JOURNAL of

Volume 18, Supplementto Number 3
15 September1998
JOURNALof
VERTEBRATE
PALEONTOLOGY
ABSTRACTSOF PAPERS
FIFTY-EIGHTHANNUAL MEETING
SOCIETYOF VERTEBRATEPALEONTOLOGY
SNOWBIRDSKI AND SUMMERRESORT
SNOWBIRD.UTAH
SEPTEMBER
3O-OCTOBER
3, 1998
SOCIETY OF VERTEBRATE PALEONTOLOGY
rssN 0272-4634
CIII and CIV. subsequent anatomical differentiation reUects a fiame shift in the
developntental processes acting on the digit anlagen in later ontogeny. such that
C I I i s t r a n s f o r m e d i n t o a t h u m b . C I I I i n r o a n i n d e x f i n g e r .a n d C I I I i n t o a m i d d l e
f i n g e r . P r e l i m i n a r y r e s u l t s f r o m b x p e r i m e n t a l J y - i n d u c e trl n d n a t u r a l l v - o c c u r r i n g
variation in archosaur digit homology provide tests tbr this hypornesrs.
INFORMATION ON DINOSAUR RESPIRATORY PHYSIOLOGY AND THE
STRUCTURE OF THE THEROPOD LUNG
GEIST. Nicholas R.. Zoology Department. Oregon Srate Univcrsiry. 3029
C o r d l e y H a l l . C o r v a l l i s ,O R , 9 7 3 3 t - 2 9 t 4 . U S A : H I L L E N I L J S .W i i l e m
J . . l ) e p a r m e n l o f B i o l o g y . C o l i e g e O f C h a r l e s r o n .6 6 G e o r g e S t . .
C h a r l e s t o n .S C . 2 9 4 2 4 - ( X X ) 1 U
. SA.
T h e p r e s e n c eo f n a s a l r e s p i r a t o r y t u r b i n a t e s i n m a n t m a l s a n d b i r d s i s c a u s a l l y _
l i n k e d t o e l e v a r e dr o u t i n e r a t e s o l v e n t i l a t i o n a n d h i g h r e s t i n g l e v e l s o l ' o x y g e n
c o n s u m p t i o n . A b s e n c e o f r e s p i r a r o r y t u r b i n a r e si n e x t i n c t r e t r a p o d si s a l i k i l y
i n d e x o f l o w v e n r i l a t o r y r a r e s a s s ( ) c i r t e dw i r h e c t o t h e r n r i cm e r a b o l i c p h y s i o l o g y .
CT-scansindicate thar the relativcly narrow nasal cavities ol- sevcral genera-ol.
Late cretaceous theropods were inadecluatet. have housed respiratory (urbinates.
New data on the cranial morphology of several theropod. sauropoci.ancl ornithis_
chian dinosaurs confirm the widespread absence of respiratory turhinates in these
taxa as well.
A d d i t i o n a l l y . ' t h e s t r u c t u r e o f t h e r e c e n t l y c l e s c r i b e dI t a l i a n m a n i r a p t o r a nt h e _
r o p o d " l t l p l o n r : r p r o v i d e s c o m p e l l i n g n e w e v i d e n c e f b r t h e e x i s t e n c eo f a h e p a t i c _
p i s t o n r l i a p h r a r n t i n t h e r o p o d d i n o s l u r s . S p c ' c i l i c a l l v .i n , S c r T r i o r r rr, h
_e
r,rrorphol_
o g v a n d o r i e n t a l i o n o f t h e I i v e r . t r a c h e . i .a n c j c o l o l a r e c l o s c l v c o n t p a r a b l c1 o l h e
i i n a r ( i l r v o l - t h e s c l c a t u r e s i n l i v i n - u c r o c o d i l i a n s . i i n d c o n t r i r s ts h a r P l l r r , i t h t h e i r
i l r r a n - s c ' r c n ti n h i r d s . R e l i a n c e < t n a h e p a l i c p i s t o n n t c c h a n i s n t p r i t b a b l v c o n _
s t r a i n e dl h c r o p o d s f r o m d e l e l o p i n g a n a r i a n - s t 1 , l el u n g / a i r s a c r e \ p i r J k ) t , \ s \ s ! e n t .
