Where: England, United Kingdom (50.7° N, 1.5° W: paleocoordinates 49.2° N, 5.4° W)

• coordinate estimated from map

• outcrop-level geographic resolution

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

• author gives formation as "Lower ? Headon Beds"

• formation-level stratigraphic resolution

Environment/lithology: silty, sandy, calcareous claystone and limestone

Size class: macrofossils

Primary reference: F. R. Woodward. 1965. Monograph of the British lower Tertiary Unionidae, with descriptions of three new species. Journal of Conchology 25:316-330 [J. Alroy/E. Leckey/E. Leckey]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 41500: authorized by John Alroy, entered by Erin Leckey on 15.07.2004

Creative Commons license: CC BY (attribution)