Coombe Quarry, Mapperton, Bed 1b (Jurassic of the United Kingdom)

Where: United Kingdom (50.8° N, 2.7° W: paleocoordinates 39.2° N, 8.4° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Scissum ammonoid zone, Opalinum (175.6 - 171.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, fine-grained, peloidal, gray limestone

• limestone, fine-grained to saccharoidal, grey, weathering cream, hard, burrowed, with clouds of fine cream pellets

Size class: macrofossils

Primary reference: R. Chandler and J. Callomon. 2009. The Inferior Oolite at Coombe Quarry, near Mapperton, Dorset, and a new Middle Jurassic ammonite faunal horizon, Aa-3b, Leioceras comptocostosum n.biosp. in the Scissum Zone of the Lower Aalenian. Proceedings of the Dorset Natural History and Archaeological Society 130:99-132 [M. Aberhan/T. Schossleitner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 141360: authorized by Martin Aberhan, entered by Thomas Schossleitner on 26.03.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Pectinida - Pectinoidae
 Pectinida - Limidae
Plagiostoma sp. Sowerby 1814 file clam
 Ostreida - Gryphaeidae
Liostrea sp. Douvillé 1904 oyster
 Pholadomyida - Pholadomyidae
Pholadomya sp. Sowerby 1823 clam
Cephalopoda
 Ammonitida - Graphoceratidae
Leioceras grave ammonite
Leioceras lineatum Buckman 1899 ammonite
Leioceras cf. opalinum Reinecke 1818 ammonite
 Ammonitida - Hildoceratidae
Tmetoceras scissum Benecke 1865 ammonite