Second Abden Shale, Level 90 (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 6423: 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
  -
Stacheiodes sp.
Foraminifera
 Endothyroidea - Endothyridae
Plectogyra baileyi
Rhodophyceae
  - Aoujgaliaceae
Stacheia sp.
Stacheia sp. Brady 1876
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
Ostracoda
 Palaeocopida - Paraparchitidae
Paraparchites okeni
 Podocopida - Bairdiidae
Bairdia hisingeri
Cephalopoda
 Pseudorthocerida - Pseudorthoceratidae
Pseudorthoceras aff. knoxense
Gastropoda
 Murchisoniina - Soleniscidae
"Soleniscus (Macrochilina) brevis" = Strobeus brevis
"Soleniscus (Macrochilina) brevis" = Strobeus brevis White 1881 snail
sgn. (Macrochilina)
 Heterostropha - Donaldinidae
"Aclisina pulchra" = Donaldina pulchra
"Aclisina pulchra" = Donaldina pulchra de Koninck 1881 snail
var. intermedia
 Bellerophontida - Bellerophontidae
"Bucaniopsis sp." = Bucanopsis
"Bucaniopsis sp." = Bucanopsis Ulrich and Scofield 1897 snail
nuclei
 Neritoidea - Naticopsidae
Naticopsis sp.
Naticopsis sp. M'Coy 1844 snail
Bivalvia
  -
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
lamellibranch spat.
 Pectinida - Pterinopectinidae
Dunbarella papyraceus
 Ostreida - Pterineidae
Actinopteria fluctuosa
Craniata
 Craniida - Craniidae
Crania sp.
Crania sp. Retzius 1781
Strophomenata
 Productida - Productellidae
Eomarginifera longispinus
 Productida - Productidae
Productidae indet.
Rhynchonellata
 Orthida - Schizophoriidae
Schizophoria sp., Schizophoria resupinata
Schizophoria sp. King 1850
 Spiriferida - Ambocoeliidae
Crurithyris urei
Crurithyris urei Fleming 1828
Lingulata
 Lingulida - Discinidae
Orbiculoidea nitida
 Lingulida - Lingulidae
"Lingula squamiformis" = Lingularia squamiformis
"Lingula squamiformis" = Lingularia squamiformis Phillips 1836
Stenolaemata
 Cryptostomata - Fenestellidae
Fenestellidae indet.
 Coleoloida -
Ortonia carbonaria