Wai Lek pit (Eocene of Thailand)

Also known as Krabi Basin; Ban Wai lek

Where: Thailand (8.0° N, 99.1° E: paleocoordinates 6.0° N, 103.0° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Krabi Basin B2 Formation, Late/Upper Eocene (37.2 - 33.9 Ma)

• from the "Main lignite seam (Formation B2)" which has "yielded almost all mammal remains known from Krabi" (Ducrocq et al. 2006)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lignite

Size classes: macrofossils, mesofossils

Collection methods: quarrying

Primary reference: J.-C. Rage, E. Buffetaut, H. Buffetaut-Tong, Y. Chaimanee, S. Ducrocq, J.-J. Jaeger, and V. Suteethorn. 1992. A colubrid snake in the late Eocene of Thailand: the oldest known Colubridae (Reptilia, Serpentes). Comptes Rendus de l’Académie des Sciences, Paris. Série 2 314:1085-1089 [J. Head/J. Head/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 49078: authorized by Jason Head, entered by Jason Head on 07.04.2005, edited by John Alroy, Patricia Holroyd, Lars van den Hoek Ostende, Philip Mannion, Mark Uhen, Pauline Coster and Grace Varnham

Creative Commons license: CC BY (attribution)

Taxonomic list

• a large number of additional papers on mammals have not been entered yet
unclassified
  -
Reptilia
 Crocodylia - Crocodylidae
 Crocodylia - Gavialidae
Maomingosuchus sp.12 Shan et al. 2017 crocodilian
PRC-1121-1123
cf. Eosuchus lerichei6 Dollo 1907 crocodilian
 Crocodylia - Alligatoridae
Allognathosuchus sp.6 Mook 1921 crocodilian
 Crocodylia -
Krabisuchus siamogallicus11 Martin and Lauprasert 2010 crocodilian
Kr-C specimens
 Testudines - Emydidae
? Emydidae indet.6 Rafinesque 1815 turtle
 Testudines -
"Chelonia indet." = Testudines9
"Chelonia indet." = Testudines9 Batsch 1788 turtle
 Squamata - Colubridae
Colubridae indet. Oppel 1811 colubrid snake
 Squamata - Boidae
Boidae indet.6 Gray 1825 boa
Mammalia
 Insectivora -
Insectivora indet.9 Bowdich 1821 insectivoran
 Chiroptera - Pteropodidae
Pteropodidae indet.9 Gray 1821 fruit bat
 Carnivora - Nimravidae
Nimravus cf. intermedius16 Filhol 1872 false sabre-tooth
Hoplophoneus sp.16 Cope 1874 false sabre-tooth
 Theriamorpha -
 Perissodactyla - Rhinocerotidae
? Guixia cf. simplex1 rhinoceros
TF 2657 and 2658
Guixia simplex9 rhinoceros
 Perissodactyla -
Siamolophus krabiense n. gen. n. sp.10
Siamolophus krabiense n. gen. n. sp.10 Ducrocq et al. 2006 odd-toed ungulate
 Artiodactyla -
Siamotherium krabiense6 Suteethorn et al. 1988 even-toed ungulate
 Artiodactyla - Anthracotheriidae
Anthracotherium chaimanei n. sp.4, "Anthracokeryx thailandicus n. sp." = Geniokeryx thailandicus4, "Geniokeryx thailandicus" = Geniokeryx thailandicus9
Anthracotherium chaimanei n. sp.4 Ducrocq 1999 anthracothere
DMR TF 2636 - type
"Anthracokeryx thailandicus n. sp." = Geniokeryx thailandicus4 Ducrocq 1999 anthracothere
DMR TF 2638 - type
"Geniokeryx thailandicus" = Geniokeryx thailandicus9 Ducrocq 1999 anthracothere
 Artiodactyla - Entelodontidae
Entelodon aff. gobiensis9 Trofimov 1952 even-toed ungulate
 Artiodactyla -
Egatochoerus jaegeri3 Ducrocq 1994 even-toed ungulate
DMR TF 2672, 2674, 2826 and 2827
 Artiodactyla - Tragulidae
Krabimeryx primitivus n. gen. n. sp.13, Archaeotragulus krabiensis n. gen. n. sp.13
Krabimeryx primitivus n. gen. n. sp.13 Metais et al. 2001 chevrotain
Archaeotragulus krabiensis n. gen. n. sp.13 Metais et al. 2001 chevrotain
 Artiodactyla -
Krabitherium waileki14 Métais et al. 2007 ruminant
 Rodentia - Chapattimyidae
Baluchimyinae "indet. 1"9 Flynn et al. 1986 rodent
Baluchimyinae "indet. 2"9 Flynn et al. 1986 rodent
Baluchimys krabiense9 Marivaux et al. 2000 rodent
 Dermoptera -
Dermotherium major n. gen. n. sp.7
Dermotherium major n. gen. n. sp.7 Ducrocq et al. 1992 colugo
DMR TF 2580 - holotype
 Primates - Tarsiidae
Tarsiidae indet.8 Gray 1825 tarsier
TF 3476; "omomyids cannot be ruled out"
 Primates - Amphipithecidae
Amphipithecidae indet.9 Godinot 1994 monkey
Siamopithecus eocaenus2 Chaimanee et al. 1997 monkey
DMR TF 3634
 Primates - Ekgmowechashalidae
Gatanthropus sp.15 Ni et al. 2016 primate
TF 3475; originally entered as "Ampithecidae indet."