 to 250 feet in thickness.
sandstone
thin-bedded
hard,
feet
of shale constituting the upper
The remaining 800 to 1,000
is

the Primrose

part of the Springer formation contains abundant

Hyperammina

gracilis Waters, and other foraminifera similar to those in the

Dornick Hills shales below the Otterville limestone. No megafossils have been found, but if found they should be like those
Any ostracode fauna
of the Otterville and Jolliff limestones.
found in this interval should have a large number of species in
common with the Otterville and Jollifif limestones.

DORNICK HILLS FORMATION
Deposition had apparently been continuous from Caney into
At the end of Springer time an uplift occurred

Springer time.

in the region of the

Criner Hills, which was probably contem-

poraneous with the elevation of the ancestral Wichitas.
the Springer and

Caney

was
Tomlinson has
the source of the Dornick Hill

eroded deep into the older Palezoic limestones.
conclusively

shown

that this

is

conglomerates.
TTomlinson,

All of

shales were removed, and the area

C. W., Okla. Geol. Surv., Bull. 4G, p.

14,

1929.


Bulletin 73

12

Lhe Joliiif.

formation because

Sy,camore.

—

i he lowest member of the Dornick Hihs
This was taken by iomimson as the base of this

limestune.

Julliff
IS

12

the hrst limestone above the Mississippian

it is

consists

it

of 4 to

15

of conglomerate and

feet

ihe fauna of this limestone is much
that of the Otterviiie limestone above and the intervening

fossiiiferous limestone.
like

shale.

Otterviiie limestone.

formation

is

ferruginous
oolites,

and

member

the Otterviiie limestone.

limestone,
shell

The

with lime.

—The next

It is

characteristically

of the Dornick Hills
a thm-bedded, platy,

composed of

pebbles,

fragments which are usually heavily coated

thickness varies from 10 to 70

shale interval between the Otterviiie and Joliff

( ?)

is

feet.

The

about 250 to

300 feet, north of Ardmore. According to Tomiinson the supposed Jolliff is 1,000 feet below the Otterviiie limestone in the

Farther to the northwest the
northern part of Love County.
disappears entirely, and there appears to be not more than
200 feet of shale below the Otterviiie before typical Springer is
reached. This extraordinary thinning is not so astounding when
one considers that the Dornick Hills formation as a whole has

Jolliff

a thickness of about 4,000 feet in northern Love County, but

is

apparently not more than 1,000 feet thick at the west end of the

So great a thinning must mean that the
source of the sediments was largely to the southeast in Llanoria,
in spite of the heavy conglomerates derived from the Crinet

Arbuckle Mountains.

Hills.

It is

Otterviiie

is

quite possible that the limestone occurring below the

not always the same bed, but a zone of potential

limestones with local lentils developed from place to place.

Any

limestone occurring below the Otterviiie in the lower Dornick
Hills or the upper part of the Springer
lar in lithology

would no doubt be simi

and paleontology.

—

Bostwick member. About 750 feet above the Otterviiie is the
Bostwick member. It is a massive limestone conglomerate with
the greatest development around the Criner Hills.
The maxi-

mum,

thickness

is

around 300

feet.

Tomiinson reports pebbles

over 6 inches in diameter near the Criner Hills, but to the southeast the .conglomerates grade into limestones,

and

they grade into sandstone and finally disappear.

to the north


Pennsvi.vani.w Osthacoda

lo

:

13

l-!i;.\i)KiKi,i)

Lester Hincsfoiie.- -The next prominent limestone above the

Lostwick member

is the Lester limestone.
The interval between
400 to 500 feet north of Ardmore, but twice that at

the south edge of Carter Count}'.

two

the

is

Puiiipkiu Creek limestone.

— The

Pumpkin Creek

limestone

constitutes the upper part of the Dornick Hills, and consists of

two or perhaps three distinct ledges. These, with perhaps the
Lester in places, were Goldston's "Cup Coral member."
The
main i'umpkin Creek limestone is 900 to 1,000 feet above the
Boslwick horizon north of Ardmore, and twice that in northern
Love County.
fauna. The Dornick Hills .formation has a large and varied

—

Foraminifera, Br)ozoa, brachiopods, gastropods, pelecy-

fauna.

