Miller's Ranch Quarry: Norian, Texas
collected by S. Chatterjee 1977–
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Amphibia
- Temnospondyli
- Metoposauridae
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Metoposauridae indet.
Watson 1919
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Chatterjee 1985 | 1 specimen | ||||||||
TTU P 9216, partial skull and mandible | ||||||||||
= Dictyocephalus sp.
Ehrenberg 1860
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Small 1989 | |||||||||
= Apachesaurus gregorii
Hunt 1993
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Martz 2008 | |||||||||
Amphibia
- Temnospondyli
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Labyrinthodontia indet.
Owen 1859
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Chatterjee 1985 | 1 individual | ||||||||
TTU P 9168 (holotype), nearly complete skull | ||||||||||
= Latiscopus sp.
Wilson 1948
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Small 1989 | |||||||||
= Rileymillerus cosgriffi n. gen., n. sp.
Bolt and Chatterjee 2000
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Bolt and Chatterjee 2000 | |||||||||
? Rileymillerus cosgriffi
Bolt and Chatterjee 2000
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Bolt and Chatterjee 2000 | 1 specimen | ||||||||
TTU P-9170, vertebrae possibly referable to Rileymillerus | ||||||||||
= Rileymillerus cosgriffi
Bolt and Chatterjee 2000
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Martz et al. 2013 | |||||||||
Reptilia
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? Ornithodira indet.
Gauthier 1986
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Martz 2008 | 158 specimens | ||||||||
TTU P-10110-10198, "Procoelosaurus brevicollis"; TTU P10085-10095, 9489, 9490, "Pteromimus longicollis"; 57 additional specimens (mostly vertebrae) | ||||||||||
= Archosauriformes indet.
Gauthier 1986
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Martz et al. 2013 | |||||||||
"procoelous vertebrate taxa A and B" | ||||||||||
Parasuchia indet.
Huxley
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Martz 2008 | 2 specimens | ||||||||
synonym of Phytosauria | ||||||||||
TTU P-9231, 9236, forelimb elements | ||||||||||
Reptilia
- Parasuchidae
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Leptosuchus cf. crosbiensis
Case 1922
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Martz 2008 | 1 individual | ||||||||
TTU P-9234, skull | ||||||||||
= Leptosuchus sp.
Case 1922
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Martz et al. 2013 | |||||||||
Reptilia
- Shuvosauridae
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Shuvosaurus inexpectatus n. gen., n. sp.
Chatterjee 1993
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Chatterjee 1993 | 16 specimens | ||||||||
TTU P-9280 (holotype), skull; TTU P-9282 (paratype), skull; TTU P-9281 (paratype), cranial elements; TTU P-9021 (partim), partial lower jaw originally assigned to Technosaurus; TTU P-9235, vertebrae; TTU P-9003-9011, specimens originally assigned to Postosuchus kirkpatricki; TTU P-11045, scapula; TTU P-10969, quadrate | ||||||||||
Chatterjeea elegans n. gen., n. sp.
Long and Murry 1995
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Long and Murry 1995 | 1 specimen | ||||||||
synonym of Shuvosaurus inexpectatus | ||||||||||
TTU P-9001 (holotype), postcranial skeleton | ||||||||||
Reptilia
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Postosuchus sp.
Chatterjee 1985
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2 individuals | |||||||||
= Postosuchus kirkpatricki n. gen., n. sp.
Chatterjee 1985
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Chatterjee 1985 | |||||||||
TTU P-9000 (holotype), 9002 (paratype) skulls and postcrania | ||||||||||
Reptilia
- Sphenosuchidae
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Sphenosuchidae indet.
Huene 1922
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Martz 2008 | 4 specimens | ||||||||
TTU P-9466, 11277, 11443, 11444, premaxilla and femora | ||||||||||
Reptilia
- Stagonolepididae
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Stagonolepididae indet.
Lydekker 1887
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Martz 2008 | 4 specimens | ||||||||
TTU P-9205, 9206, 9227, 9171 | ||||||||||
Reptilia
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Desmatosuchus haplocerus
(Cope 1892)
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Small 1989 | 24 specimens | ||||||||
TTU P 9024 (holotype), 9023, 9025, 9170, 9207 (paratypes), 9204, 9225, 9226, 9229, 9416 (in part), 9419, 9420 (in part), 10083; 12 DMNH specimens | ||||||||||
= Desmatosuchus smalli n. sp.
