Where: Medina County, Texas (29.3° N, 99.1° W: paleocoordinates 34.9° N, 72.5° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Baculites maclearni ammonoid zone, Anacacho Limestone Formation, Middle Campanian (83.5 - 70.6 Ma)
• Swezey and Sullivan (2004) correlate this bed to the Baculites maclearni zone., which is middle Campanian in Gradstein et al., 2004.
• bed-level stratigraphic resolution
Environment/lithology: marine; carbonate
Size class: mesofossils
Reposited in the USGS
Primary reference: W. P. Elder. 1996. Bivalves and Gastropods from the Middle Campanian Anacacho Limestone, south central Texas. Journal of Paleontology 70(2):247-271 [M. Patzkowsky/K. Layou/J. Alroy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 3608: authorized by Mark Patzkowsky, entered by Karen Layou on 05.08.1999
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Cephalopoda | |
| |
Baculites taylorensis Adkins 1929 ammonite | |
Eubostrychoceras reevesi ammonite | |
Gastropoda | |
| |
Bivalvia | |
| |
Cucullaea sp. Lamarck 1801 clam | |
| |
Inoceramus balticus Bohm 1907 clam | |
Limea reticulata file clam | |
Spondylus sp. Linnaeus 1758 scallop | |
Neithea quinquecostata Sowerby 1814 scallop | |
Pycnodonte mutabilis oyster | |
| |
Pterotrigonia sp. van Hoepen 1929 clam | |
Protocardia spillmani cockle |