PBDB Collection

Ghost Ranch Quarry (Triassic of the United States)

Also known as Whitaker Quarry, Coelophysis Quarry

Where: Rio Arriba County, New Mexico (36.3° N, 106.5° W: paleocoordinates 14.8° N, 46.4° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Siltstone Member (Chinle Formation), Rhaetian (208.5 - 201.3 Ma)

• Apachean LVF. Has been placed variously previously in the "upper Petrified Forest Member", in the "siltstone member" of the Chinle Formation, the Owl Rock Member and the Rock Point Member.

• group of beds-level stratigraphic resolution

Environment/lithology: crevasse splay; bioturbated, intraclastic, brown, green, red, muddy siltstone and pebbly, calcareous conglomerate

• "pond [underlying the main quarry layer] represented a topographic depression in which the dinosaurs and associated carcasses accumulated...carcasses were washed into the quarry by a single [flood] event that also ripped up underlying lacustrine siltstones and even introduced some bones into the uppermost level of the lacustrine interval"

• "The quarry itself is in a sequence of 11 siltstone beds...These beds are intensively bioturbated, contain many silt rip-up clasts"; "predominately of reddish-brown, yellowish-brown, and light greenish-grey siltstones interbedded with carbonate pebble conglomerates; 10-20 m of interbedded sandstone and siltstone comprise the top of the section."

Size classes: macrofossils, mesofossils, microfossils

Collected by E. H. Colbert in 1947-1982; reposited in the AMNH, CM, MCZ, YPM

Collection methods: bulk, quarrying, surface (float), surface (in situ), mechanical,

• 1947 AMNH expedition under E. H. Colbert

•Material also in MNA, NMMNH, TMP

Primary reference: E. H. Colbert. 1947. The little dinosaurs of Ghost Ranch. Natural History 59(9):392-399-427-428 [A. Behrensmeyer/A. Behrensmeyer/A. Murch]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 48422: authorized by Matthew Carrano, entered by Matthew Carrano on 18.03.2005, edited by Richard Butler, Bethany Allen and Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

unclassified
-	aff. Sinorichthyes sp.¹¹ aff. Sinorichthyes sp.¹¹ AMNH 5719
Branchiopoda
Diplostraca - Shipingiidae	Shipingia sp.⁹ Shipingia sp.⁹ Shen 1976 clam shrimp
Ostracoda
Podocopida - Darwinulidae	Darwinula sp.⁹ Darwinula sp.⁹ Brady and Robertson 1885 ostracod
Osteichthyes
Palaeonisciformes - Redfieldiidae	"Synorichthys cf. stewarti" = Lasalichthys stewarti⁹ "Synorichthys cf. stewarti" = Lasalichthys stewarti⁹ Gibson 2018 AMNH 5719
Coelacanthimorpha
Coelacanthiformes - Mawsoniidae	Chinlea sorenseni¹¹ Chinlea sorenseni¹¹ Schaeffer 1967 coelacanth AMNH 5657
Reptilia
-	Reptilia indet.⁹ Reptilia indet.⁹ Laurenti 1768 reptile NMMNH P-55352
Diapsida - Drepanosauridae	Drepanosauridae indet.⁸, Avicranium renestoi n. gen. n. sp.⁷, Drepanosaurus sp.⁸ Drepanosauridae indet.⁸ Berman and Reisz 1992 diapsid NMMNH P-57651, partially articulated hindlimb Avicranium renestoi n. gen. n. sp.⁷ Pritchard and Nesbitt 2017 diapsid AMNH FARB 30834, partial skull and articulated cervical series Drepanosaurus sp.⁸ Pinna 1980 diapsid GR 1113, pectoral girdle
Diapsida -	Archosauriformes indet.⁹ Archosauriformes indet.⁹ Gauthier 1986 archosauromorph NMMNH P-41307, 41601, 42571, teeth
Diapsida - Doswelliidae	Vancleavea campi⁶ Vancleavea campi⁶ Long and Murry 1995 archosauromorph
Pseudosuchia - Shuvosauridae	Effigia okeeffeae n. gen. n. sp.⁵ Effigia okeeffeae n. gen. n. sp.⁵ Nesbitt and Norell 2006 archosaur AMNH 30587 (holotype), articulated skeleton. AMNH 30588 -30590, postcranial material
Loricata -	Crocodylomorpha indet.⁴, Hesperosuchus cf. agilis¹⁰ Crocodylomorpha indet.⁴ crocodilian CM 73372, articulated skeleton. GR 1007, ilium Hesperosuchus cf. agilis¹⁰ Colbert 1952 crocodilian CM 29894, skull and articulated partial postcranial skeleton. NMMNH P-57654, osteoderms
Phytosauria - Parasuchidae	Redondasaurus gregorii³, Redondasaurus bermani n. sp.² Redondasaurus gregorii³ Hunt and Lucas 1993 archosaur NMMNH P-44920, skull of juvenile Redondasaurus bermani n. sp.² Hunt and Lucas 1993 archosaur "Nicrosaurus/Pseudopalatus-grade"
Theropoda -	Daemonosaurus chauliodus n. gen. n. sp.¹² Daemonosaurus chauliodus n. gen. n. sp.¹² Sues et al. 2011 theropod CM 76821, nearly complete but crushed skull and anterior cervical vertebrae
Theropoda - Coelophysidae	Coelophysis bauri n. sp. Coelophysis bauri n. sp. Cope 1887 coelophysoid Numerus skeletons including designated neotype material for Coelophysis bauri
Dinosauromorpha - Silesauridae	Eucoelophysis sp.⁹ Eucoelophysis sp.⁹ Sullivan and Lucas 1999 ornithodiran TMP 84-63-33, partial skeleton
Eosuchia -	Whitakersaurus bermani n. gen. n. sp.¹ Whitakersaurus bermani n. gen. n. sp.¹ Heckert et al. 2008 lepidosaur

¹Heckert et al. 2008; ²Hunt and Lucas 1993; ³Lucas et al. 2013; ⁴Nesbitt 2011; ⁵Nesbitt and Norell 2006; ⁶Nesbitt et al. 2009; ⁷Pritchard and Nesbitt 2017; ⁸Renesto et al. 2010; ⁹Rinehart et al. 2009; ¹⁰Sachs et al. 2019; ¹¹Schaeffer 1967; ¹²Sues et al. 2011