Seafield, Osborne Series (bed 3), Isle of Wight (Eocene of the United Kingdom)

Where: England, United Kingdom (50.7° N, 1.1° W: paleocoordinates 49.2° N, 5.0° W)

• coordinate estimated from map

• local area-level geographic resolution

When: St. Helen's Sands Member (Osborne Beds Formation), Late/Upper Eocene (37.2 - 33.9 Ma)

• Forbes calls this bed 1, and calls the subunit the St. Helen's Sands, a naming that I'm not sure anyone else follows. Bed thickness is 14 ft.

• bed-level stratigraphic resolution

Environment/lithology: concretionary, argillaceous, calcareous sandstone and poorly lithified, concretionary, sandy, cherty/siliceous sandstone

• This bed is pale greenish white and yellowish sands, hardening into sandstones, with large lenticular siliceous concretions and spongoid bodies. The Osborne Beds are sandstone and clay beds with concretions and some interbedded marl.

Primary reference: E. Forbes. 1856. On the Tertiary fluvio-marine formation of the Isle of Wight. Memoirs of the Geological Survey of Great Britain, and of the Museum of Practical Geology 1-162 [J. Alroy/E. Leckey/E. Leckey]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 40293: authorized by John Alroy, entered by Erin Leckey on 21.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Truncatelloidea - Hydrobiidae
Hydrobia sp. Hartmann 1821 snail
 Sorbeoconcha - Thiaridae
"Melania excavata" = Thiara
"Melania excavata" = Thiara snail