Sevilleta Grant, near La Joya (Cretaceous of the United States)

Where: Socorro County, New Mexico (34.3° N, 106.7° W: paleocoordinates 36.5° N, 72.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Atarque Sandstone Member (Tres Hermanos Formation), Turonian (93.9 - 89.8 Ma)

• from the middle part of the Atarque Sandstone Mbr.

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lenticular, fine-grained, yellow, calcareous sandstone and shale

• "a series of fossil-rich lenses in sandstones...The middle Atarque consists of yellow-orange, fine-grained, thinly bedded, calcareous sandstone with shale partings"

Size classes: macrofossils, mesofossils

Collected by B. Baker in 1981

Collection methods: bulk, chemical, acetic, sieve,

• in collection of the New Mexico Bureau of Mines & Mineral Resources (NMBMMR)

Primary reference: D. L. Wolberg. 1985. Selachians from the Late Cretaceous (Turonian) Atarque Sandstone Member, Tres Hermanos Formation, Sevilleta Grant, Socorro County, New Mexico. New Mexico Geology 7(1):1-7 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 179267: authorized by Matthew Carrano, entered by Matthew Carrano on 09.06.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Chondrichthyes
 Hybodontiformes - Hybodontidae
Hybodus sp. Agassiz 1837 elasmobranch
 Hybodontiformes - Ptychodontidae
Ptychodus anonymus Williston 1900 elasmobranch
Ptychodus polygyrus Agassiz 1839 elasmobranch
Ptychodus whipplei Marcou 1858 elasmobranch
 Sclerorhynchiformes - Sclerorhynchidae
Ischyrhiza mira Leidy 1856 elasmobranch
Ischyrhiza avonicola Estes 1964 elasmobranch
 Sclerorhynchiformes - Ptychotrygonidae
Ptychotrygon triangularis Reuss 1845 elasmobranch
 Euselachii -
 Lamniformes - Anacoracidae
Squalicorax falcatus Agassiz 1843 crow shark
 Lamniformes -
Paranomotodon sp. Herman 1975 mackerel shark
 Lamniformes - Cretoxyrhinidae
Plicatolamna arcuata Woodward 1894 mackerel shark
Cretolamna appendiculata Agassiz 1843 mackerel shark
Cretodus semiplicatus Agassiz 1843 mackerel shark
 Lamniformes - Mitsukurinidae
Scapanorhynchus raphiodon Agassiz 1843 goblin shark
Anomotodon sp. Arambourg 1952 goblin shark
 Orectolobiformes - Hemiscylliidae
Reptilia
 Testudines -
Testudines indet. Batsch 1788 turtle
 Dinosauria -
 Loricata -
Crocodylia indet. crocodilian
armor, teeth
 Plesiosauria -
Plesiosauria indet. plesiosaur
teeth