Hogback South, MNA Locality C (Cretaceous of the United States)

Also known as #93

Where: San Juan County, New Mexico (36.5° N, 108.5° W: paleocoordinates 43.8° N, 79.8° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Fruitland Formation, Late/Upper Campanian (83.5 - 70.6 Ma)

• within the upper 15.2 m of the Fruitland

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; silty shale and lenticular, calcareous sandstone

Size classes: macrofossils, mesofossils

Collection methods: bulk, chemical, sieve,

• 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.

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 36542: authorized by John Alroy, entered by Erin Leckey on 03.02.2004, edited by John Alroy

Creative Commons license: CC BY (attribution)

Taxonomic list

Pancrustacea
  -
Insecta indet.2 Linnaeus 1758 insect
insect burrows
Malacostraca
 Decapoda -
Decapoda indet.2 Latreille 1802 decapod
"crab claws"
Bivalvia
 Pholadida - Pholadidae
Chondrichthyes
 Hybodontiformes - Lonchidiidae
Lonchidion selachos Estes 1964 elasmobranch
 Myliobatiformes - Dasyatidae
Myledaphus bipartitus Cope 1876 whiptail stingray
 Orectolobiformes - Orectolobidae
Squatirhina sp. Casier 1947 wobbegong
Actinopteri
 Elopiformes - Phyllodontidae
Paralbula casei Estes 1969
 Amiiformes - Amiidae
Amia fragosa Jordan 1927 bowfin
 Lepisosteiformes - Lepisosteidae
Reptilia
 Testudines - Adocidae
Adocus sp. Cope 1868 turtle
isolated carapace and plastron fragments
 Loricata -
Crocodylia indet.1 crocodilian
isolated teeth
 Crocodylia - Alligatoridae
Brachychampsa sp. Gilmore 1911 crocodilian
isolated teeth
Mammalia
 Didelphimorphia - Alphadontidae
Alphadon cf. marshi Simpson 1927 marsupial