De Cordova Bend Dam: Early Albian, Texas
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Echinoidea
- Pseudodiadematidae
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Loriolia rosana
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Actinopteri
- Pycnodontiformes
- Pycnodontidae
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Callodus coronatus
Thurmond 1974
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1 specimen | |||||||||
| SMU 72888 | ||||||||||
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Macromesodon dumblei
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2 specimens | |||||||||
| SMU 72837, 72838 | ||||||||||
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? Macromesodon dumblei
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1 specimen | |||||||||
| SMU 72884 | ||||||||||
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Nonaphalagodus trinitiensis
Thurmond 1974
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1 specimen | |||||||||
| SMU 72835 | ||||||||||
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Palaeobalistum sp.
Blainville 1818
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1 specimen | |||||||||
| SMU 72863 | ||||||||||
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Actinopteri
- Pycnodontiformes
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Paramicrodon estesi
Thurmond 1974
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1 specimen | |||||||||
| SMU 72836 | ||||||||||
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Actinopteri
- Anguilliformes
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Casierius heckelii
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10 specimens | |||||||||
| SMU 72839-72841, 72878-72883, 72858 | ||||||||||
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Actinopteri
- Lepisosteiformes
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Lepidotes sp.
Agassiz 1832
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1 specimen | |||||||||
| SMU 72870 | ||||||||||
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? Lepidotes sp.
Agassiz 1832
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1 specimen | |||||||||
| SMU 72898 | ||||||||||
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Actinopteri
- Amiiformes
- Amiidae
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Amiidae indet.
Huxley 1861
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3 specimens | |||||||||
| SMU 72851, 72875-72876 | ||||||||||
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? Amiidae indet.
Huxley 1861
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4 specimens | |||||||||
| SMU 72857, 72866, 72871, 72893 | ||||||||||
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Reptilia
- Testudines
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? Eucryptodira indet.
Gaffney 1975
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11 specimens | |||||||||
| SMU 72842-72850, 72885-72886 | ||||||||||
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Reptilia
- Testudines
- Sandownidae
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Eucryptodira indet.
Gaffney 1975
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1 specimen | |||||||||
| SMU 72852 | ||||||||||
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= Leyvachelys cipadi
Cadena 2015
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Cadena 2015 | |||||||||
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unclassified
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Carycorbula martinae
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Chondrichthyes
- Lamniformes
- Eoptolamnidae
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Leptostyrax sp.
Williston 1900
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3 specimens | |||||||||
| SMU 72874, 72891-72892 | ||||||||||
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Chondrichthyes
- Rajiformes
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Pseudohypolophus mcnultyi
(Thurmond 1971)
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5 specimens | |||||||||
| SMU 72856, 72865, 72873, 73889-72890 | ||||||||||
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Chondrichthyes
- Rajiformes
- Rhinobatidae
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Rhinobatos sp.
Link 1790
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6 specimens | |||||||||
| SMU 72854, 72864, 72894-72897 | ||||||||||
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Malacostraca
- Decapoda
- Nephropidae
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Homarinae indet.
Huxley 1879
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6 specimens | |||||||||
| SMU 72877, 72899-72903 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Texas | County: | Hood |
| Coordinates: | 32.4° North, 97.7° West (view map) | ||||
| Paleocoordinates: | 38.1° North, 46.2° West (Wright 2013) | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Early Cretaceous |
| Stage: | Albian | 10 m.y. bin: | Cretaceous 4 |
| *Period: | Early/Lower Cretaceous | *Epoch: | Gallic |
| *International age/stage: | Early/Lower Albian | ||
| Key time interval: | Early Albian | ||
| Age range of interval: | 113 - 109.9 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Geological group: | Trinity | Formation: | Glen Rose Limestone | Member: | Upper |
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: from units L, M, N, and O in the local section, which span 1.0, about 0.7, 0.2, and 1.5 m, respectively | |||||
Lithology and environment
| Primary lithology: | marl |
| Secondary lithology: | packstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: four successive beds are "marl... limestone with marl interbeds... dense packstone... [and] marl containing numerous flaggy packstone interbeds" | |
| Environment: | shallow subtidal indet. |
| Geology comments: "shallow, low energy marine environment" | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,mesofossils |
| Articulated whole bodies: | none |
| Associated major elements: | none |
| Disassociated major elements: | some |
| Disassociated minor elements: | many |
Collection methods and comments
| Collection methods: | bulk,surface (float),sieve,field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: "surface collecting and wet-sieving of bulk samples with 10-, 18-, 30-, and 45-mesh screens" | |
Metadata
| Also known as: | SMU no. 246 | ||
| Database number: | 27774 | ||
| Authorizer: | J. Alroy, P. Holroyd, M. Carrano | Enterer: | J. Alroy, M. Carrano, P. Holroyd |
| Modifier: | M. Carrano | Research group: | marine invertebrate,vertebrate |
| Created: | 2003-01-08 13:34:46 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2003-01-08 13:34:46 |
| Creative Commons license: | CC0 | ||
Reference information
Primary reference:
| 736. | A. Barck. 1992. Paleontology of the Glen Rose Formation (lower Cretaceous), Hood County, Texas. The Texas Journal of Science 44(1):3-24 [J. Alroy/M. Sommers/M. Uhen] |
Secondary references:
| 60081 | E. Cadena. 2015. The first South American sandownid turtle from the Lower Cretaceous of Colombia. PeerJ 3:e1431:1-24 [P. Holroyd/P. Holroyd] |