Among

pods, conodonts (?), and ostracodes are abundant.
atter there are

many which

are characteristic.

zvapanuckaensis Harlton and P. ottervill.cus

teristic of

are character-

both the middle and lower Dornick Hills.

Monoceratina are abundant

M.

n. sp.

of the lower part, while P. dornickhillicus n. sp.

istic

is

charac-

Species of

lower part, but one species

in the

dornickhillica extends to the Bostwick

Jonesina arcuata

the

Paraparchites

horizon

or

above.

Dornick Hills form.

a characteristic

Kirkbya hendensis, K. jolliffana, Amphissdes rugosus, A. marginiferus, A. cuiniiigsi, n. sp., A. rothi n. sp., A. confluens n. sp.,

.1.

is

alticostatus n. sp. are

all

characteristic of

the

lower

part.

BaircAa ardmorensis and Bythocypris tomlinsoni seem to be charof

ac. eristic

the

entire

The lower Dornick

formation.

Hills

ostracodes indicate a rather definite correlation with the lower

Bend

of Texas, and

Wapanucka

limestone and Johns

Valley

shale norih and east of the Arbuckle Mountains.

DEESE FORMATION
This

formation,

mainly of gray and

6,000

to

tan, often

impure sandstones.
thin limestones, only

7,000

feet

in

thickness,

consists

very sandy, shales and numerous

While there are numerous sandstones and
two are of sufficient importance to have

been named.
Devil's

Kitchen member.

— About

1,000

feet

above the top


Bulletin 73

14

of the Dornick Hills

is

l4

the Devil's Kitchen

member.

This con-

It is
sists of about 500 feet of massivdy bedded sandstones.
Ardmore
are
separated
of
which
south
comprised of two ledges,

by very fossiliferous limestone and calcareous shale.

—

Arnold limestone. A little more than a third of the way below the top of the formation is the Arnold limestone. It is
about 50 feet thick north of Ardmore and forms a conspicuous

ridge, but south of Ardmore it is only doubtfully recognized.
The extreme abundance of sponge spicules is the most characteristic

feature of this limestone.

—

Confederate vs. chert conglomerate. The top of the Deese
formation has been taken at the base of the highest and most
conspicuous limestone in the NE. l^ sec. 32, T. 3S, R. lE. This

Tomlinson correlated as Confederate, which is the base of the
Hoxbar formation south of Ardmore. The writer, however, believes that the chert .conglomerate about 800 feet below this
limestone is nearer the horizon of the true Confederate, and
draws the top of the Deese formation

This places

at this point.

the shale between the chert conglomerate and the "Confederate"

in

Hoxbar formation where

the

indicate that

it

An

should belong.

the faunal

the shortening of the Deese formation north of

The Dornick

matter of convergence.

Ardmore

the

is

Hills formation thins at

from the northern part of Love County

least 2,000 feet

more

relationships

additional factor in favor of

to the

In the north-

north-westerly exposures of that formation.

E. Tomlinson has included 7,350 feet
of sediments in the Deese, but only 6,700 feet 10 to 12 miles to
east part bf T. 4 S., R.

i

County-Love

the southeast on the Carter

1/4

of T. 3

5,000 feet.

Deese

S.,

R.

I

NE.

And

line.

1/4

Not more than 1,500

feet

can be

assigned

to

the

in the oil fields thirty miles to the northwest.

Fauna.

—The

Deese on the whole

of these formations.
in

County

of T. 4 S., R. i E. to the SW.
E. the thinning is from 7,350 feet to about

furthermore, from the

Where

is

the most unfossiliferous

fossils are

found they are usually

great abundance, but great thicknesses of sandy sediments

occur

in

which hardly a

gent search

may

in

fossil ,can

be found.

Continued

time eliminate some of these gaps.

dili-

In the

lower two-thirds of the Deese only two horizons of any import-


is

Pennsylvanian Ostracoda:

Brai)>'ield

15

ance have been found by the writer. These are in the Devil's
Kitchen member and near the Arnold. The preservation of the
fossils in the Arnold and the crushing in the associated shale^

have very considerably lessened their value even there. On tlie
whole, the Deese formation seems to be a faunal unit when the
member is taken as the top north of Ardmore, and the

chert

Confederate limestone south of Ardmore. The top of the Deese
is then the top of the Chonetes mesolobus and Fusulinella zones.

