Seven Rock Point, Lyme Regis, UK (Jurassic to of the United Kingdom)

Also known as misspelled as Severn Rock Point in paper

Where: England, United Kingdom (50.7° N, 3.0° W: paleocoordinates 37.1° N, 2.6° E)

When: Blue Lias Formation (Lias Group), Hettangian to Hettangian (201.3 - 190.8 Ma)

• beds 7-31 of Lang's (1924) in upper part of Blue Lias

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified limestone and lithified marl

• "Rhythmically bedded with symmetrical rhythms consisting of laminated black shale followed by dark then pale marls (sometimes cemented into pale limestones) and back to laminated black shale" Represents shallow shelf.
• Limestones, marls, laminated black shales

Size class: macrofossils

Preservation: trace

Primary reference: H. V. Moghadam and C. R. C. Paul. 2000. Trace fossils of the Jurassic, Blue Lias, Lyme Regis, Southern England. Ichnos 7(4):283 -306 [R. Plotnick/R. Plotnick]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 176124: authorized by Roy Plotnick, entered by Roy Plotnick on 29.01.2016, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Crinoidea
 Isocrinida - Isocrinidae
Isocrinus sp.
Isocrinus sp. von Meyer 1836 Sea lily
Rhynchonellata
 Rhynchonellida - Wellerellidae
Calcirhynchia sp.
Calcirhynchia sp. Buckman 1917
Cephalopoda
 Ammonitida - Arietitidae
Coroniceras sp.
Coroniceras sp. Hyatt 1867 ammonite
 Nautilida -
Nautilida indet.
Nautilida indet. Agassiz 1847 nautiloid
Bivalvia
 Pectinida - Limidae
Plagiostoma sp.
Plagiostoma sp. Sowerby 1814 file clam
 Ostreida - Bakevelliidae
Gervillia sp.
Gervillia sp. Defrance 1820 oyster
 Ostreida - Gryphaeidae
Liostrea sp., Gryphaea sp.
Liostrea sp. Douvillé 1904 oyster
Gryphaea sp. Lamarck 1801 oyster
 Ichnofossils -
Rhizocorallium sp., Rosselia sp., Arenicolites sp., Chondrites sp., Taenidium sp., Thalassinoides suevicus, Palaeophycus sp., Diplocraterion sp., Planolites sp.
Rhizocorallium sp. Zenker 1836
Rosselia sp. Dahmer 1937
Arenicolites sp. Salter 1857
Chondrites sp. von Sternberg 1833
Taenidium sp. Heer 1877
Palaeophycus sp. Hall 1847
Diplocraterion sp. Torell 1870
Planolites sp. Nicholson 1873