Also known as Chama-Bed

Where: England, United Kingdom (50.7° N, 1.7° W: paleocoordinates 49.2° N, 5.6° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

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

• this bed is 18 ft thick, the lettering of the beds starts with the lowest Barton beds, this bed is also known as the Chama-bed

• bed-level stratigraphic resolution

Environment/lithology: marine; shelly/skeletal, gray, blue, sandy claystone and gray, green, argillaceous sandstone

Size class: macrofossils

Collection methods: In the introduction, Burton says that he is reporting fauna "the horizons of which are known to the author", and states that he has collected 480 specimens. It is also clear that he is pulling from other sources, some published (in difficult to obtain British journals), some not. It's difficult to tell which are his and which aren't. This is not a definitive source for this collection, but I think it's a reasonable place to start.

Primary reference: E. S.t. J. Burton. 1933. Faunal Horizons of the Barton Beds in Hampshire. Proceedings of the Geologist's Association 44:131-167 [J. Alroy/E. Leckey/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 42646: authorized by John Alroy, entered by Erin Leckey on 03.08.2004

Creative Commons license: CC BY (attribution)