Yegua Formation

Geology

Group: Claiborne

Members: unnamed (28)

Lithologies: not reported (10), claystone (8), "shale" (8), sandstone (5), "mixed carbonate-siliciclastic" (1)

Paleoenvironments: marine indet. (9), terrestrial indet. (1), carbonate indet. (4), marginal marine indet. (5), coastal indet. (9)

Age range: Bartonian or 41.30000 to 38.00000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Middle Eocene47.8 - 37.71USA (Texas) (37559)
Middle Eocene47.8 - 37.71Mexico (Tamaulipas) (43027 43035 43038 43039 43040 43041 43042 43043 43044 43045)
Bartonian41.3 - 38.0USA (Texas) (77352 91790 92218 93892 93893 93894 93895 93896 93897 93898 98890 98891 99058 205460 205461 205483 205486)