T A P I ' I o N O M Y O F T I I R E E C E N ] ' ] ? ( . ) . S A L I R UB, O
' NI]I]EDS IN THTJ
DINOSAI]R PARK FORMA'fION. AI-BERTA. CANAI)A
CETTY. Michael A: EBERTH. David A: BRINKMAN. Donalcill. ancl
R Y A N . M i c h a e l . 1 .I i o v a l l ' v r r e l l M u s e u m o l p a l t i e o n t o l o g y .B o x
7 5 0 0 . D r u n r h e l l e r .A B T O J 0 Y 0 . C A N A D A .
S y s t c n r a t i cs a n t p l i n g o f t h r e e b o n e b c d s c o n s i s r i n g u l n r o s t e x c l u s i v e l l , o f t h e d i s _
articulated remains of Centnt.suuru5Tpe fiL!.\ was conclucted in the lowcr % of the
DinosaLrr Park Formation at Dinosirur provincial park iirnr 1995- 1997. An area
o f a t l e a s r I 2 n t : o f e a c h b o n e b e d u ' a s s , v s t e m a t i c a l l ey x c a v a t e da n d m r p p e d . M o r e
than 907 of identifiable elements belong to Certtro.stturu.srr7rcrltr.r,with bone
d e n s i t r ' r a n g i n r l i r r r n 7 0 - 1 8 0 b o n e s / r n r .c ( , t r ( ) ' u r r u s e l e n r e n t sa r e c o n r o l e t e l v
d i s a r t i c u l a t e dt n d f e p r e s e n ta r v i d e r a n g e o l a g e c l a s s e s .i r o m i n l h n r r . a t i u l r . A i l
of the honebeds occur in overbank nudstone fitcies ancl rre characterized by very
s i n r i l a r t a p h o n o n r i cs i g n a t u r e si n d i c u i v e o i n r u l t i - e v e n th i s t o r i e so f 1 ' l r x x i i n gs. c a r , enging and reworking. prior to final burial.
T a p h . n o n r i c i n c l i c a t o r ss L l c hi l s r h e w i n n . r v i r g o l s n r a l l e l e r . e n t s . n r i l c la b r a s i . n
o f b o n e s a n d p o o r a l i g n m e n t o l e l e n t e n t sd e m c l n s l r a t et l t a t t h e r e w a s a n r o d e s t
( n o n - c h r n n c l j z e r l td c g r e e o f h v c l r a u l i c r v o r k i n c j n l l u e n c i n g t h e h o n c h c d s .
Abra_
s i ( ) n o 1 t l x ) l h n r a r k s a n d b r o k L : nc c l g e si n d i c a t e t h a t s r n r e h v d r a u l i c u ' r k i r g . c c u r r e c l s u b s e q u e n r l yr o s c a v e n g i n g a n d / o r t r a m p l i n g . ' f h e b o n e s c x h i b i t f r e s h
b r e a k a s e a n d a n a l m o s t c o n r p l e t el a c k , l s u r l i c i a l w e a t h e r i n g \ \ , h i c l t i s c o l t s i s t e n t
L r f r e l a t i r e l v s h o r t p r e - b u r i a l r e s i c l e n c vo n t h e l l o ( ) d p l a i n . C h e r r i c a l e t c h i n g o f
corticrl bonc rnd thorough disarticulati.n .f tlrc carc.sscsare taphonorric inciicaiors c,rrsistentrvith sedinrent'lrgical cvidence that the bones wcre <Jeposited
i n t a a * e t . m u d d r ' . s u h t r . p i c a l e n v i r o n ' r e n t . I r u r t h e rc o r r p a r i s . n s r v i r h i n - c h a n n e l
b o n e b e c l si n s l l n d s t o n c f a c i e s m u s t n o \ r b e u n d e r t . l k e nt { ) b c t t e r u r r r j e r s t l n c tl } r e
p a l e o c ' c o l o l i c a lr e l a t i o n s h i p sb e t w e c n t h c s e d c p o s i t s .
P R O T O . . \ V IA N i \ F F I N I T Y O F T H I 1 P L t , S| ( ) R N t S ' f l t A C K N . { AK E R
C i l F - I t L I N S K I . G c r a r d . P o l . C e o l . I n s t . . I l a k o * i c c k a - 1 . W a r s a r v .{ X ) ( . } 7 5
P O L r \ N I ) : S A B A T H . K a r o l . I n s r . o i p a l e o b i o l o g r , .T r v a r i l a 5 l / - 5 - 5 .
Warsas'. (X)-llI u PO[-AND.