Parker 2005
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Parker 2005 | |||||||||
Calyptosuchus wellesi
Long and Ballew 1985
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Martz et al. 2013 | 1 specimen | ||||||||
TTU-P09420 (in part) left and right paramedian osteoderms | ||||||||||
Typothorax coccinarum
Cope 1875
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Small 1989 | 1 individual | ||||||||
TTU P-9214, partial skull & skeleton; previously listed as TTU P-9208 | ||||||||||
= Typothorax sp.
Cope 1875
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Martz 2008 | |||||||||
Paratypothorax sp.
Long and Ballew 1985
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Small 1989 | 20 specimens | ||||||||
TTU P-9169, 9214, 9215, 9416 (in part), 11599, 12540; DMNH 9894, 9896, 9900, 9914, 9919, 9921, 9922, 9927, 9928, 9931, 9934, 9939, 9942, 9986 | ||||||||||
Dromomeron gregorii
Nesbitt et al. 2009
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Sarıgül 2016 | 3 specimens | ||||||||
TTU-P18331, TTU-P20046, fragments of left femur; TTU-P11282, complete left femur | ||||||||||
Dinosauriformes indet.
Novas 1992
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Nesbitt and Chatterjee 2008 | 1 individual | ||||||||
TTU P-11127, Silesaurus-like tibia | ||||||||||
Dinosauriformes indet.
Novas 1992
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Agnolin et al. 2016 | 1 specimen | ||||||||
= Soumyasaurus aenigmaticus n. gen., n. sp.
Sarigul et al. 2018
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Sarigul et al. 2018 | |||||||||
TTU-P11254 | ||||||||||
Ornithischia indet.
Seeley 1888
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1 individual | |||||||||
= Technosaurus smalli n. gen., n. sp.
Chatterjee 1984
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Chatterjee 1984 | |||||||||
TTU P 9021 (holotype), cranial elements & dorsal vertebra | ||||||||||
Protoavis texensis n. gen., n. sp.
Chatterjee 1991
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Chatterjee 1991 | 3 individuals | ||||||||
TTU P 9200 (holotype), partial skull and skeleton; TTU P 9201, partial skull/skeleton; TTU P 9350-9380, isolated elements. May represent a "fauna" of multiple taxa. However, according to Nesbitt et al. (2007) theropod elements include the astragalus/calcaneum (TTU P 9201), femur (TTU P 9200) and possibly the braincase (TTU P 9200) | ||||||||||
Coelophysoidea indet.
Holtz 1994
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Nesbitt and Chatterjee 2008 | 1 individual | ||||||||
TTU P-10071, right ilium | ||||||||||
= Neotheropoda indet.
Bakker 1986
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Martz et al. 2013 | |||||||||
Theropoda indet.
(Marsh 1881)
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Nesbitt and Chatterjee 2008 | 1 specimen | ||||||||
TTU P-11044, tibia. | ||||||||||
= Neotheropoda indet.
Bakker 1986
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Martz et al. 2013 | |||||||||
Reptilia
- Herrerasauridae
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Saurischia indet.
(Seeley 1888)
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Nesbitt and Chatterjee 2008 | 1 individual | ||||||||
TTU P-10082, partial pelvis, similar to Staurikosaurus | ||||||||||
= Herrerasauridae indet.
Benedetto 1973
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Martz et al. 2013 | |||||||||
Reptilia
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cf. Trilophosaurus sp.
Case 1928
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Martz 2008 | 1 specimen | ||||||||
TTU P-10698, tooth | ||||||||||
Trilophosaurus sp.
Case 1928
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Martz 2008 | 1 specimen | ||||||||
TTU P-10600, radius | ||||||||||
Protorosauria indet.
Huxley 1871
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Chatterjee 1985 | 1 specimen | ||||||||
TTU P-11338, cervical vertebra | ||||||||||
= Malerisaurus sp.
Chatterjee 1980
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Martz 2008 | |||||||||
= ? Malerisaurus langstoni
Chatterjee 1986
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Martz et al. 2013 | |||||||||
synonym of Trilophosaurus buettneri | ||||||||||
Trilophosaurus dornorum
Mueller and Parker 2006
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Mueller and Parker 2006 | 1 specimen | ||||||||
synonym of Trilophosaurus jacobsi | ||||||||||
TTU P-9497, tooth | ||||||||||
Reptilia
- Drepanosauridae
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? Drepanosauridae indet.
Berman and Reisz 1992
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Nesbitt et al. 2007 | |||||||||
TTU P-9201, Cervical vertebrae assigned to "Protoavis texensis" | ||||||||||
Reptilia
- Sphenodontia
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Sphenodontia indet.
(Jaekel 1910)
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Martz 2008 | 1 specimen | ||||||||
TTU P-9473, mandible | ||||||||||
Reptilia
- Clevosauridae
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cf. Clevosaurus sp.
