BUNM 77-25 (Cretaceous of the United States)

Where: San Juan County, New Mexico (36.3° N, 108.3° W: paleocoordinates 43.6° N, 79.6° W)

• coordinate stated in text

• small collection-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: marine; coal

• The locality is about 30m above the base of the Fruitland and approximately 30-40 m below the persistent sandstone body at the top of the Fruitland.

Size class: mesofossils

Collection methods: quarrying, surface (float), mechanical,

Primary reference: P. J. Hutchinson and B. S. Kues. 1985. Depositional environments and paleontology of Lewis Shale to lower Kirtland Shale sequence (Upper Cretaceous), Bisti area, northwestern New Mexico. New Mexico Bureau of Mines & Mineral Resources Circular 195:24-54 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 52052: authorized by Matthew Carrano, entered by Kaitlin Maguire on 15.07.2005, edited by John Alroy and David Nicholson

Creative Commons license: CC BY (attribution)

Taxonomic list

• Reptilian egg-shell fragments found
Malacostraca
 Decapoda -
? Xanthoidea indet. MacLeay 1838 crab
Bivalvia
 Pholadida - Pholadidae
Gymnolaemata
 Cheilostomata - Electridae
? Conopeum sp. Gray 1848
Chondrichthyes
 Sclerorhynchiformes - Ptychotrygonidae
Ptychotrygon aff. triangularis Reuss 1845 cartilaginous fish
 Hybodontiformes - Hybodontidae
Hybodus sp. Agassiz 1837 elasmobranch
 Hybodontiformes - Lonchidiidae
Lonchidion selachos Estes 1964 elasmobranch
? Lonchidion selachos Estes 1964 elasmobranch
 Myliobatiformes - Dasyatidae
Myledaphus bipartitus Cope 1876 whiptail stingray
 Orectolobiformes - Orectolobidae
Squatirhina sp. Casier 1947 wobbegong
Actinopteri
 Elopiformes - Phyllodontidae
cf. Pseudoegertonia sp. Dartevelle and Casier 1949
originally entered as "cf. Pseudoegertonia indet."
Paralbula cf. casei Estes 1969
 Amiiformes - Amiidae
Amia sp. Linnaeus 1766 bowfin
Amia cf. uintaensis Leidy 1873 bowfin
 Lepisosteiformes - Lepisosteidae
Lepisosteus sp. Agassiz 1843 gar
Reptilia
 Testudines - Trionychidae
Trionychidae indet. Gray 1825 softshell turtle
 Testudines - Baenidae
"Baena nodosa" = Denazinemys nodosa Gilmore 1916 turtle
Neurankylus baueri2 Gilmore 1916 turtle
 Testudines - Adocidae
Adocus sp. Cope 1868 turtle
 Avetheropoda - Dromaeosauridae
Dromaeosauridae indet. Colbert and Russell 1969 coelurosaur
 Neornithischia - Thescelosauridae
? Thescelosaurus sp. Gilmore 1913 ornithischian
 Neornithischia - Hadrosauridae
Hadrosauridae indet. Cope 1869 hadrosaurid
 Loricata -
"Crocodilia indet." = Crocodylia, "Crocodylia indet." = Crocodylia1
"Crocodilia indet." = Crocodylia Owen 1842 crocodilian
"Crocodylia indet." = Crocodylia1 Owen 1842 crocodilian
 Crocodylia - Alligatoridae
? Brachychampsa sp. Gilmore 1911 crocodilian
 Squamata - Chamopsiidae
Leptochamops denticulatus Gilmore 1928 lizard
Mammalia
  -
Mammalia indet. Linnaeus 1758 mammal