Despitc doubts cast ()lt sLrpposedprc-/\r( lu(()pter\..r clsteitlogical lnd some ich_
nological firssil record of birds. Pl<tiornis tracks display remarkably avian t'ea_
t u r e s .T h o s e d i s t i n c t i v e .s m a l l ( 3 _ 5 - - 5 n3 r n r l o n g ) f b o t p r i n r so c c u r i n t h e L . j .T r i a s s i c
o f V i r l i n i a . I - . J u r a s s i co f M a s s a c h u s c t t sa n d p o l a n d . T h e t r a c k s s h a r et w . t e a t u r e s
a b s e n l l r . n r n o n a v i a n d i n o s a u r t r a c k s : 1 1 ) b i r d l i k e r e r , e r s e dh a l l ' x : { l ) s r v e l l e d
p r o x i m a l p a d o 1 - r h ed i g i t I I I . w j t h n o l a t e r a l r o e s ' p r o x i n r a l p a c l s .
T h e P l a . t i o r n i . sa n d A r c . h u e o p r e t r- . rh a l l u r l e n g r h e q u u l r o n l y l / 3 o l t h e t h i r d
d i g i t l e n g t h . w h e r e a s h a l l u x o f l a t e r b i r d s . e . g . S i / r . / r , r i . ri,s n e a r l y h a l f a s l o n g a s
t h e t h i r d t o e . a n d i n s o m e m o d e r n l l v i n g b i r d s t h e s ed i g i r s a r e o f t h e s a n t e l e n g t h .
The relersed avian hallux and swelled proximal pad ol digit lll. extentling the
m a i n g r i p p i n g s u r f a c ea x i a l l y f r o r r t h e d i g i t I I I r o h a l l u x . e v i d e n t l y e n h a n c eg i a s p i n g a b i l i t ) , .T h i s f b o t a d a p t a t i o nm a y h a v e e v o l v e d p a r a l l e l t o w i n g s ' d e v e l o p m e n t .
compensating tbr the deterioration of the forelimbs' grasping functions. Thus. if
t h e h a l l u x e n l a r g e m e n ti n d e e d r e f l e c t sa n a d a p t a t i o n a lt r e n d o f b i r d f o o t e v o l u t i o n .
and assuming a cursorial hypothesis firr the origin of birds. rhe pl"ri.)r,ri., trackmaker might even have been a fairlv advanccd flving creatcrre.
46A
Plesi<trni,swouid imply emergence ot bircls as early as near the T-J bounclrry.
before the Maniraptora appeared. Thus. their avian traits. includinr: sicklc-clau,ed
p e d a l d i g i t I l - f o u n d r e c e n t l y i n r b i r c l R t r / r r a r z r .n a y h a v e b e e n i n h r , f i r c d l r ) n r
their protoitvian ancestor."not vlce versa.
EARLY EOCENE LAND MAMMALS FROM I-HE MTDDLE AND T]PPER
GHAZIJ FORMATION OF BALUCHISTAN (PAKISTAN)
C I N G E R I C H . P h i l i p D . , G e o l . S c i . l n d N l u s . P a l e o n r o l . .U n i r ' . N . l i c h i - r a n .
A n n A r b o r . M I , 4 8 1 0 9 - 1 0 7 9 : A R I F . M u h r m r n a d .G e o l . S t r r v .p a k . .
I s l a m a b a d :K H A N , I n r i z a r H u s s a i n . G e o l . S u r v . p a k . . e u e l r a : C L y D I l .
W i l l i a m C . . E a r t h S c i e n c e s .L . J n i vN
. c u . l . l a m p s h i r e .D u r h a l r . N H .
031324--3589
B:t - O C H . J o n i t r h a n1 . . C i e o l . S c i . a n c l N { u s . p r l e o n r o l . .
U n i v . M i c h i g a n ,A n n A r b o n M l . + t 3 1 0 9 - 1 0 7 9 .