The

collection of Girty

and Roundy (station 4050) which Tom-

linson assigned to the uppermost Deese and possib.y in part to
the Confederate, is believed to be not from near the "Confeder-

ate" or highest limestone at that place but from near the chert
conglomerate a little farther north. Several reasons can be advanced for this conclusion. The most abundant fauna occurs
above and below the chert conglomerate and not at the limestone

Chonetes mesolobus, which they reported in their colcan be found abundantly just below the chert conglom-

above.
lection,

erate but not above,

and thirdly

their location corresponds

much

better with the chert conglomerate than with the limestone above.

Their description was "center west [meaning east] edge of sec.
32", T. 3 S., R. I E., but "about
mile north of Deese, Okla."

%

where the limestone crosses the road,
but about three-quarters of a mile to the chert conglomerate and
It is

a short half mile to

the fossiliferous beds.

Below

this chert

Numerous

linella.

may

be found Chonetes mesolobus and Fusu-

species of Bairdia are found, which, although

characteristic of the Deese

may range down

Creek limestone with some

slight variation.

B. dornickhillensis, B. crossa, B. warthini,

among

the most characteristic.

The

first

more

Pumpkin

Bairdia punctata,

and B. whitesidei are

occurs in the Confeder-

ate limestone also, but does not range so

while the last one seems to be

into the

low as the next three,

characteristic of the middle

two-thirds of the Deese. Hillinella kellettae o,ccurs rather abundabove the Arnold limestone.
Abundant specimens of

antl\'

Brac'yina holdenvillensis are found immediately below the chert
conglomerate, but from there on down to the Arnold limestone
the\' are very rare.
They are abundant above in the lower Hoxbar,

and

will

be discussed further in that connection.

Bulletin 73

l*)

16

HOXBAR FORMATION
This interesting formation has been the source of more
g aphic I'ifhcuities than
i.

purtant because

make

it

its

all

strat^-

the other formations combined.

It is

numerous limestones and abundant fauna

bear the brunt of upper Pennsylvanian inter-regionai

The

correlations.

disposed of

b}-

stratigraphic

difficulties

have been

large

_,'

the elimination of 1200 feet of section includnig

two limestone members from the lower Hoxbar. Stratigraphic
duplication causing an apparent increase in thickness of a formation

is

a

common

er.ce of the

Here the presAnadarche Creek obscured the stratiTomlinson identified the Confederate

thing in highly folded areas.

West Fork

of

graphic relations so that

and Union Dairy limestones just south of Ardmore with [wo
small limestone members in the upper part of the Deese formation, south of the West Fork of Anadarche Creek, and not witii
The poor de
the Westheimer and Crinerville members above.
velopment of the Crinerville there was no doubt a contributing
Tomhnson's sequence, therefore, was Confactor to the error.
federate limestone, Union Dairy limestone, Westheimer I'mestone, Crinerville limestone, Anadarche limestone, Daube limestone, and Zuckerman member, whereas the true sequence is
Confederate-Westheimer, Union Dairy-Crinerville, Anadarche,
Daube, and Zuckerman. This greatly simplifies both local and
regional correlations. So far as the writer is aware. Dr. Maynard
White of Ardmore, from the study of fusulines, was the first to
establish the identity of the Union Dairy with the Crinerville
and to him should go the credit. Dr. C. W. Tomlinson, Mr.
Morris Guthrey, and others are remapping the area in question,
and in time a revised map will no doubt be published.
The Hoxbar formation, of which about 3,500 feet is exposed,

and red shales alternating with thin

which become quite sandy toward the top of the

consists of blue, tan, brown,

limestones,

formation.

Confederate-Westheimer member.
conglomerate which occurs

at the

— This

base of the

is

'a

limestone

and

Hoxbar formation.

It is relatively free from conglomerate just south of Ardmore,
and contains a considerable fauna. Several species present are
common to the Union Dairy also, but two species of Cyathusf

and Byfhocypris sasakwaensis seem to be characteristic of this


Pennstlvanian Ostracoija

17

The

limestone.

:

has been described

latter

Bradpiei.d

17

from the Sasakwa

onl\-

limestone.

Union Dairy-Cruiervillc member.
dred feet above the basal
limestone,

shaly

member

This

and sandstone.

