Hogback South, MNA Locality C: Late/Upper Campanian, New Mexico
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
- Crocodylia
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Leidyosuchus sp.
Lambe 1907
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isolated teeth | ||||||||||
= Crocodylia indet.
Owen 1842
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Alroy 2007 | |||||||||
Reptilia
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Brachychampsa sp.
Gilmore 1911
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isolated teeth | ||||||||||
Reptilia
- Testudines
- Adocidae
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Adocus sp.
Cope 1868
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isolated carapace and plastron fragments | ||||||||||
Mammalia
- Alphadontidae
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Alphadon cf. marshi
Simpson 1927
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Actinopteri
- Elopiformes
- Phyllodontidae
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Paralbula casei
Estes 1969
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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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Lepisosteus occidentalis
(Leidy 1856)
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original and current combination Lepidotus occidentalis | ||||||||||
Chondrichthyes
- Rajiformes
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Squatirhina sp.
Casier 1947
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Chondrichthyes
- Rajiformes
- Rhinobatidae
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Myledaphus bipartitus
Cope 1876
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Chondrichthyes
- Hybodontiformes
- Lonchidiidae
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Lonchidion selachos
Estes 1964
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Bivalvia
- Pholadida
- Pholadidae
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Teredina neomexicana
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Armstrong-Ziegler 1980 | |||||||||
Malacostraca
- Decapoda
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Decapoda indet.
Latreille 1802
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Armstrong-Ziegler 1980 | |||||||||
"crab claws" | ||||||||||
Insecta
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Insecta indet.
Linnaeus 1758
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Armstrong-Ziegler 1980 | |||||||||
insect burrows | ||||||||||
see common names |
Geography
Country: | United States | State/province: | New Mexico | County: | San Juan |
Coordinates: | 36.5° North, 108.5° West (view map) | ||||
Paleocoordinates: | 43.8° North, 79.8° West | ||||
Basis of coordinate: | stated in text | ||||
Geographic resolution: | outcrop |
Time
Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
Key time interval: | Late/Upper Campanian | ||
Age range of interval: | 83.60000 - 72.10000 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: | 2012-03-06 09:40:01 |
Access level: | the public | Released: | 2004-02-03 09:30:31 |
Creative Commons license: | CC BY |
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] |