TMM 42536, Rattlesnake Mountain: Early/Lower Campanian, Texas

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Hadrosauridae
Hadrosauridae indet. (Cope 1869)
Lehman et al. 2019 1 specimen
unnamed new genus and species; tooth, TMM 42536-15
Reptilia - Ornithomimidae
Ornithomimidae indet. Marsh 1890
Lehman et al. 2019 1 individual
unnamed new genus and species; Associated right metatarsus including MT II and IV, distal half of MT III, pedal phalanx III-2, left ilium, right ischium, and distal shaft of femur, TMM 42536-9
Reptilia - Tyrannosauridae
Tyrannosauridae indet. Osborn 1906
Lehman et al. 2019 1 specimen
tooth, TMM 42536-14
Reptilia
Goniopholis cf. kirtlandicus Wiman 1932
1 individual
TMM 42536-2 (partial skull and skeleton) - unnamed new genus and species
    = Goniopholididae indet. Cope 1875
Lehman et al. 2019
    = Paluxysuchidae indet. Drumheller et al. 2021
Drumheller et al. 2021
Reptilia - Baenidae
cf. Denazinemys sp. Lucas and Sullivan 2006
Lehman et al. 2019 2 individuals
Partial carapace and plastron, TMM 42536-1; associated parts of ju- venile carapace, including right first through third costal and peripheral, TMM 42536-7
Actinopteri - Amiiformes - Amiidae
Melvius sp. Bryant 1987
Lehman et al. 2019 2 individuals
A series of four associated posterior abdominal vertebral centra, TMM 42536-11; isolated trunk and caudal vertebral centra, TMM 42536-12
Chondrichthyes - Hybodontiformes - Hybodontidae
Hybodontidae indet. (Agassiz 1834)
Lehman et al. 2019 1 specimen
Fragment of a dorsal fin spine, TMM 42536-10
see common names

Geography
Country:United States State/province:Texas County:Brewster
Coordinates: 29.2° North, 103.6° West (view map)
Paleocoordinates:35.8° North, 77.1° West
Basis of coordinate:estimated from map
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Campanian 10 m.y. bin:Cretaceous 7
Key time interval:Early/Lower Campanian
Age range of interval:83.60000 - 72.10000 m.y. ago
Stratigraphy
Formation:Aguja Member:Lower Shale
Stratigraphic resolution:bed
Stratigraphy comments: approximately 43 meters from base of formation in local section
Lithology and environment
Primary lithology:coarse mudstone
Lithology description: illustrated as being in carbonaceous mudstone unit in figure 3
Environment:coastal indet.
Geology comments: "coastal marsh facies"
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:general faunal/floral analysis
Metadata
Database number:200394
Authorizer:P. Holroyd, M. Carrano, P. Mannion Enterer:P. Holroyd, M. Carrano, P. Mannion
Modifier:M. Carrano Research group:vertebrate
Created:2019-04-02 11:09:53 Last modified:2023-08-04 13:53:13
Access level:the public Released:2019-04-02 11:09:53
Creative Commons license:CC BY
Reference information

Primary reference:
85562. T. M. Lehman. 1985. Stratigraphy, Sedimentology, and Paleontology of Upper Cretaceous (Campanian–Maastrichtian) Sedimentary Rocks in Trans-Pecos Texas xiv-299 [M. Carrano/M. Carrano]

Secondary references:

76727 S. K. Drumheller, T. L. Adams, H. Maddox and C. R. Noto. 2021. Expanded Sampling Across Ontogeny in Deltasuchus motherali (Neosuchia, Crocodyliformes). Elements of Paleontology 1-76 [P. Mannion/P. Mannion/P. Mannion]
68399 T. M. Lehman, S. L. Wick, A. B. Brink and T. A. Shiller, II. 2019. Stratigraphy and vertebrate fauna of the lower shale member of the Aguja Formation (lower Campanian) in West Texas. Cretaceous Research 99:291-314 [P. Holroyd/P. Holroyd]