Overton Quarry #3 (Silurian of the United Kingdom)

Where: England, United Kingdom (52.5° N, 2.6° W: paleocoordinates 25.7° S, 12.3° W)

• small collection-level geographic resolution

When: Overton Formation, Ludfordian (425.6 - 423.0 Ma)

• Lower Whitcliffe Beds, 1.29 - 3.65 m section.

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, bioturbated, shelly/skeletal siltstone

• interbedded highly bioturbated calcareous siltstones in which most lamination destroyed by bioturbation. alternates with thin 'storm generated' siltstone and shell laminae. minor scour channels and slumping. occassional symmetric and asymmetric ripple laminae.

Primary reference: D. D. J. Antia. 1981. Faunas from the Upper Silurian (Upper Ludlovian) in the Ludlow-Much Wenlock District, England. Geological Journal 16:137-147 [J. Alroy/M. Sommers/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 8322: authorized by John Alroy, entered by Mike Sommers on 06.07.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• 6161 total specimens for ALL 6 collections.
unclassified
  -
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
columnals
Gastropoda
 Murchisoniina - Loxonematidae
"Loxonema obsoletum" = Loxonema obsoleta
"Loxonema obsoletum" = Loxonema obsoleta de Sowerby and Murchison 1839 snail
 Bellerophontida - Pterothecidae
"Bucanopsis expansus" = Phragmosphaera expansus
"Bucanopsis expansus" = Phragmosphaera expansus de Sowerby and Murchison 1839 snail
 Euomphalina - Oriostomatidae
"Cyclonema corallii" = Oriostoma coralli
"Cyclonema corallii" = Oriostoma coralli de Sowerby and Murchison 1839 snail
Bivalvia
 Cardiidia - Grammysiidae
Fuchsella amygdalina Sowerby 1827 clam
 Cyrtodontida - Cardiolidae
Cephalopoda
 Orthocerida - Kionoceratidae
 Orthocerida - Orthoceratidae
Orthoceras sp. Breynius 1832
Strophomenata
 Strophomenida - Strophochonetidae
Rhynchonellata
 Orthida - Draboviidae
Salopina lunata Sowerby 1839
 Atrypida - Atrypidae
Atrypa reticularis Linnaeus 1758
 Rhynchonellida - Trigonirhynchiidae
Lingulata
 Lingulida - Discinidae
Craniata
 Craniopsida - Craniopsidae
Stenolaemata
 Cystoporata - Ceramoporidae
Ceramopora sp. Hall 1851
 Trepostomata - Heterotrypidae
Leioclema sp. Ulrich 1882
Polychaeta
 Serpulimorpha -
Ostracoda
 Podocopida - Bairdiocyprididae
 Palaeocopida -