Polastron (Miocene of France)

Where: Gers, France (43.5° N, 0.8° E: paleocoordinates 43.7° N, 0.4° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Middle Miocene (16.0 - 11.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: fluvial; sandstone

Size classes: macrofossils, mesofossils

Collected in 1980 onwards

Primary reference: E. Buffetaut, F. Crouzel, F. Juillard and F. Stigliani. 1984. Le crocodilien longirostre Gavialosuchus dans le Miocene moyen de Polastron (Gers, France). Geobios 17(1):113-117 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 143472: authorized by Philip Mannion, entered by Philip Mannion on 24.04.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

• Musee de Gimont
Gnathostomata
  -
Osteichthyes
 Temnospondyli -
Reptilia
 Testudines -
"Chelonia indet." = Testudines
"Chelonia indet." = Testudines Batsch 1788 turtle
 Testudines - Pantestudinidae
"Testudo canetotiana" = Paleotestudo antiqua
"Testudo canetotiana" = Paleotestudo antiqua Bronn 1831 turtle
 Crocodylia -
Gavialosuchus sp. Toula and Kail 1885 crocodilian
Musee de Gimont no. PNB 76 (left maxilla fragment)
 Ophidia -
Mammalia
 Rodentia - Cricetidae
Fahlbuschia sp. Mein and Freudenthal 1971 mouse
Cricetodon sansaniensis Lartet 1851 mouse
 Rodentia - Sciuridae
Spermophilinus bredai von Meyer 1848 squirrel
Heteroxerus cf. grivensis Major 1893 squirrel
 Rodentia - Castoridae
Steneofiber cf. depereti Mayet 1908 beaver
 Lagomorpha - Ochotonidae
Prolagus oeningensis K├Ânig 1825 pika
Lagopsis sp. Schlosser 1894 pika
 Lipotyphla - Talpidae
Talpidae indet. Fischer de Waldheim 1817 mole
 Perissodactyla - Rhinocerotidae
Rhinocerotidae indet. Gray 1821 rhinoceros
"Aceratherium tetradactylum" = Hoploaceratherium tetradactylum Lartet 1837 rhinoceros
 Ferae -
Carnivora indet. Bowditch 1821 carnivoran
Small individual
 Carnivora - Amphicyonidae
Amphicyon major De Blainville 1841 bear-dog
 Proboscidea - Gomphotheriidae
Gomphotherium angustidens Burmeister 1837 gomphothere
 Proboscidea - Deinotheriidae
"Deinotherium bavaricum" = Prodeinotherium bavaricum
"Deinotherium bavaricum" = Prodeinotherium bavaricum von Meyer 1831 deinothere
 Artiodactyla - Cainotheriidae
Cainotherium cf. miocoenicum even-toed ungulate
 Artiodactyla - Tragulidae
Dorcatherium crassum Lartet 1851 chevrotain
Dorcatherium guntianum von Meyer 1846 chevrotain
 Artiodactyla - Palaeomerycidae
Palaeomeryx sp. von Meyer 1834 ruminant
 Artiodactyla - Lagomerycidae
Dicrocerus elegans Lartet 1837 ruminant
 Artiodactyla - Moschidae