Béon 1 (Miocene of France)

Also known as Montréal-du-Gers

Where: Midi-Pyrenees, France (43.9° N, 0.2° E: paleocoordinates 44.1° N, 1.2° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: MN 4 (16.9 - 16.0 Ma)

Environment/lithology: fluvial-lacustrine; marl

Size classes: macrofossils, mesofossils

Collected by F. Duranthon et al. (MHNT) in 1987-2003

Collection methods: bulk, sieve

• specimens are reposited in the Muséum d’Histoire Naturelle Toulouse (MHNT)

Primary reference: J.-C. Rage and S. Bailon. 2005. Amphibians and squamate reptiles from the late early Miocene (MN 4) of Béon 1 (Montréal-du-Gers, southwestern France). Geodiversitas 27(3):413-441 [J. Mueller/T. Liebrecht]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 136919: authorized by Johannes Mueller, entered by Torsten Liebrecht on 06.12.2012, edited by Mark Uhen

Creative Commons license: CC BY (attribution)

Taxonomic list

Osteichthyes
 Salientia -
Latonia aff. ragei Hossini 1993 frog
10 skull bones (Béon 2004 LT 11 to 14), 4 vertebrae (Béon 2004 LT 15 and 16), 1 coracoid (Béon 2004 LT 17), 3 longbones (Béon 2004 LT 18 to 20)
 Salientia - Ranidae
Pelophylax sp.1 Fitzinger 1843 frog
2 angulosplenials (Béon 2004 LT 21), 12 vertebrae (Béon 2004 LT 22 and 23), 7 longbones (Béon 2004 LT 24 to 27)
 Caudata - Urodela
cf. Chelotriton sp. Pomel 1853 newt
1 incomplete vertebra (Béon 2004 LT 1)
Triturus aff. helveticus newt
21 trunk vertebrae (Béon 2004 LT 2 to 4)
Triturus sp. Rafinesque 1815 newt
8 vertebrae (Béon 2004 LT 7 and 8), 4 longbones (Béon 2004 LT 9 and 10)
Triturus cf. marmoratus Latreille 1800 marbled newt
10 trunk vertebrae (Béon 2004 LT 5 and 6)
Reptilia
 Squamata - Lacertidae
Lacertidae "indet. 1" Bonaparte 1831 squamates
5 dentaries (Béon 2004 LT 30 and 31)
Lacertidae "indet. 2" Bonaparte 1831 squamates
2 dentaries (Béon 2004 LT 32 and 33), larger than 'indet 1'
Lacertidae indet. Bonaparte 1831 squamates
2 premaxillae (Béon 2004 LT 34), 4 fragments of dentigerous bone (Béon 2004 LT 35), 2 longbones (Béon 2004 LT 36 and 37)
 Squamata - Varanidae
Varanus sp. Merrem 1820 monitor lizard
4 vertebrae (Béon 2004 LT 53 to 56)
 Squamata - Anguidae
Pseudopus laurillardi Lartet 1851 legless lizard
posterior part of a braincase (Béon 2004 LT 38), 1 right dentary (Béon 2004 LT 39) 129 vertebrae (Béon 2004 LT 40 to 47; Béon E3 SN 1 and SN 2; Béon 98 déblais SN 1), 16 osteoderms (Béon 2004 LT 48)
Ophisaurus sp. Daudin 1803 glass lizard
1 fragm. left dentary (Béon 2004 LT 49), 1 pterygoid (Béon 2004 LT 50, assignment uncertain), 20 vertebrae (Béon 2004 LT 51 and 52)
 Squamata - Viperidae
Viperidae "indet. (Vipera ["oriental viper"] or Daboia)" Oppel 1811 viper
141 trunk vertebrae (Béon 2004 LT 83 to 86; Béon 93 E3 SN 6; Béon 98 déblais SN 2; Béon E3 3043; Béon 98 F1 3074)
Viperidae indet. Oppel 1811 viper
5 venom fangs (Béon 2004 LT 87), 36 incomplete vertebrae (Béon 2004 LT 88; Béon 93 E3 SN 7)
 Squamata - Pythonidae
Python europaeus python
34 vertebrae (Béon 2004 LT 59 and 60; Béon 93 E3 SN 3 and 4; Béon 98 E3 3023, 3040, 3053 and 3056; Béon 98 F1 3049)
 Squamata - Elapidae
Elapidae indet. Boié 1827 snake
3 incomplete trunk vertebrae (Béon 2004 LT 81)
Micrurus gallicus Rage and Holman 1984 coral snake
7 trunk vertebrae (Béon 2004 LT 80)
 Squamata - Colubridae
Palaeonatrix aff. lehmani Rage and Roček 1983 colubrid snake
18 trunk vertebrae (Béon 2004 LT 72 and 73)
Colubrinae indet. Oppel 1811 colubrid snake
41 trunk vertebrae (Béon 2004 LT 64)
Texasophis meini Rage and Holman 1984 colubrid snake
16 trunk vertebrae (Béon 2004 LT 62 and 63; Béon 98 F1 3076)
Coluber pouchetii racer
12 trunk vertebrae (Béon 2004 LT 61)
Natricinae indet. Bonaparte 1838 colubrid snake
1 incomplete maxilla (Béon 2004 LT 76), 101 trunk vertebrae (Béon 2004 LT 77 to 79)
Neonatrix natricoides colubrid snake
6 trunk vertebrae (Béon 2004 LT 75)
Neonatrix europaea Rage and Holman 1984 colubrid snake
4 trunk vertebrae (Béon 2004 LT 74)
Natrix sansaniensis water snake
144 trunk vertebrae (Béon 2004 LT 65 to 68; Béon 91 E3 SN 1)
Natrix cf. longivertebrata Szyndlar 1984 water snake
1 trunk vertebra (Béon 2004 LT 69)
Natrix aff. merkurensis Ivanov 2002 water snake
24 trunk vertebrae (Béon 2004 LT 70 and 71)
 Squamata - Crotalidae
Vipera sp. Laurenti 1768 pit viper
"V. aspis complex", 13 trunk vetrebrae (Béon 2004 LT 82; Béon 93 E3 SN 5)
 Squamata -
Scolecophidia indet. snake
1 trunk vertebra (Béon 2004 LT 58)
 Squamata - Gekkonidae
Gekkonidae indet. Gray 1825 gecko
2 incomplete dentaries (Béon 2004 LT 28 and 29)
 Squamata -
Amphisbaenia indet. worm lizard
4 trunk vertebrae (Béon 2004 LT 57)
Mammalia
 Ungulata - Suidae
 Ungulata -
Taucanamo grandaevum2, "Chicochoerus minus n. gen." = Palaeochoerus minus2
Taucanamo grandaevum2 Fraas 1870 even-toed ungulate
"Chicochoerus minus n. gen." = Palaeochoerus minus2 Gope Posse 1972 even-toed ungulate