Swinton 1939
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Martz 2008 | 1 specimen | ||||||||
TTU P-9472, premaxilla | ||||||||||
= Clevosauridae indet.
Fraser 1993
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Martz et al. 2013 | |||||||||
Reptilia
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Drepanosauridae indet.
Berman and Reisz 1992
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Martz 2008 | 3 specimens | ||||||||
TTU P-11237, 9604, 9606, vertebrae and scapulocoracoids | ||||||||||
= Simiosauria indet.
Senter 2004
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Martz et al. 2013 | |||||||||
Anomodontia
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Placerias sp.
Lucas 1904
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Lehman and Chatterjee 2005 | 1 specimen | ||||||||
= Dicynodontia indet.
Owen 1859
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Martz 2008 | |||||||||
TTU P-9417, femur | ||||||||||
= Kannemeyeriiformes indet.
Huene 1948
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Fröbisch 2009 | |||||||||
= ? Dicynodontia indet.
Owen 1859
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Martz et al. 2013 | |||||||||
Tritheledontidae
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Ictidosauria indet.
Broom 1929
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3 specimens | |||||||||
= Pachygenelus milleri n. sp.
Chatterjee 1983
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Chatterjee 1983 | |||||||||
nomen dubium belonging to Tritheledontidae | ||||||||||
TTU P 9020 (holotype), right dentary; TTU P-9245, tooth in partial mandible; TTU P-10826, isolated crown | ||||||||||
Bivalvia
- Unionida
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Unionoida indet.
Stoliczka 1871
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Chatterjee 1985 | |||||||||
corrected as Unionida | ||||||||||
see common names |
Geography
Country: | United States | State/province: | Texas | County: | Garza |
Coordinates: | 33.5° North, 101.3° West (view map) | ||||
Paleocoordinates: | 8.2° North, 41.5° West | ||||
Basis of coordinate: | stated in text | ||||
Geographic resolution: | small collection |
Time
Period: | Triassic | Epoch: | Late/Upper Triassic |
Stage: | Norian | 10 m.y. bin: | Triassic 4 |
*Period: | Late/Upper Triassic | ||
*International age/stage: | Carnian - Rhaetian | ||
Key time interval: | Norian | ||
Age range of interval: | 227.00000 - 208.50000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Geological group: | Dockum | Formation: | Cooper Canyon | ||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: About 50 metres above the contact between the top of the Trujillo Sandstone and the base of the Cooper Canyon Formation and can be correlated to lithologic unit 9 of the nearby type section of the Cooper Canyon Formation. Upper part of the "lower unit" of the formation. |
Lithology and environment
Primary lithology: | red mudstone |
Secondary lithology: | "cross stratification" sandstone |
Includes fossils? | Y |
Lithology description: red mudstone facies. ETE rock type adj: "thick,red", ETE lithology comments: 0. "A thick red mudstone unit" | |
Environment: | "floodplain" |
Geology comments: Trough-shaped cross-bedding and slickensides present in the quarry sediments. ETE sed env 1: ., ETE sed env 2: floodplain ETE event: flood, ETE env comment: flash flood |
Taphonomy
Modes of preservation: | body |
Lagerst�tten type: | concentrate |
Degree of concentration: | -single event |
Size of fossils: | macrofossils,mesofossils |
Preservation of anatomical detail: | good |
Abundance in sediment: | common |
Articulated whole bodies: | none |
Associated major elements: | many |
Disassociated major elements: | many |
Disassociated minor elements: | many |
Size sorting: | poor |
Temporal resolution: | snapshot |
Spatial resolution: | parautochthonous |
Collection methods and comments
Collection excludes: | all microfossils,some macrofossils | ||
Collection methods: | selective quarrying,mechanical,field collection | ||
Reason for describing collection: | taxonomic analysis | ||
