Seafield, Osborne Series (bed 11), 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: Nettlestone Grits Member (Osborne Beds Formation), Late/Upper Eocene (37.2 - 33.9 Ma)

• Forbes calls this bed 11, and calls the subunit the Nettlestone Grits (numbering starts with the St. Helen's Sands above them), a naming that I'm not sure anyone else follows. Bed thickness is 8 ft.

• bed-level stratigraphic resolution

Environment/lithology: concretionary, argillaceous, calcareous sandstone and concretionary, shelly/skeletal, cherty/siliceous limestone

• This bed is freestone or rag[strat column shows this to be limestone], with siliceous concretions passing into a grit, a great part of this bed is made of comminuted shells. The Osborne Beds are sandstone and clay beds with concretions and some interbedded marl.

Size class: macrofossils

Preservation: cast, mold/impression

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 40300: authorized by John Alroy, entered by Erin Leckey on 21.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Architaenioglossa - Viviparidae
 Truncatelloidea - Hydrobiidae
Hydrobia sp. Hartmann 1821 snail
 Sorbeoconcha - Thiaridae
"Melania excavata" = Thiara
"Melania excavata" = Thiara snail
 Sorbeoconcha - Melanopsidae
 Sorbeoconcha - Cerithiidae
Cerithium sp. Bruguière 1789 cerith snail
 Pulmonata - Achatinidae
 Basommatophora - Planorbidae
Planorbis rotundatus Brongniart 1810 pulmonate
 Teleostei -
 Testudines -
"Chelonia indet." = Testudines
"Chelonia indet." = Testudines Batsch 1788 turtle