Stone Ranch (Cretaceous of the United States)

Also known as USGS Mesozoic locality D10936

Where: Hudspeth County, Texas (31.1° N, 105.2° W: paleocoordinates 33.4° N, 72.9° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Pseudaspidoceras flexuosum zone, Chispa Summit Formation, Early/Lower Turonian (93.5 - 89.3 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; concretionary, gray limestone

• no paleoenvironmental data
• gray concretionary limestone

Reposited in the USGS

Primary reference: W. J. Kennedy and W. A. Cobban. 1990. Rhamphidoceras saxatilis n. gen. and sp., a micromorph ammonite from the lower Turonian of Trans-Pecos Texas. Journal of Paleontology 64(4):666-668 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 4898: authorized by John Alroy, entered by John Alroy on 29.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Anisoceratidae
Allocrioceras larvatum
Allocrioceras larvatum Conrad 1855 ammonite
 Ammonitida - Vascoceratidae
Vascoceras proprium, Fagesia catinus
Vascoceras proprium Reyment 1954 ammonite
Fagesia catinus Mantell 1822 ammonite
 Ammonitida - Pseudotissotiidae
Thomasites adkinsi
Thomasites adkinsi Kummel and Decker 1954 ammonite
 Ammonitida - Pseudotissotidae
Wrightoceras munieri
Wrightoceras munieri Pervinquiére 1907 ammonite
 Ammonitida - Acanthoceratidae
Quitmaniceras reaseri, Rhamphidoceras saxatilis n. gen. n. sp., Mammites powelli, Kamerunoceras calvertense
Quitmaniceras reaseri Powell 1963 ammonite
Rhamphidoceras saxatilis n. gen. n. sp. Kennedy and Cobban 1990 ammonite
Mammites powelli Kennedy et al. 1987 ammonite
Kamerunoceras calvertense Powell 1963 ammonite
Bivalvia
 Myalinida - Inoceramidae
Mytiloides columbianus