Collectors: | S. Chatterjee | Collection dates: | 1977– |
Collection method comments: The quarry is 90 x 90 m in size and the bone bed is 30 cm thick. "...a diverse mixture of massive and delicate elements...found entirely in the mudstone, associated, but disarticulated." ETE Size: .; ETE reference list: 701, 698, 696, 692, 690, 686, 685, 731, 684, 729, 730, 872, 873, 874, 875, 869, 870, 871, 868, 867, 866, 865, 864, 863, 862, 861, 860, 852, 734, 775, 856, 859, ; ETE museum list:
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Taxonomic list comments:"...various unknown microvertebrates were recovered..." |
Metadata
Also known as: | Post Quarry, Dockum Group, ETE Locality 1583, MOTT VPL 3624 | ||
Database number: | 13273 | ||
Authorizer: | J. Alroy, R. Butler, A. Dunhill, M. Carrano | Enterer: | R. Whatley, R. Butler, M. Carrano, B. Allen |
Modifier: | M. Carrano | Research group: | vertebrate |
Created: | 2002-02-12 13:17:12 | Last modified: | 2021-11-15 16:05:20 |
Access level: | the public | Released: | 2002-02-12 13:17:12 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
63730. | Anonymous. 1983. Dinosaur ancestors unearthed in Texas. Science News 124(23):357 [M. Carrano/M. Carrano] |
Secondary references:
76334 | F. L. Agnolin, V. Sarigül, and S. Chatterjee. 2016. A new dinosauriform from the Upper Triassic of Texas and its implications on the origin of the avian-like braincase. XXX Jornadas Argentinas de Paleontología de Vertebrados. Resúmenes. Ameghiniana 53(6 (suppl.)):59 [M. Carrano/M. Carrano/M. Carrano] | |
29593 | J. R. Bolt and S. Chatterjee. 2000. A new temnospondyl amphibian from the Late Triassic of Texas. Journal of Paleontology 74(4):670-683 [R. Butler/R. Butler] | |
29595 | S. Chatterjee. 1983. An ictidosaur fossil from North America. Science 220:1151-1153 [R. Butler/R. Butler] | |
29594 | S. Chatterjee. 1984. A new ornithischian dinosaur from the Triassic of North America. Naturwissenschaften 71:630-631 [R. Butler/R. Butler] | |
4400 | 5% 26680 | S. Chatterjee. 1985. Postosuchus, a new thecodontian reptile from the Triassic of Texas and the origin of tyrannosaurs. Philosophical Transactions of the Royal Society of London, Series B: Biological Sciences 309(1139):395-460 [J. Alroy/R. Whatley/W. Gearty] |
36775 | ETE | S. Chatterjee. 1991. Cranial anatomy and relationships of a new Triassic bird from Texas. Philosophical Transactions of the Royal Society of London B 332:277-342 [M. Carrano/M. Carrano] |
19328 | ETE | S. Chatterjee. 1993. Shuvosaurus, a new theropod: an unusual theropod dinosaur from the Triassic of Texas. National Geographic Research and Exploration 9(3):274-285 [M. Carrano/M. Carrano/M. Carrano] |
29596 | S. Chatterjee. 1995. The Triassic bird Protoavis. Archaeopteryx 13:15-31 [R. Butler/R. Butler] | |
29603 | B. Davidow-Henry. 1989. Small metoposaurid amphibians from the Triassic of western North America and their significance. In S. G. Lucas and A. P. Hunt (eds.), Dawn of the Age of Dinosaurs in the American Southwest. New Mexico Museum of Natural History, Albuquerque, New Mexico 278-292 [R. Butler/R. Butler/R. Butler] | |
33223 | J. Fröbisch. 2009. Composition and similarity of global anomodont-bearing tetrapod faunas. Earth-Science Reviews 95:119-157 [R. Butler/R. Butler] | |
24941 | ETE | A. B. Heckert and S. G. Lucas. 2006. Micro- and small vertebrate biostratigraphy and biochronology of the Upper Triassic Chinle Group, southwestern USA. In J. D. Harris, S. G. Lucas, J. A. Spielmann, M. G. Lockley, A. R. C. Milner, J. I. Kirkland (eds.), The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:94-104 [M. Carrano/M. Carrano/P. Wagner] |
32304 | R. B. Irmis, W. G. Parker, S. J. Nesbitt and J. Liu. 2007. Early ornithischian dinosaurs: the Triassic record. Historical Biology 19(1):3-22 [R. Butler/R. Butler/M. Carrano] | |
19338 | ETE | T. M. Lehman and S. Chatterjee. 2005. Depositional setting and vertebrate biostratigraphy of the Triassic Dockum Group of Texas. Journal of Earth Systems Science 114(3):325-351 [M. Carrano/M. Carrano] |
