USGS Mesozoic D10104, Rattlesnake Ridge (Cretaceous of the United States)

Where: New Mexico (32.5° N, 107.7° W: paleocoordinates 33.2° N, 72.1° W)

• coordinate stated in text

When: Mantelliceras dixoni ammonoid zone, Sarten Member (Mojado Formation), Early/Lower Cenomanian (99.6 - 93.5 Ma)

• uppermost meter of the Sarten Sandstone

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, nodular, sandy limestone

Size class: macrofossils

Preservation: mold/impression

Collected by E. R. Landis, S. C. Hook, and W. A. Cobban; J. R. Wright, D. E. Tabet, S. C. Hook, and W. A. Cobban; R. R. Cobban, S. C. Hook, and W. A. Cobban in 1976, 1977, 1980; reposited in the USNM

Primary reference: W. A. Cobban. 1987. Ammonite Faunas of the Sarten Sandstone (Cretaceous), Luna County, New Mexico. United States Geological Survey Bulletin (1641-B) [M. Clapham/K. Okamoto]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 179775: authorized by Matthew Clapham, entered by Kristina Okamoto on 30.06.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Cephalopoda
 Ammonitida - Turrilitidae
aff. Turrilites costatus Lamarck 1801 ammonite
 Ammonitida - Acanthoceratidae
Mantelliceras sp. Hyatt 1903 ammonite
 Nautilida - Nautilidae
Cymatoceras sp. Hyatt 1884 nautiloid
Bivalvia
 Pectinida - Neitheoidae
Neithea texana Roemer 1852 scallop
 Pectinida - Entoliidae
Syncyclonema sp. Meek 1864 scallop
 Pectinida - Limidae
Lima shumardi file clam
 Ostreida - Gryphaeidae
Exogyra clarki Shattuck 1903 oyster
 Carditida - Crassatellidae
Stearnsia sp. White 1887 clam
 Pholadomyida - Pholadomyidae
cf. Homomya budaensis Whitney 1911 clam
 Cardiida - Cardiidae
Protocardia ? sp. Beyrich 1845 cockle
"Granocardium budaense" = Granocardium (Criocardium) budaense Shattuck 1903 cockle
 Trigoniida - Megatrigonioidae
Pterotrigonia sp. van Hoepen 1929 clam
Gastropoda
 Sorbeoconcha - Tylostomatidae
 Cerithioidea - Turritellidae
Turritella sp. Lamarck 1799 turret shell