Second Abden Shale, Level 74 (Carboniferous of the United Kingdom)

Where: Scotland, United Kingdom (56.1° N, 3.2° W: paleocoordinates 1.8° S, 2.5° E)

• small collection-level geographic resolution

When: Second Abden Shale Formation, Brigantian (336.0 - 330.9 Ma)

• Brigantian age was shown by Brindley and Spinner 1989, Proc. Yorkshire Geol. Soc. 47:215-231

• bed-level stratigraphic resolution

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

• Sediments were deposited in a gap between periods of volcanic activity, the series represents a transgression from tidal-flat to subtidal environment.
• thin sections of the shale show it to consist predominantly of clay minerals with varying admixtures of sand and silt sized particles, normally quartz but with some chlorite and feldspar...interlaminations of fine sandy material in their more argillaceous basic substance.

Collection methods: bulk, chemical, mechanical, peel or thin section, sieve,

Primary reference: L. Ferguson. 1962. The paleoecology of a Lower Carboniferous marine transgression. Journal of Paleontology 36:1090-1107 [J. Alroy/M. Sommers/J. Ju]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 6407: authorized by John Alroy, entered by Mike Sommers on 01.03.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Rastidiscus sp.
Foraminifera
 Ammodiscoidea - Ammodiscidae
Glomospira sp.
Glomospira sp. Rzehak 1895
Rhodophyceae
  - Aoujgaliaceae
Fourstonella fusiformis
 Coleoloida -
Ortonia carbonaria
Ostracoda
 Palaeocopida - Paraparchitidae
Paraparchites okeni
Rhynchonellata
 Spiriferida - Ambocoeliidae
Crurithyris urei
Crurithyris urei Fleming 1828
 Orthida - Schizophoriidae
Schizophoria sp., Schizophoria resupinata
Schizophoria sp. King 1850
Strophomenata
 Productida - Productidae
Productidae indet.
 Productida - Productellidae
Eomarginifera longispinus
Lingulata
 Lingulida - Discinidae
Orbiculoidea nitida
Gastropoda
 Bellerophontida - Bellerophontidae
"Bucaniopsis sp." = Bucanopsis
"Bucaniopsis sp." = Bucanopsis Ulrich and Scofield 1897 snail
nuclei
 Murchisoniina - Soleniscidae
"Soleniscus (Macrochilina) brevis" = Strobeus brevis, "Soleniscus (Macrochilina) sp." = Strobeus
"Soleniscus (Macrochilina) brevis" = Strobeus brevis White 1881 snail
sgn. (Macrochilina)
"Soleniscus (Macrochilina) sp." = Strobeus de Koninck 1881 snail
sgn. (Macrochilina)
Cephalopoda
 Orthocerida -
Cycloceras sp.
Cycloceras sp. M'Coy 1844