Where: Socorro County, New Mexico (34.4° N, 107.5° W: paleocoordinates 37.1° N, 74.0° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Collignoniceras woollgari ammonoid zone, Atarque Sandstone Member (Tres Hermanos Formation), Middle Turonian (93.5 - 89.3 Ma)
• STRATIGRAPHIC RELATIONS: From the Atarque Sandstone Mbr of the Tres Hermanos Fm, which overlies the Mancos Shale, and is overlain by the Carthage Mbr. AGE: Middle Turonian, on the basis of ammonoid biostratigraphy; Collignoniceras woollgari zone. STRATIGRAPHIC POSITION: From unit 18, near top of section.
• bed-level stratigraphic resolution
Environment/lithology: coastal; lithified, burrowed, gray, yellow, calcareous sandstone
Size class: macrofossils
Collected by Massingill & Hook in 1977; reposited in the USNM
Collection methods: surface (in situ),
• COLLECTOR: Massingill & Hook, 1977. REPOSITORY: USNM.
Primary reference: W. A. Cobban and S. C. Hook. 1980. The Upper Cretaceous (Turonian) ammonite family Coilopoceratidae Hyatt in the Western Interior of the United States. United States Geological Survey Professional Paper 1192:1-28 [W. Kiessling/U. Merkel]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 88811: authorized by Austin Hendy, entered by Austin Hendy on 21.04.2009, edited by Matthew Clapham
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Collignoniceras woollgari Mantell 1822 ammonite | |
Hoplitoides cf. wohltmanni von Koenen 1897 ammonite | |
Placenticeras cumminsi Cragin 1893 ammonite | |
Baculites yokoyamai Tokunga and Shimizu 1926 ammonite | |
Bivalvia | |
Crassostrea soleniscus oyster | |
Phelopteria gastrodes Meek 1873 pearl oyster | |
Inoceramus cuvieri Sowerby 1814 clam | |
Modiolus sp. Lamarck 1801 mussel | |
Aphrodina sp. Conrad 1869 venus clam | |
Cymbophora holmesi clam | |
Pleuriocardia (Dochmocardia) sp. Scott 1978 cockle | |
"Psilomya concentrica" = Liopistha (Psilomya)
"Psilomya concentrica" = Liopistha (Psilomya) clam | |
Laternula lineata clam | |
Gastropoda | |
Gyrodes depressus moon snail
Gyrodes conradi moon snail | |
"Pugnellus (Gymnarus) fusiformis" = Gymnarus
"Pugnellus (Gymnarus) fusiformis" = Gymnarus snail | |
? Tectaplica utahensis volute
Carota dalli volute | |
Pyropsis coloradoensis Stanton 1893 snail |