Bradyina holdenvillenss,

Triticites,

xtrataxis are extremelx abundant.

hundred

hve hun-

to

fossiliferous.

ver}-

is

and various species of TeAmong the ostracodes Para-

Scaberina

ardmorensis,

parchites:^

— Four

are lo to 30 feet of limestone,

Moorites

nodonmrginata,

minuius, Bairdia pompiliodes, B. menardensis, B. blakei, B.

bi-

and Bair-

coniis, B. amygdaliforniis, B. auricula, B. ciscoensis,

diacvpris delui, seem to be the most characteristic.
In the sha'e between the Confederate-Westheimer and

Union

Dair\-Crinerville, and above the chert conglomerate north of

Ai-dmore, ostracodes are extremely abundant.
far too

numerous

to list

The

species are

here, but on the faunal chart the Con-

federate-l-nion Dairy shale interval and the shale interval be-

tween the chert conglomerate and the "Confederate" north of
Ardmore are distinguished, so that the proper location of a spe-

An

interesting occurrence in this in-

cies ma\-

be readih' seen.

terval

the rare Nuferella infrequens, of

is

which only two spe-

cimens have been found, one south of Ardmore, and an identical
one north of Ardmore
occurrence

together

exactly the same horizon.

The

the

very

at aUiiost
in

least

at

three

instances

of

and Sansabella

and the
occurrence of the new genus Mammoides are worthy of note.
Continued sampling in this interval should be rewarded by many
similar but oppositely orientated Kirbyina laevis

zvhitei,

more

the great abundance of

Cytherella

afif.

gloria,

species.

In contrast to the shale just mentioned the shales between the

Union Dairy-Crinerville and Anadarche

many
is

not

furnished

species.

the

—

About 600 feet above the last memAnadarche limestone. At the base is a 10 foot bed of

.-Anadarche I'niestone.

ber

have

conglomerate, and

at the top

about 20 feet of dense, hard, bluish-

gra\' limestone.

Its fossils are

characterized

the great

b\'

phissites dattonensis,
ate variety.

usually not well preserved.

abundance of Ulrichia montosa,

and A. centronota, the

latter a

It is

Am-

very elong-


;

Bulletin 73

18

18

—

Daube limestone. Four hundred to
Anadarche is a io-£oot Hmestone

the

mediatel_y below this limestone
in thickness.

The Daube

This

carries

hundred feet above
the Daube.
Im-

a bed of coal about four feet

is

known

the only coal

is

six

called

in the

Ardmore

Easin.

fossils.

Abun-

abundant fusulines and other

dant foraminifera of the ramose type are characteristic.
ina holdenvillensisF
ally

the

in

found but

is

is

Brady-

not abundant and

The Bra.yina

the triloculine stage.

Union Dairy

it

usu-

is

holdenvillensis of

limestone, and above and be^ow the chert con-

glomerate northwest of Ardmore

is

very abundant, and

chambers

much

and
showing a second row of apertures on the last chamber similar
to those of Bradyina magna Roth and Skinner, from the McCoy
formation of Colorado.

The ostracodes which are characteristic of the Daube and adjacent shales are Hollinella ulrichi.
larger, often

having

five or six

in the last whorl,

Jonesina daubeana, Amphissites dattonensis

(extremely abun-

dant), Bairdia longirostris, Bythocypris scapha. Healcia simple:-

H. humilis, H. nucleolata, H. ovata, H.

alba, Cytherella

daube-

ana, Cavellina laevissimus.

The sandy limestone and
but few

and

fossils.

shales above the Daube have yielded
These consist mainly of high spired gas'ropods

tests of Spirillina.

FAUNAL CHART
The accompanying Faunal Chart shows

the occurrence of the

species described with reference to the resistent

a species occurs in the

member

members.

If

or immediately above or below

it is listed as coming from the member.
If the symbol is placed
between two members it indicates that the species occurs in that
interval, but cannot usually indicate the number of samples in
which it occurred or the exact relations to the members above

Poor preservation, due to weathering and mashing
from the high folding, coupled with the thick barren

stretches of shale, have considerably detracted from the value
or below.
resulting

o

f

the tabulation as a range chart.

The symbols A,
Rare
?

;

X

C,

and

R

indicate

Abundant, Common, and

indicates identification of poorly preserved specimens

indicates that the preservation

tification doubtful.

is

sufficiently

good but the iden-


19

Pennsvlvanian

Osti;a(^(:'1)a:

IWrXAL CHART

1

Buahkiki.d

in