Large 7/8 Ptychodus Mortoni Fossil Cretaceous Crusher Shark Tooth

Large 7/8 Ptychodus Mortoni Fossil Cretaceous Crusher Shark Tooth Texas

A revision of the Upper Cretaceous shark Ptychodus mediterraneus Canavari, 1916 from northeastern Italy, with a reassessment of P. latissimus and P. polygyrus Agassiz, 1835 (Chondrichthyes; Elasmobranchii) - ScienceDirect

Phylostratigraphy of Ptychodus species in north-western Germany

7 Fossil Crusher Shark (Ptychodus) Tooth Plate - Kansas (#211741) For Sale

Large 7/8 Ptychodus Mortoni Fossil Cretaceous Crusher Shark Tooth Texas

First associated tooth set of a high-cusped Ptychodus (Chondrichthyes, Elasmobranchii) from the Upper Cretaceous of northeastern Italy, and resurrection of Ptychodus altior Agassiz, 1835 - ScienceDirect

Ptychodus mortoni

Rare Protocallianassa mortoni Crab Claw - Cretaceous

Huge, 1.4 Fossil Crusher Shark (Ptychodus) Tooth - Kansas (#152255) For Sale

Texas fossil shark teeth for sale

A revision of the Upper Cretaceous shark Ptychodus mediterraneus Canavari, 1916 from northeastern Italy, with a reassessment of P. latissimus and P. polygyrus Agassiz, 1835 (Chondrichthyes; Elasmobranchii) - ScienceDirect

What prehistoric creature evolved into sharks as we know them today? - Quora