T h e c o n d y l a r t h Q u e t u t t o t t l t u r a t h u i c a n t e l . n t n t t h c c o u l - b e a r i n gn t i c l c l l eC h a z i . j
Formation of the Sor Range near Quetta. Tu'o (lueilirclonids trc n()\\. Kn()\\.nlronl
middle Chazij coals near Mach. Thc uppcr Chazi.i Fornution netr
euctll is il
t h i c k s e q u e n c eo l r n u d s t ( ) n c - r i c hw i l l r v r r r c l - l i k e l l u ' i a l t l c p o s i t s r r i r h l i r n L l . n r c r
a t e s a t t h c b a s e i n p l a c e s a n d r v c l l c l e v c l o p e crl c l l o v . r c c l . a n d p u r p l c p a l c o s o l s
a b o v e . I t h a s y i c l d e d a d i v e r s i t v o l q u e t t a c _ r ' o n i da
s.large tillodont. ilnd r huno_
l o p h o d o n t p e r i s s o d a c t y l .A t K i n g r i . s o n r e l 5 O k r r r r o r h e e a s l . r h e u p p c f C i h a z i .ijs
m o r e s a n d r i c h a n d M u r r c e - i i k e . a n c l r v c l i r u n c l t i l l o d o n t s . p e r i s s o r i a c t v l sr.n r l l r r t h r a c o b u n i d s .b u t n o q u e t t . c y o n i d s . F . r a n r i n i l c r - r l l 1 ) n r u n d e r l n t l . r ' c r l r i n g r ' . r
n l a t i o n s i n d i c a t e t h a t G h a z i . in r a m m a l s i n I l a l u c h i s l u n c o n r e l r r n r p l u n k l t r n i c z o r c
P 6 a n d s h a l l o w b e n t h i c z o n e s S B f l l { } t n t i t i - \ , p f e s i a n ) . K L r l d i l n u - S u b ; i 1 hlrar' c l
m a n r m a l s f r o t n l ) u k i s l u r ra n r l I n d i a c o r n c l i r n t z o n c s P 9 l 0 a n d S B I I l . t r t , r r r l r
m i d d l e E . c e n e ) a . ( l r c p r c s e n .t I a l c r t a r r n i (r l o r r i r r r t c dh r r r t i i , t l u e rlr. I l r r r i h . r , r l
F o r n r a t i o nw a s s h c c lc i t s t u a r d t i l r r i r r t l l n t i r , l ' . r k i s t . r nt i , n r r r n o l l s h o r c i : l r r r r l e h a i n :
t l s n r o s t c o m p l e t e p r o x i m a l e x p r c s s i o nn L N ' b c ' i r r H r l a r i l \ t r r t r I l a P p e ( l i l s \ l l r r f c c
F o r n r a t i o nt h a t s p l r n S I 3 8 t h r o u g h S B l l - . l l
. S A U R O P O D C I I A N I A L E L E M F - N ' l S F I t O N . t N I , , \ l _ A \ \ , t : t i \ i l ) t _ t,(\ - t - l ( ) \ s ( ) l :
TITANOSAURID CRANIAL NiOItPHOI-(XJY
G O M A N I . E l i z a b e t h M . . D e p a r t m e n ro i C j e o l o s i c a lS c i e n c c s .S h u l c r
M u s e u n r . S o u r h e r n M e r h o c l i \ t L J l i v c rs i r v - D a l l a s . ' f X . 7 5 1 7 - i . t , S \ .
T i t a n o s a u r i d s h a v c b e e n c o n s i c l e r e da s h a v i n g l ) i p l t i l o t L r . s - l i k es k u l l s . i n c c r h e ,
c r a n i u m o f A n t ( r . t o . t ( ! r r t ! . \ , a t i l l l t O s l u r i t i - \ \ , l s f c c o n s t r u c t c dr r i t h l t n c l o n L a t c t l
p r e o r b i t a l r e g i o n . H O r v e v e r .r e c e n t s l u d i c s s u - q c e stth r t t h e c [ r n i a o l ' t i l r r i r s u r r r i t l s
a r e h i g h a n d s h o r t a s i n B r u c l t i o s a u n r . ra n c l( t t t u t r n r . r t t n r C
. r l.a c l i s t i cr n a l r s c : h r r . ,
b e e n o f l i t t l e h e l p i n s o l v i n g t h e p r o b l c n t o l t i r u n o s r u r i d c r . u n i . r rl n , , r l , h , , l , , l r l . r
c a u s e t i t a n o s a u r i d sh r v e o f l e n b e e n r e p r e s e t r t c da s b e i n l c l o s c l y r e l i l t c ( l t ( ) c i t h c f
c l i p l o d o c . i d s o r b r a c h i o s a u r i d sT
. h e r e i i r r c .r h e ( ) c c L r r r e n c.cf a b r s i c r a r i r r r r . r l u a r l
r a t e . J u g a l , p a r t i a l l r a x i l l a . p r e m a x i l l a . p t e r v - s o i d s c. c t o p t e r v L o i c l .c l c n r a r r .a n d I
s p f e n i a l o f M a l u t i . s t r r r u . s ,a t i t a n o s r u r i d . r n c l i t c l e n t l r v . 1 . s n r t l l c r t a r . n l a r n r
M a l a w i i s s i g n i l i c a n t .T h i s m a t e r i r l \ u g g c s r \ r h r t t i r r n r i s r u r i t l sh a \ c l c s : f c l f i l c r e ( l
n a s a l s t h a n D i p l o d o c u . s ,t h e r o s t r u t n i s s h o r t . l l r e c r r n i u n t i s h i ! h . t h c r ( ) ( ) l hr ( r *
i s e i t h e r a n t e r i o r l y f e s t r i c t c do r c x t c n ( l \ i r l o r r gh r l l t h c r l e n l a r r . i r n r l t l L r t l c c t h l r r e
primitivelv slightly brorcl or cvlinclricrl.
