Madagascar Basin (Neogene of Madagascar)

Where: Madagascar (24.4° S, 58.3° E: paleocoordinates 25.2° S, 57.1° E)

• coordinate stated in text

When: Neogene (23.0 - 2.6 Ma)

• possibly Calabrian. Pleistocene age needs to be tested

Environment/lithology: basinal (siliceous); lithology not reported

• specimens are found in the center of manganese nodules

Size class: macrofossils

Preservation: original phosphate

Primary reference: C. Roux and P. Geistodoerfer. 1988. Dents de requins et bulles tympaniques de cetaces: Noyaux de nodules polymetalliques recoltes dans L'Ocean Indien. Cybium 12(2):129-137 [M. Uhen/M. Uhen]more details

Purpose of describing collection: taphonomic analysis

PaleoDB collection 55451: authorized by Mark Uhen, entered by Mark Uhen on 25.10.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

 Odontaspidida - Alopiidae
Alopias superciliosus Lowe 1840 thresher shark
 Plagiostomi - Squalidae
"Carcharocles megalodon" = Otodus megalodon
"Carcharocles megalodon" = Otodus megalodon Agassiz 1843 megalodon
Specimen exhibited in the Geology collection of the Museum of Natural History of Paris
 Lamniformes - Otodontidae
Parotodus benedeni Le Hon 1871 mackerel shark
 Lamniformes - Lamnidae
Isurus paucus Guitart-Manday 1966 mako shark
Isurus oxyrinchus Rafinesque 1810 mako shark
 Lamniformes - Odontaspididae
Odontaspis ferox Risso 1826 sand tiger shark
 Euselachii - Mitsukurinidae
Mitsukurina owstoni goblin shark
 Cetacea - Kogiidae
Kogia sp. Gray 1846 pygmy sperm whale
 Cetacea - Delphinidae
Grampus griseus Cuvier 1812 Risso's dolphin
Delphinus sp. Linnaeus 1758 common dolphin
Stenella sp. Gray 1866 dolphin
 Cetacea - Ziphiidae
Mesoplodon sp. Gervais 1850 beaked whale