TMM 41361, Tornillo Flat, Big Bend NP: Late/Upper Maastrichtian, Texas
collected by W. Langston Jr. 1970
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Actinopteri
- Lepisosteiformes
- Lepisosteidae
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Lepisosteidae indet.
Cuvier 1825
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Hunt and Lehman 2008 | |||||||||
| "gar scales" | ||||||||||
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Reptilia
- Ceratopsidae
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cf. Pentaceratops sp.
Osborn 1923
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3 individuals | |||||||||
| "resembles Pentaceratops"; MNI; 37 elements: TMM 41361-1 to -37; 1 juvenile and 2 adults (5 measurements) | ||||||||||
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= Torosaurus cf. utahensis
Gilmore 1946
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Hunt and Lehman 2008 | |||||||||
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Reptilia
- Testudines
- Trionychidae
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Trionychidae indet.
Gray 1825
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Hunt and Lehman 2008 | 1 individual | ||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Texas | County: | Brewster |
| Coordinates: | 29.4° North, 103.2° West (view map) | ||||
| Paleocoordinates: | 36.0° North, 82.5° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Maastrichtian | 10 m.y. bin: | Cretaceous 8 |
| Key time interval: | Late/Upper Maastrichtian | ||
| Age range of interval: | 72.10000 - 66.00000 m.y. ago |
Stratigraphy
| Geological group: | Tornillo | Formation: | Javelina | ||
| Local section: | Tornillo Flat | Local bed: | 60 m | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: "lower third of the Tornillo Group" | |||||
Lithology and environment
| Primary lithology: | sandstone |
| Secondary lithology: | lenticular,concretionary,green mudstone |
| Includes fossils? | Y |
| Lithology description: "a lens of dark olive-colored mudstone of limited lateral extent...The high organic matter content, ferroan calcite nodules, and similar coatings that occur on the bones..." | |
| Environment: | fine channel fill |
| Geology comments: "uppermost part of a stream channel bar deposit...water-saturated reducing conditions existed at the site...probably represents an abandoned channel deposit that formed after a reach of stream channel was cut off from active flow." | |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | -bonebed |
| Size of fossils: | macrofossils |
| Spatial orientation: | preferred |
| Preservation of anatomical detail: | medium |
| Associated major elements: | many |
| Disassociated major elements: | some |
| Size sorting: | well |
| Fragmentation: | occasional |
| Temporal resolution: | snapshot |
Collection methods and comments
| Collection methods: | field collection | ||
| Rock censused: | 10000 cm2 (area) | ||
| Reason for describing collection: | general faunal/floral analysis | ||
| Museum repositories: | TMM | ||
| Collectors: | W. Langston Jr. | Collection dates: | 1970 |
Metadata
| Database number: | 85188 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2008-12-05 14:22:41 | Last modified: | 2023-08-04 14:10:13 |
| Access level: | the public | Released: | 2008-12-05 14:22:41 |
| 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:
| 28672 | ETE | R. K. Hunt and T. M. Lehman. 2008. Attributes of the ceratopsian dinosaur Torosaurus, and new material from the Javelina Formation (Maastrichtian) of Texas. Journal of Paleontology 82(6):1127-1138 [M. Carrano/M. Carrano] |