Where: England, United Kingdom (52.1° N, 1.8° W: paleocoordinates 38.5° N, 1.4° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Blue Lias Formation (Lias Group), Planorbis (201.3 - 196.5 Ma)

• The thickness of the limestone-beds (zone of Am. planorbis] in this area is about 20 feet, for Strickland notes 34 feet of strata (including 14 feet of clay on top) down to the Firestone, at Bickmarsh, east of Cleeve Prior. From the "Insect Bed."

• bed-level stratigraphic resolution

Environment/lithology: marine; limestone

Size class: macrofossils

Preservation: mold/impression

Primary reference: R. J. Tillyard. 1925. The British Liassic Dragonflies. Fossil Insects, British Museum Natural History 1:1-40 [M. Clapham/J. Karr]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 115518: authorized by Matthew Clapham, entered by Jered Karr on 02.09.2011, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)