Headon Hill, Lower 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

• outcrop-level geographic resolution

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

• thickness is 50-60 ft.

• member-level stratigraphic resolution

Environment/lithology: marginal marine; concretionary, ferruginous, sandy, calcareous, carbonaceous claystone and sandy limestone

• brackish and fresh water
• sands and clays, calcareous, with concretions and ferruginous bands and some lignite

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 40887: authorized by John Alroy, entered by Erin Leckey on 02.07.2004, edited by Austin Hendy

Creative Commons license: CC BY (attribution)

Taxonomic list

 Mytilida - Mytilidae
Mytilus sp. Linnaeus 1758 mussel
 Cardiida -
Potamomya sp. clam
 Cardiida - Veneridae
"Pitarinae indet." = Callocardiinae
"Pitarinae indet." = Callocardiinae Dall 1895 venus clam
 Architaenioglossa - Viviparidae
Paludina sp. Férussac 1812 snail
 Rissooidea - Bithyniidae
Bithynia sp. Leach 1818 snail
 Sorbeoconcha - Potamididae
"Potamides margaritaceus" = Mesohalina margaritaceus
"Potamides margaritaceus" = Mesohalina margaritaceus Brocchi 1814 horn snail
 Sorbeoconcha - Cerithiidae
Cerithium sp. Bruguière 1789 cerith snail
 Basommatophora - Planorbidae
Planorbis lens Brongniart 1810 pulmonate