The Siphuncle of Late Paleozoic Ammonoids

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OTS SIPBUNCLE OF M—— # 1880# Bel tr age zur Entwick© lung ages chi chte der fo a s ile n Oephalopoden# T heil II*

Die Goniatiten#

Clymenien# N autiliden# Belem nltiden und Spiruliden# nebst N&chtpag zu T heil X;

Palaeontographloa# Bd*

27# pp* 17-81# p is . 4-11. GRANDJEAN# F.# 1910# Le siphon dea ammonites e t des beXemnites:

See. Geol. France B u ll* # se r . 4# tome

10# pp. 496-519. HYATT# ALPHEUS# 1872# F o s s il cephalopoda of the Museum o f Comparative Zoology? embryology*

Harvard C ollege#,

Museum Comp* Z ool. B u ll.# v o l. 3# pp. 59-111# p is . 1-4. MILLER, A.

and FURNISH, W. M.# 1940# Permian ammonoids

o f the Guadalupe Mountain region and adjacent areas* G eol. Soq. Am. Speo. Paper 26, pp. 1-242# p is . 1-44. MUHIER-CHAXHAS# E.# 1875# Sur l e developpemant du phragmostracum des cephalopodes e t sur le s rapports zoologiquea des ammonites avec le s sp lru les*

Acad*

S o l. C. R .f 77# pp. 1557-1559* PLUMMER, F. B ., and SCOTT, GAYLE, 1937# Upper Paleozoic ammonites in Texas? The geology of Texas# Volume I l l s Texas Univ. B u ll. 3701, pp. 1-516, p is . 1-41.

SCH1NBEWQLP, 0 . H• , 1951 # Uber den Ammoni fcen-Sipho: Preuss* Geol* Land©sanst. S itzun gab er.# Heft 6 , pp. 197-209# pi* 5 . — ———-# 1939# Uber den Bau karboniacher G onlatitens P alaeon t» Z e lt s c h .# Bd* 21# pp. 42—67# p i. 4 . SCHOULGA-KESimiHKO# MARIE# 1926, N ouvelles donnees sur 1*organ !sation In terieu re des oonques des ammonites &e I 1etag© d 1A rtinski

Soo. N atu ralistea Moacou

B u ll*# nouv. se r .# tome 34# pp. 81-100# p i. 2# SMITH# J . P.# 1900# The development and phylogeny o f P la c e n tic e r a si

C a lifo rn ia Aoad. Sol* P roc.# 3d

sen** v o l. 1# pp* 181-240# p is . 24-28. 1903# The Carboniferous ammonoids of Americas E l Si. Ge°l* Survey Mon. 42# pp. 1-150, p is . 1-29. —

1914# A ccelera tio n of development in f o s s i l Cephalopoda:

Leland Stanford Junior Univ. Publica­

t io n s # pp. 1-30# p is . 1 -1 5 . SPATH# L. F ., 1933# The ev o lu tio n of the Cephalopoda# B io l. Reviews* v o l. 8# pp. 418-462*

EXPLANATION OF PLATE I

FIGS.

l* 2 ~ -G o n la tltes kentuckiensia M ille r , from the Caney shale near Ada, Oklahoma, x6 (State Univ. Iowa, 1718 and 1717). 5—-P ron orites praepermlcus Karpinsky, from the lower A rtinsklan beds about 15 km. below Gubakha on the Kosava Elver* western slope o f Middle U ra ls, U. S. B* H ., x25 (State Univ. Iowa, 1686).

Sam© specimen as tex t

fig u r e s 4 and 5A. 4—Oonloloboceraa w e lle r i Smith, from the F in is sh a le about 5 m iles e a s t o f Jacksboro, Texas, x25 (S ta te Univ. Iowa, 1745).

Sam© specimen

as te x t fig u r e 17, 5—E econ stru ction o f a p ro n o rltid , showing proto­ conch, I n i t i a l sta g es o f slphuncle, early septa* e t c , , x50* 6—E othalassoceras inexpectana M iller and Owen, from the C o ffe y v ille formation about f mi. south o f C o llin s v il le , Oklahoma, xlO (State U niv. Iowa, 1750). fig u r e 20A-2QD,

Sam© specimen as tex t

PLATE 1

GONIATITIDAE, PRONORITID AE, GASTRIOCERA TIDAE AND TKALASSOCERATIDAE

80 EXPLANATION OF PLATE 2

FIGS,

l » *NeQ»&lyphiooertta b e llllin e s t u m M ille r and Owen, from j u s t above the Mulky c o a l member o f the Cherokee form ation In sec* 3 6 , T* 43 H*# R* ■88 V«f Henry County, M isso u ri, x25 (S ta te U niv. Iowa, 1713)* 2«*» B o a sla n lte s o l i n e i (M iller and Owen), from the C o ffe y v ill© form ation about f mi* south o f C o l l i n s v i l l e , Oklahoma, x25 (S ta te U niv. Iowa, 1735)*

Same specimen as te x t fig u r e s 13A and

13B. 5—»K oaaianites w e lle r i (^ n it h ), from j u s t above the Tebo c o a l member o f the Cherokee sh a le in sec* 1 9 , T. 24 N*, R. 25 W*, Henry County, M isso u ri, x25 (S ta te U niv. Iowa, 1726)#

Same specimen

as t e x t fig u r e 14E* 4 - ~ E o a sla n ite s w e lle r i (S m ith ), from j u s t above the Mulky co a l member o f the Cherokee form ation in sec* 1 5 , T.43 JT., R* 28 W., Henry County, M isso u ri, x20 (S ta te U niv. Iowa, 1 7 2 3 ).

