Huitrera Formation

Geology

Members: unnamed (37)

Lithologies: "siliciclastic" (31), claystone (1), mudstone (2), "shale" (2), siltstone (1), sandstone (3), tuff (1)

Paleoenvironments: terrestrial indet. (3), fluvial-lacustrine indet. (1), lacustrine - small (1), crater lake (29), lacustrine deltaic indet. (1), lacustrine indet. (2)

Age range: base of the Early/Lower Eocene to the top of the Lutetian or 56.00000 to 41.03000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Late/Upper Paleocene - Middle Eocene59.24 - 37.71Argentina (Chubut) (140298)
Early/Lower Eocene56.0 - 48.07Argentina (Chubut) (203652)
Early/Lower Eocene56.0 - 48.07Argentina (Neuquén) (171385)
Ypresian56.0 - 48.07Argentina (Neuquén) (84702)
Ypresian56.0 - 48.07Argentina (Chubut) (133019 133043 133044 133045 133046 133047 133048 133049 133050 133051 133052 133053 133054 133055 133056 133057 133058 133059 133060 133061 133062 133063 133064 133065 133066 197634 197635 197636 197637 227287 234762)
Ypresian - Lutetian56.0 - 41.03Argentina (Río Negro) (227116)
Lutetian48.07 - 41.03Argentina (Río Negro) (169453)
Middle Eocene48.07 - 37.71Argentina (Rio Negro) (197785)
Middle Eocene - Late/Upper Eocene48.07 - 33.9Argentina (Neuquén) (136911)
Middle Eocene - Early/Lower Oligocene48.07 - 27.3Argentina (Neuquén) (84703)