Aucun site ne correspond à la recherche spécifiée (TennesseeCretaceousRosebud FormationUSA: South DakotaMioceneRound Mountain SiltUSA: CaliforniaMiddle Miocene (Barstovian)Rust Formation* Walcott-Rust quarry USA: New YorkUpper OrdovicianSan Diego FormationUSA: CaliforniaMiddle-Upper Pliocene[verification needed]Schoonmaker Reef and Soldiers'Home ReefUSA: WisconsinSilurianSentinel Butte FormationUSA: North Dakota[verification needed]Paleocene[verification needed]Sheep Creek FormationUSA: NebraskaMiocene (Upper Hemingfordian).