Second Abden Shale, Level 112 (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 6450: authorized by John Alroy, entered by Mike Sommers on 02.03.2000, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
Holothuroidea
  -
Holothuroidea indet. de Blainville 1834 sea cucumber
Echinoidea
  -
Echinoidea indet. Leske 1778 sea urchin
Stenolaemata
 Cryptostomata - Fenestellidae
 Rhabdomesida - Rhomboporidae
Rhynchonellata
 Terebratulida - Dielasmatidae
 Orthida - Schizophoriidae
Schizophoria sp. King 1850
 Spiriferida - Choristitidae
 Spiriferida - Spiriferidae
Strophomenata
 Productida - Echinoconchidae
Pustula pustulosa Phillips 1836
 Productida - Productellidae
 Productida - Productidae
Sedentaria
 Sabellida - Serpulidae
Spirorbis spp. Daudin 1800
Ostracoda
 Palaeocopida - Paraparchitidae
 Podocopida - Bythocytheridae
 Podocopida - Bairdiidae
 Podocopida - Healdiidae
Rhodophyceae
  - Aoujgaliaceae
Foraminifera
 Ammodiscoidea - Ammodiscidae
Glomospira sp. Rzehak 1895
 Tetrataxoidea - Tetrataxidae
 Endothyroidea - Endothyridae
Endothyra sp.
sp. globulus/radiata