14122 | ETE | R. A. Long and P. A. Murry. 1995. Late Triassic (Carnian and Norian) Tetrapods from the Southwestern United States. New Mexico Museum of Natural History and Science Bulletin 4:1-254 [M. Carrano/M. Carrano/P. Wagner] |
29602 | J. W. Martz. 2008. Lithostratigraphy, chemostratigraphy, and vertebrate biostratigraphy of the Dockum Group (Upper Triassic), of southern Garza County, West Texas. Unpublished PhD thesis, Texas Tech University. 1-504 [R. Butler/R. Butler/R. Butler] | |
78487 | J. W. Martz, B. Mueller, S. J. Nesbitt, M. R. Stocker, W. G. Parker, M. Atanassov, N. C. Fraser, J. Weinbaum, and J. R. Lehane. 2013. A taxonomic and biostratigraphic re-evaluation of the Post Quarry vertebrate assemblage from the Cooper Canyon Formation (Dockum Group, Upper Triassic) of southern Garza County, western Texas. Earth and Environmental Science Transactions of the Royal Society of Edinburgh 103:339-364 [M. Carrano/M. Carrano] | |
70805 | J. W. Martz and B. J. Small. 2019. Non-dinosaurian dinosauromorphs from the Chinle Formation (Upper Triassic) of the Eagle Basin, northern Colorado: Dromomeron romeri (Lagerpetidae) and a new taxon, Kwanasaurus williamparkeri (Silesauridae). PeerJ 7:e7551:1-71 [M. Carrano/M. Carrano/M. Carrano] | |
29613 | B. D. Mueller and W. G. Parker. 2006. A new species of Trilophosaurus (Diapsida: Archosauromorpha) from the Sonsela Member (Chinle Formation) of Petrified Forest National Park, Arizona. In W. G. Parker, S. R. Ash & R. B. Irmis (eds.), A Century of Research at Petrified Forest National Park, 1906-2006: Geology and Paleontology. Museum of Northern Arizona Bulletin 62:119-125 [R. Butler/R. Butler/R. Butler] | |
78626 | P. A. Murry. 1987. Notes on the stratigraphy and paleontology of the Upper Triassic Dockum Group. Journal of the Arizona-Nevada Academy of Science 22:7-84 [M. Carrano/M. Carrano] | |
58720 | P. A. Murry and R. A. Long. 1997. Dockum Group. In P. J. Currie & K. Padian (ed.), Encyclopedia of Dinosaurs 191-193 [M. Carrano/M. Carrano] | |
29586 | S. J. Nesbitt and S. Chatterjee. 2008. Late Triassic dinosauriforms from the Post Quarry and surrounding areas, west Texas, USA. Neues Jahrbuch für Geologie und Paläontologie Abhandlungen 249(2):143-156 [R. Butler/R. Butler] | |
24249 | ETE | S. J. Nesbitt, R. B. Irmis, and W. G. Parker. 2007. A critical re-evaluation of the Late Triassic dinosaur taxa of North America. Journal of Systematic Palaeontology 5(2):209-243 [M. Carrano/M. Carrano] |
16667 | ETE | W. G. Parker. 2005. A new species of the Late Triassic aetosaur Desmatosuchus (Archosauria: Pseudosuchia). Comptes Rendus Palevol 4:327-340 [M. Carrano/M. Carrano] |
28035 | S. Renesto. 2000. Bird-like head on a chameleon body: new specimens of the enigmatic diapsid reptile Megalancosaurus from the Late Triassic of Northern Italy. Rivista Italiana di Paleontologia e Stratigrafia 106:157-180 [R. Butler/R. Butler] | |
66756 | V. Sarıgül. 2016. New basal dinosauromorph records from the Dockum Group of Texas, USA. Palaeontologia Electronica 19(2):21A [A. Dunhill/B. Allen] | |
67237 | V. Sarigul, F. Agnolin, and S. Chatterjee. 2018. Description of a multitaxic bone assemblage from the Upper Triassic Post Quarry of Texas (Dockum Group), including a new small basal dinosauriform taxon. Historia Natural 8(1):5-24 [G. Lloyd/G. Lloyd] | |
5937 | ETE 1718 | B. Small. 1989. Post Quarry. In S. G. Lucas and A. P. Hunt (eds.), Dawn of the Age of Dinosaurs in the American Southwest, New Mexico Museum of Natural History, Albuquerque 145-148 [A. Behrensmeyer/A. Behrensmeyer/M. Carrano] |
12954 | ETE | B. J. Small. 1989. Aetosaurs from the Upper Triassic Dockum Formation, Post Quarry, west Texas. In S. G. Lucas and A. P. Hunt (eds.), Dawn of the Age of Dinosaurs in the American Southwest, New Mexico Museum of Natural History, Albuquerque 301-308 [M. Carrano/M. Carrano/M. Carrano] |
29597 | B. J. Small. 2002. Cranial anatomy of Desmatosuchus haplocerus (Reptilia: Archosauria: Stagonolepidae). Zoological Journal of the Linnean Society 136:97-111 [R. Butler/R. Butler] | |
35610 | J. C. Weinbaum. 2011. The skull of Postosuchus kirkpatricki (Archosauria: Paracrocodyliformes) from the Upper Triassic of the United States. PaleoBios 30(1):18-44 [R. Butler/R. Butler] |