Headon Hill, Middle Headon Beds, Isle of Wight (Eocene of the United Kingdom)

Where: England, United Kingdom (50.6° N, 1.6° W: paleocoordinates 49.1° N, 5.4° W)

• coordinate estimated from map

When: Middle Member (Headon Beds Formation), Late/Upper Eocene (37.2 - 33.9 Ma)

• unit thickness approx. 30 ft.

• member-level stratigraphic resolution

Environment/lithology: marginal marine; pebbly, shelly/skeletal, sandy, calcareous claystone and limestone

• brackish water
• clay with some sand with pebbles, shell beds and some lignite bands

Size class: macrofossils

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 40890: authorized by John Alroy, entered by Erin Leckey on 02.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
 Cardiida - Veneridae
Venus sp. Linnaeus 1758 venus clam
Cytherea incrassata Sowerby 1817 venus clam
 Nuculida - Nuculidae
Gastropoda
 Stromboidea - Strombidae
"Fusus sp." = Rostellaria (Fusus)
"Fusus sp." = Rostellaria (Fusus) Bruguière 1789 true conch
 Sorbeoconcha - Potamididae
Potamides sp. Brongniart 1810 horn snail
Potamides concava horn snail
"P. concavus"
Potamides cinctus horn snail
 Sorbeoconcha - Thiaridae
"Melania sp." = Thiara
"Melania sp." = Thiara Röding 1798 snail
 Basommatophora - Planorbidae
 Neritoidea - Neritidae
Cyrena
  -
Limnaea
  -