Windy City, Rattlesnake Mountain, Big Bend (Cretaceous of the United States)

Also known as LSUMG 842, VL-842, TMM 43098

Where: Brewster County, Texas (29.2° N, 103.6° W: paleocoordinates 35.7° N, 77.1° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Upper Shale Member (Aguja Formation), Late/Upper Campanian (83.5 - 70.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: crevasse splay; lithified, paleosol/pedogenic, fine, nodular, green, muddy sandstone and silty mudstone

• "a crevasse splay into a marshy area of a coastal floodplain"
• "silty mudstone to fine sandstone"; very fine to fine grained muddy sandstone, light olive gray, poorly sorted, moderately well indurated; abundant clay balls, pedogenic carbonate nodules

Size classes: macrofossils, mesofossils, microfossils

Collected by P. C. Sereno, C. A. Forster, J. T. Sankey in 1989-1991, 2000-2007

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

Primary reference: C. A. Forster, P. C. Sereno, T. W. Evans and T. Rowe. 1993. A complete skull of Chasmosaurus mariscalensis (Dinosauria, Ceratopsidae) from the Aguja Formation (late Campanian) of west Texas. Journal of Vertebrate Paleontology 13(2):161-170 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 25073: authorized by Matthew Carrano, entered by Matthew Carrano on 27.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
  -
Gastropoda indet.1 Cuvier 1797 snail
"snails"
Osteichthyes
 Caudata -
Caudata indet.1 salamander
"salamander"
Reptilia
 Testudines - Trionychidae
Trionychidae indet.1 Gray 1825 softshell turtle
 Testudines - Baenidae
Baenidae indet.1 Cope 1882 turtle
 Testudines - Nanhsiungchelyidae
Basilemys sp.1 Hay 1902 turtle
 Testudines - Adocidae
Adocus sp.1 Cope 1868 turtle
 Testudines - Kinosternoidea
cf. Hoplochelys sp.1 Hay 1908 mud turtle
 Testudines - Pantrionychidae
cf. Helopanoplia sp.1 Hay 1908 turtle
 Dinosauria -
Dinosauria indet.1 dinosaur
4 additional types of eggshell
 Theropoda -
 Avetheropoda - Dromaeosauridae
cf. Saurornitholestes sp.1 Sues 1978 coelurosaur
Aves
  -
Aves indet.1 Linnaeus 1758 bird
"birds"
Reptilia
 Avetheropoda - Tyrannosauridae
Tyrannosauridae indet.1 Osborn 1906 tyrannosaurid
LSUMG 842:17876
 Avetheropoda - Ornithomimidae
Ornithomimidae indet.1 Marsh 1890 ornithomimid
 Saurischia - Elongatoolithidae
Porituberoolithus sp.2 Zelenitsky et al. 1996 theropod
Continuoolithus sp.2 Zelenitsky et al. 1996 theropod
 Ornithischia -
Ankylosauria indet.1 ornithischian
 Neornithischia -
Ceratopsia indet.1 ornithischian
 Neornithischia - Ceratopsidae
"Chasmosaurus mariscalensis" = Agujaceratops mariscalensis
"Chasmosaurus mariscalensis" = Agujaceratops mariscalensis Lehman 1989 Aguja horned face
TMM 43098-1
 Neornithischia - Hadrosauridae
Hadrosauridae indet. Cope 1869 hadrosaurid
LSUMG 842:8397
 Pterosauria -
 Loricata -
Crocodylia indet.1 crocodilian
 Squamata -
Lacertilia indet.1 lizard
"lizard"
Mammalia
  -
Mammalia indet.1 Linnaeus 1758 mammal
"mammal"
unclassified
  -
Plantae indet.1 Haeckel 1866
"plants"