Hogback South, MNA Locality C: Late Campanian, New Mexico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Pholadida
- Pholadidae
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| Armstrong-Ziegler 1980 | ||||||||||
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Malacostraca
- Decapoda
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| Armstrong-Ziegler 1980 | ||||||||||
| "crab claws" | ||||||||||
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Insecta
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| Armstrong-Ziegler 1980 | ||||||||||
| insect burrows | ||||||||||
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Chondrichthyes
- Hybodontiformes
- Lonchidiidae
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Chondrichthyes
- Rajiformes
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Squatirhina sp.
Casier 1947
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Chondrichthyes
- Rajiformes
- Rhinobatidae
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Actinopteri
- Elopiformes
- Phyllodontidae
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Actinopteri
- Amiiformes
- Amiidae
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Amia fragosa
Jordan 1927
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Actinopteri
- Lepisosteiformes
- Lepisosteidae
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Reptilia
- Testudines
- Adocidae
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| isolated carapace and plastron fragments | ||||||||||
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Reptilia
- Crocodylia
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| isolated teeth | ||||||||||
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= Crocodylia indet.
Owen 1842
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Alroy 2007 | |||||||||
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Reptilia
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| isolated teeth | ||||||||||
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Mammalia
- Alphadontidae
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | New Mexico | County: | San Juan |
| Coordinates: | 36.5° North, 108.5° West (view map) | ||||
| Paleocoordinates: | 46.9° North, 71.4° West (Wright 2013) | ||||
| Basis of coordinate: | stated in text | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late Cretaceous |
| Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
| Key time interval: | Late Campanian | ||
| Age range of interval: | 83.6 - 72.2 m.y. ago |
Stratigraphy
| Formation: | Fruitland | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: within the upper 15.2 m of the Fruitland | |||||
Lithology and environment
| Primary lithology: | silty "shale" |
| Secondary lithology: | lenticular calcareous sandstone |
| Includes fossils? | Y |
| Environment: | terrestrial indet. |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | concentrated |
| Size of fossils: | macrofossils,mesofossils |
| Disassociated major elements: | many |
| Disassociated minor elements: | many |
Collection methods and comments
| Collection excludes: | some microfossils | ||
| Collection methods: | bulk,chemical,sieve,field collection | ||
| Minimum sieve size: | 1.000 | Maximum sieve size: | 1.600 |
| Reason for describing collection: | taxonomic analysis | ||
| Collection method comments: MNA locality #93, used tandem screen boxes, with 1/16 inch mesh size and 1/25 inch mesh. Some samples were disaggregated using Amine 220 and Methyl Amyl Alcohol. | |||
Metadata
| Also known as: | #93 | ||
| Database number: | 36542 | ||
| Authorizer: | J. Alroy | Enterer: | E. Leckey, J. Alroy |
| Modifier: | M. Carrano | Research group: | marine invertebrate,vertebrate |
| Subset of collection #: | 36449 | ||
| Created: | 2004-02-03 09:30:31 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2004-02-03 09:30:31 |
| Creative Commons license: | CC0 | ||
Reference information
Primary reference:
| 9765. | J. G. Armstrong-Ziegler. 1978. An aniliid snake and associated vertebrates from the Campanian of New Mexico. Journal of Paleontology 52(2):480-483 [J. Alroy/E. Leckey/E. Leckey] |
Secondary references:
| 19636 | J. Alroy. 2007. Synonymies and reidentifications of North American fossil vertebrates and so forth. [J. Alroy/J. Alroy] | |
| 9776 | J. G. Armstrong-Ziegler. 1980. Amphibia and Reptilia from the Campanian of New Mexico. Fieldiana 4:1-39 [J. Alroy/E. Leckey/E. Leckey] |