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L A N D M A M M A T - S A N D A R C H / \ E O C F _ 1 ' t rw H A t _ E S
C O S W A M I . A n . j a l i .D e p t . C l e o l o s i c aSl c i c n c c s t. . J n i l c r \ i r vo l N l i c h i u r r n .
A n n A r b o r _ M I . ; t r i 3 1 0 9(:I I N C E R I C t { . P h i l i p l ) . . D c p r . C i c o t o r i r . i r l
S c i e n c c sa n t i M u s . P a l e o n r o l o g r ' t- J n i v c r s i t l -o l l \ , 1 i c h i g a n,.\ n n \ r b ( ) r .
M I . . 1 8t { X ) t 0 7 9 .
I s o t o p i c a n a l y s i s o l p h o s p h a t eh a s b e e n u s c c l1 o i n l c r o s n r r r c g r r l l t o r r a r l l P t a r i o n
to ingestion ol' seit wirter early in *.hrlc c'.lrrti.'. \\t rriet{ l. cxlc.ri lhi: br
n t e a s u r i n gt h e i s o t o l t i c c o n t p o s i t i o n o t c l r b r r n r n d o x \ ! c n i l e n . r r l e l e l , l , , , n l r t . .
a n d p h o s p h a t ei n r * i c l c r r l l n r e o l - t c r r e s t r i a ln r i r n r r n l l s .t r a n s i t ( r n r r r r c h i r c ( ) . c r c s .
a r r c lm l r i n c a r c h a c o c c t e sS. ' O ( S M O W ) l r 1 ) n ln l r ( ) s l ) h a t rca n s e s l r r r n t 1 6 . - 5r L rl l . l
p e r n r i l f o r t e f r e s l r i t l K l t i r t l u r i u i r n c lL L t u t t t t t l l t r t t t i rfrr.o r t r l ( r . J t ( ) l 0 - i l i r l { r r l t s i
t i o n a l P o A r ' c c l r r .nrn t l 1 ) c t l u t t i . s r t 'r.nsd. l i i . + t o l i ) . - i l i r r n l r r i n c / l r ) r l l / . ) r . . , r r lB\ .t l , i , /
u t t ' t u s , D o r u d r t n , L \ t 1 dB o s i l ( ) . \ u u n t . \E. r r C i i ) l ) B ) l 1 1 ) n t c r r b ( ) n r t c r a n g c c l r . ( ) n r S . 9
to 8.2 for Kltirthuriu and ltutrrnitlltuuirr. l -5.0 to -, I I.-l lirr prr(rrllrir.
ij.+ fol
Dalurtiste.s. and 8.5 to -6.13 ft>r Rotllutt,trt.s. Iltbittt t,ttt.:.Donrdort. anrl grrrrlrr
s a a n r s . 6 r N Od o e s n o t d i s t i n g u i s h l a n c l . t r r n s i l i o r r a l . o r n a r i n c n r a n t n r r l : i n o u r
s a m p l e .L i g h t e r b r r C c l i s t i n g u i s l r eP
s u k i t t ' t t t . rs' r . r r l l l l r n d . t r i i r s i t i o n a l .r n c l ' r r i n e
n r a m m a l s s t u d i e d h c r e . L i g h t e r E r r c ' a l t r e s g c n e r a l l v c o r r e l a t er r i t b r r r - r r c s r r i r l
d i e t , b r r t h e a v y 6 r ' C v a l u e s o b t a i n e r !I o r K l r i i l r , u i , t L r ' n Lt lt t t t n t i t l l t u r t i l / . ( ) 4 r p l i c a r a
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to any sinrplechange in environmenl or 1th1'siolouv.
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Lansing. MI. 48824,1045. USA.
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