Bay Ogof Hen 060 ft. (Ordovician of the United Kingdom)

Also known as N.G.R. 708252

Where: Wales, United Kingdom (51.9° N, 5.3° W: paleocoordinates 68.4° S, 21.5° W)

• local area-level geographic resolution

When: Porth Gain Beds Member (Ogof Hen Formation), Whitlandian (478.6 - 471.8 Ma)

• JA: originally entered as Arenig, but the Ogof Hen Formation is Moridunian. PJW: Porth Gain beds (sometimes put in Porth Gain formation) are Whitlandian.

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, micaceous, silty shale

• Cleaved micaceous silty mudstones with shelly layers
• Cleaved micaceous silty mudstones with shelly layers.

Size class: macrofossils

Primary reference: D. E. B. Bates. 1969. Some early Arenig brachiopods and trilobites from Wales. Bulletin of the British Museum of Natural History 18(1):1-28 [A. Miller/P. Novack-Gottshall/J. Ju]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 3713: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 07.08.1999, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

• Systematics of trilobites, brachiopods, and bivalves
Trilobita
 Phacopida - Calymenidae
 Asaphida - Asaphidae
Rhynchonellata
 Orthida - Orthidae
Orthambonites sp. Pander 1830
"Lenorthis alata" = Paralenorthis alata de Sowerby and Murchison 1839
Bivalvia
 Cyrtodontida - Cyrtodontidae
? Cyrtodonta oboloidea Hicks 1873 clam
 Arcida - Parallelodontidae
Glyptarca primaeva Hicks 1873 clam
 Cardiidia - Grammysiidae
Actinodonta ramseyensis Hicks 1873 clam
 Nuculida - Praenuculidae
Praenucula menapiensis Hicks 1873 clam
 Protobranchia -
Praearca cambriensis Hicks 1873 clam
Crinoidea
 Tetragonocrinida - Tetragonocrinidae
Ramseyocrinus cambriensis Hicks 1873 Sea lily