Aprox. 67- 66 Million Years Ago
Ammonite Baculites columna
Nautiloid Eutrophoceras planoventer
Crab Dakoticancer australis
Crab Dakoticancer australis
Echinoid Codiopsis stephensoni
Echinoid Diplodetus (Plesiaster) americanus
Echinoid Hemiaster bexari
Gastropod Graphidula lymnensis
Gastropod Drepanochilus evansi
Gastropod Gyrodes rotundus
Gastropod Turritella vertebroides
Gastropod Anomalofusus substriatus
Gastropod Tornatellaea af grandi
Gastropod Pseudomalaxis patens
Gastropod Striatocostatum bexarense
Brachiopod Waconella (Kingena) wacoensis
Bivalve Lima acutilineata
Bivalve Trigonia castrovillensis
Bivalve Plicatulla mullicaensis
Bivalve Neithea bexarensis
Bivalve Caestocorbula crassiplica
Bivalve Tellina marcosensis
Bivalve Neithea bexarensis
Bivalve Anomia argentaria
Oyster Illymatogyra arietina
Bivalve Plicatula mullicaensis
Oyster Pycnodonte mutabilis
Bryozoan Dysnoetopara celleporoides
Worm Pyrgopolon squamosus
Foraminifera Dentalina mutablis
Foraminifera Anomalina sp.