Tirabuzon Formation

The Tirabuzon Formation is a geologic formation in Mexico. It preserves fossils dating back to the Neogene period, Pliocene epoch.

Fossil content
The following fossils have been reported:


 * Mammals


 * aff. Pontoporia species
 * cf. Scaphokogia species
 * Stenella species
 * Balaenopterinae indeterminate
 * Otariinae indeterminate
 * Phocoeninae indeterminate
 * Kogiidae indeterminate
 * Physeteridae indeterminate


 * Sharks


 * Carcharhinus brachylurus
 * Carcharhinus galapagensis
 * Carcharhinus albimarginatus
 * Carcharhinus velox
 * Carcharhinus limbatus
 * Carcharhinus altimus
 * Carcharhinus falciformis
 * Carcharhinus obscurus
 * Carcharhinus leucas
 * Carcharodon carcharias
 * Carcharodon sulcidens
 * Galeocerdo rosaliaensis
 * Hemipristis serra
 * Hexanchus griseus
 * Isurus benedeni
 * Isurus oxyrinchus
 * Megalodon
 * Odontaspis acutissima
 * Prionace glauca
 * Rhizoprionodon longurio
 * Sphyrna vespertina
 * Sphyrna mokarran
 * Sphyrna zygaena
 * Sphyrna lewini
 * Sphyrna media
 * Cetorhinus species
 * Heterodontus species
 * Notorhynchus species
 * Squalus species


 * Bivalves


 * Argopecten ventricosus
 * Argopecten cf. callidus
 * Argopecten mendenhalli
 * Chagrepecten dallasi
 * Chlamys corteziana
 * Chlamys opuntia
 * Euvola vogdesi
 * Flabellipecten stearnsii
 * Flabellipecten refugioensis
 * Leopecten bakeri
 * Leptopecten latiauratus
 * Nodipecten subnodosus
 * Patinopecten santarosaliensis
 * Patinopecten species