U.S.G.S 19780-PC (Permian of the United States)

Also known as U.S.G.S collection 19780-PC, Yeso Fm., New Mexico

Where: Dona Ana County, New Mexico (33.0° N, 106.6° W: paleocoordinates 4.8° N, 34.4° W)

When: Yeso Formation, Kungurian (279.3 - 272.3 Ma)

• Due to faulting and poor exposure, the thickness of the Yeso Fm. can not be measured. But, one exposure has been measured to 250 ft. thick. The Abo-Yeso contact is gradational.

• formation-level stratigraphic resolution

Environment/lithology: marine; gypsiferous, gray, yellow, carbonaceous limestone and fine-grained sandstone

• The Yeso fm. includes gypsum, dolomite, limestone, shale, siltstone, and fine-grained sandstone. The gypsum and carbonates are gray and the shale, siltstone, and sandstone range for yellowish gray to salmon red. The dominant bed type is limestone and gypsum with thin beds of fine-grained sandstone.

Size class: macrofossils

Collection methods: bulk,

• fossils collected from limestone beds in the NE(1/4)sec. 3, T 19 S., R. 3 E.

Primary reference: G. O. Bachman and D. A. Meyers. 1969. Geology of the Bear Park Area, Dona Ana County, New Mexico. United States Geological Survey Bulletin 1271(C):C1-C46 [T. Olszewski/T. Olszewski/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 10139: authorized by Tom Olszewski, entered by Melissa Gibson on 17.02.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

• Also collected were fenestrate bryozoan fragment, echinoid spines, scaphopod genus indet., parallelodont pelecypod, pecttenoid fragments indet., Bellerophontacean gastropod fragments indet., neritacean gastropod - new genus, New genus allied to Orthonema, high-spired gastropod aff. Orthonema, rodlike holes etched into shells.
Show authors, comments, and common names
Bivalvia
 Nuculida - Nuculidae
"Nucula" sp.
"Nucula" sp. Lamarck 1799 nut clam
Cephalopoda
 Pseudorthocerida - Pseudorthoceratidae
Pseudorthoceras indet.
Gastropoda
 Cerithimorpha - Orthonemidae
"Paleostylus indet." = Palaeostylus, Cibecuia indet.
"Paleostylus indet." = Palaeostylus Mansuy 1914 snail
Cibecuia indet. Winters 1956 snail
This is possible Othonema socorroense Girty
 Caenogastropoda - Goniasmatidae
Goniasma indet., Stegocoelia indet.
Goniasma indet. Tomlin 1930 snail
Stegocoelia indet. Donald 1889 snail
 Bellerophontida - Bellerophontidae
Knightites indet.
Knightites indet. Moore 1941 snail
 Bellerophontida - Euphemitidae
Euphemites indet.
Euphemites indet. Warthin 1930 snail
 Euomphalina - Euomphalidae
Amphiscapha indet., "Straparollus kaibabensis" = Euomphalus kaibabensis
Amphiscapha indet. Knight 1942 snail
"Straparollus kaibabensis" = Euomphalus kaibabensis Chronic 1952 snail
 Murchisoniina - Lophospiridae
"Worthenia arizonica" = Biarmeaspira arizonensis
"Worthenia arizonica" = Biarmeaspira arizonensis Winters 1963 snail
 Murchisoniina - Soleniscidae
Cylindritopsis indet., Soleniscus indet.
Cylindritopsis indet. Gemmellaro 1889 snail
Soleniscus indet. Meek and Worthen 1860 snail