Corkscrew Hill (Pliocene of Mexico)

Also known as B.C.S. 2 or Loma del Tirabuzón

Where: Baja, Mexico (27.4° N, 112.3° W: paleocoordinates 27.2° N, 111.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Tirabuzon Formation, Pliocene (5.3 - 2.6 Ma)

• From the text: Reported as Gloria Formation. Based on sharks, middle Pliocene in age

• group of beds-level stratigraphic resolution

Environment/lithology: unlithified, silty siltstone and unlithified siltstone

Size class: macrofossils

Primary reference: S. P. Applegate. 1978. Phyletic studies; part 1, Tiger sharks. Revista Mexicana de Ciencias Geológicas 2(1):55-64 [M. Uhen/M. Uhen]more details

PaleoDB collection 154117: authorized by Mark Uhen, entered by Mark Uhen on 27.01.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Squaliformes - Squalidae
Squalus sp. Linnaeus 1758 dogfish shark
 Hexanchiformes - Hexanchidae
Notorhynchus sp. Ayres 1855 sevengill shark
Hexanchus griseus sixgill shark
 Lamniformes - Cetorhinidae
Cetorhinus sp. de Blainville 1816 basking shark
 Lamniformes - Otodontidae
"Carcharodon megalodon" = Carcharocles megalodon
"Carcharodon megalodon" = Carcharocles megalodon Agassiz 1843 megalodon
See Pimiento and Balk
 Lamniformes - Lamnidae
Isurus benedeni mako shark
Isurus oxyrinchus Rafinesque 1810 mako shark
Carcharodon carcharias Linnaeus 1758 great white shark
Carcharodon sulcidens Agassiz 1843 white shark
 Lamniformes - Odontaspididae
Odontaspis acutissima Agassiz 1843 sand tiger shark
 Carchariniformes - Carcharhinidae
Prionace glauca blue shark
Carcharhinus velox requiem shark
Carcharhinus limbatus requiem shark
Carcharhinus altimus requiem shark
Carcharhinus falciformis Bibron 1841 requiem shark
Carcharhinus obscurus Le Sueur 1818 requiem shark
Carcharhinus leucas Valenciennes 1839 requiem shark
Rhizoprionodon longurio sharpnose shark
 Carchariniformes - Sphyrnidae
Sphyrna mokarran hammerhead shark
Sphyrna zygaena Linnaeus 1758 hammerhead shark
Sphyrna lewini Griffith and Smith 1834 hammerhead shark
Sphyrna media Springer 1940 hammerhead shark
 Carchariniformes - Hemigaleidae
Hemipristis serra Agassiz 1843 ground shark
 Heterodontiformes - Heterodontidae
Heterodontus sp. de Blainville 1816 bullhead shark