PBDB

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 and Pauline Coster

Creative Commons license: CC BY (attribution)

Taxonomic list

• a large number of additional papers on mammals have not been entered yet

Show authors, comments, and common names

Reptilia
Testudines - Panemydidae	? Emydidae indet.⁶ ? Emydidae indet.⁶ Rafinesque 1815 turtle
Crocodylia -	Maomingosuchus sp.¹¹ Maomingosuchus sp.¹¹ Shan et al. 2017 crocodilian PRC-1121-1123
Crocodylia - Alligatoridae	Allognathosuchus sp.⁶ Allognathosuchus sp.⁶ Mook 1921 crocodilian
Crocodylia -	Krabisuchus siamogallicus¹⁰, cf. Eosuchus lerichei⁶ Krabisuchus siamogallicus¹⁰ Martin and Lauprasert 2010 crocodilian Kr-C specimens cf. Eosuchus lerichei⁶ Dollo 1907 crocodilian
Squamata - Boidae	Boidae indet.⁶ Boidae indet.⁶ Gray 1825 boa
Squamata - Colubridae	Colubridae indet. Colubridae indet. Oppel 1811 colubrid snake
Mammalia
Primates - Amphipithecidae	Siamopithecus eocaenus² Siamopithecus eocaenus² Chaimanee et al. 1997 monkey DMR TF 3634
Primates - Tarsiidae	Tarsiidae indet.⁸ Tarsiidae indet.⁸ Gray 1825 tarsier TF 3476; "omomyids cannot be ruled out"
Primates - Ekgmowechashalidae	Gatanthropus sp.¹⁴ Gatanthropus sp.¹⁴ Ni et al. 2016 primate TF 3475; originally entered as "Ampithecidae indet."
Dermoptera -	Dermotherium major n. gen. n. sp.⁷ Dermotherium major n. gen. n. sp.⁷ Ducrocq et al. 1992 colugo DMR TF 2580 - holotype
Perissodactyla - Paraceratheriidae	"? Guixia cf. simplex" = Juxia¹ "? Guixia cf. simplex" = Juxia¹ odd-toed ungulate TF 2657 and 2658
Perissodactyla -	Siamolophus krabiense n. gen. n. sp.⁹ Siamolophus krabiense n. gen. n. sp.⁹ Ducrocq et al. 2006 odd-toed ungulate
Carnivora - Miacidae	Miacis thailandicus⁵ Miacis thailandicus⁵ carnivoran
Carnivora - Nimravidae	Nimravus cf. intermedius¹⁵, Hoplophoneus sp.¹⁵ Nimravus cf. intermedius¹⁵ Filhol 1872 false sabre-tooth Hoplophoneus sp.¹⁵ Cope 1874 false sabre-tooth
Ungulata -	Egatochoerus jaegeri³, Siamotherium krabiense⁶ Egatochoerus jaegeri³ Ducrocq 1994 even-toed ungulate DMR TF 2672, 2674, 2826 and 2827 Siamotherium krabiense⁶ Suteethorn et al. 1988 even-toed ungulate
Ungulata - Anthracotheriidae	Anthracotherium chaimanei n. sp.⁴, "Anthracokeryx thailandicus n. sp." = Anthracotherium thailandicus⁴ Anthracotherium chaimanei n. sp.⁴ Ducrocq 1999 anthracothere DMR TF 2636 - type "Anthracokeryx thailandicus n. sp." = Anthracotherium thailandicus⁴ Ducrocq 1999 anthracothere DMR TF 2638 - type
Ungulata - Tragulidae	Archaeotragulus krabiensis n. gen. n. sp.¹², Krabimeryx primitivus n. gen. n. sp.¹² Archaeotragulus krabiensis n. gen. n. sp.¹² Metais et al. 2001 chevrotain Krabimeryx primitivus n. gen. n. sp.¹² Metais et al. 2001 chevrotain
Ungulata -	Krabitherium waileki¹³ Krabitherium waileki¹³ Métais et al. 2007 ruminant

¹Antoine et al. 2003; ²Chaimanee et al. 1997; ³Ducrocq 1994; ⁴Ducrocq 1999; ⁵Ducrocq et al. 1992; ⁶Ducrocq et al. 1995; ⁷Ducrocq et al. 1992; ⁸Ducrocq et al. 2006; ⁹Ducrocq et al. 2006; ¹⁰Martin and Lauprasert 2010; ¹¹Martin et al. 2019; ¹²Metais et al. 2001; ¹³Métais et al. 2007; ¹⁴Ni et al. 2016; ¹⁵Peigne et al. 2000