Same specimen as

t e x t fig u r e s 14A-14D* 5 -^ F seudo^aatrloceras su esa l (K arpinsky), from the lower A rtin sk ia n beds about 13 km* below Gubakha on the Kossva R iv er , w estern slo p e o f the Middle U r a ls , U* S* S. R ., x6 (S ta te Univ. Iowa, 1 7 3 9 ). Same specimen as t e x t fig u r e s 18A-13C.

PLATE 2

GASTRIOCERATIDAE

82 EXP M M TXOH OF PLATE 3

FIGS.

1—^Fseudoigastriooeraa sim u lator G ir ty , from the p h o sp h a tle sh a le member o f the Fhosphoria forma­ t io n on the sou th sid e o f Raymond canyon, S u b le tte Range, w estern Wyoming [near Raymond# Idaho]# x25 {S ta te U niv. Iowa# 1 7 4 0 ).

Same

specim en as t e x t fig u r e 18D. 2 — F r o p e r r in lte s baker! ( Plummer and S c o t t ) , from the Wolfcamp form ation about 10 m i. n o r th e a st o f the c r e s t o f Gugout Mountain, Brew ster County, T exas, x 2 5 .

(S ta te U niv. Iowa, 1 7 8 9 ).

See a ls o

fig u r e 3 on p la te 5* 3— Iraltoceras pygmaeum (Gem mellaro), from th e S o sio beds (Calcar© compatto) in the p rovin ce o f Palerm o, S i c i l y , x4Q (S ta te U niv. Iowa, 1 7 4 8 ). 4 — Schisfcoceras xniasouriense (M ille r and F a b er), from the F in is sh a le about 3 mi* e a s t o f Jack sb oro, T exas, xlO (S ta te U niv. Iowa, 31195*

Same s p e c i­

men as t e x t fig u r e 19A* 6 — Glmor pho car a a p o ll turn (Shumard), from j u s t above the Mulky c o a l member o f the Cherokee form ation in s e c . 3 6 , T. 43 N», R. 28 W., Henry County, M isso u r i, xlO (S ta te U niv. Iowa, 1 7 5 5 ). 6— Shumardites c u y le r i Plummer and S c o t t , from the F in is ahala about 4 f m i. northw est o f Jack sb oro, T exas, x3 (S ta te U niv. Iowa, 1 7 9 1 ).

Sf PLATE 3

G A 5 T K I 0 C E R A T I D A E , P E R R I K I T I D A E , CHEILOCERATI D A E , DIMORPIIOCERATIDAE, AND SHU;,' AR D I T I DAE

m EXPLANATION of PLATE 4 FIGS*

1 - 3 - -A d r ia n ite s dunbari M ille r and Furnish# from the Capitan e q u iv a len t (zone o f Timor1t e s ) along the s t r ik e between Cerro Wenoelao and Cerro E l In dio In the V a lle de Las D e llc la s o f Coahulla# Mexico# x25 (S ta te U niv. Iowa# 1765 [fig * 1 ] and 1764 [ f ig s . 2 #3] )*

F igu res

2 and 3 rep resen t same specimen as t e x t fig u r e s 22A and 225* 4—A gath iceras a p p lln i Plummer and S cott# from the Admiral form ation about 5 m i. sou th -south * w est o f Coleman# Texas# x25 (S ta te U niv. Iowa# 1 7 6 6 ).

Sam© specimen as te x t fig u r e s 21A

and 2IB* fc—»A gath iceras uralicum Karpinsky# from the A rtin sk la n beds on the r ig h t bank o f the Sim R iver a t the Sim Works In the.M iddle tfrals# U. S. S. R.# x25 (S ta te U niv. Iowa# 1 7 6 7 ).

Same specimen as te x t fig u r e 210.

PLATE 4

ADRIANITIDAE AND AGATHICERATIDAE

e x p l a n a t io n

F IG S .

of

PLATE 5

I*»Re&g®nooera8 guadalupense O ir ty , from th© South W ells lim estone o p p o site Long P oin t north o f D Ranch South W ells in th© Guadalupe Mountain r e g io n o f Culberson County, Texas, xlO (S ta te Gniv* Iowa, 1 7 8 2 ). 2—Waagenoceras d ie n e r i g l r t y l M ille r and F u rnish, from th© lo r d eq u iv a len t about 60 m* H* 3 5 ° E* o f La D lfunta In the V a lle de Las D e llc ia s o f C oahulla, M exico, x3 (S ta te U niv. Iowa, 1 7 8 4 ). 3— ^ P ro p errin ites baker! ( Plummer and S c o t t ) , from the Wolf camp form ation about 1 m i, n o rth ea st o f the c r e s t o f Dugout Mountain, Brewster County, Texas, x8 (S ta te TJniv* Iowa, 1 7 9 0 ). men as t e x t fig u r e 2 5 .

Same S p eci­

See a ls o fig u r e 2 on

p la te 3 , 4 — F e r r in ite s h l l l i (S m ith ), from the Leonard form ation about 1 m i, w est o f the southern end o f Iron Mountain, Brewster County, Texas, xS (S ta te Gniv* Iowa, 1785)*

Sam© specimen

as te x t fig u r e s 26A-26C. 5— P e r r ln ite s h l l l i (S m ith ), from the Leonard eq u iv a le n t about 1. km* S* 80° H. o f Puerto d© Sardlnas in the V a lle de Las D e llc ia s o f C oah u lla, M exico, x4 (S ta te U niv. Iowa, 1787)* specimen as te x t fig u r e 26D*

Sam©

CYCLOLOBIDAE AND PERRINITIDAE