Second Abden Shale, Level 86 (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 6419: authorized by John Alroy, entered by Mike Sommers on 01.03.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Rhodophyceae
  - Aoujgaliaceae
Foraminifera
 Endothyroidea - Endothyridae
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
Gastropoda
 Zygopleuroidea - Pseudozygopleuridae
"Zygopleura lefebvrei" = Pseudozygopleura lefebvrei
"Zygopleura lefebvrei" = Pseudozygopleura lefebvrei Léveillé 1835 snail
 Bellerophontida - Bellerophontidae
"Bucaniopsis decussatus" = Retispira decussatus
"Bucaniopsis decussatus" = Retispira decussatus Fleming 1828 snail
 Heterostropha - Donaldinidae
"Aclisina pulchra" = Donaldina pulchra
"Aclisina pulchra" = Donaldina pulchra de Koninck 1881 snail
var. intermedia
 Murchisoniina - Soleniscidae
"Soleniscus (Macrochilina) sp." = Strobeus, "Soleniscus (Macrochilina) brevis" = Strobeus brevis
"Soleniscus (Macrochilina) sp." = Strobeus de Koninck 1881 snail
sgn. (Macrochilina), nuclei
"Soleniscus (Macrochilina) brevis" = Strobeus brevis White 1881 snail
sgn. (Macrochilina)
 Neritoidea - Naticopsidae
Naticopsis sp. M'Coy 1844 snail
Bivalvia
 Nuculida - Nuculidae
 Ostreida - Pterineidae
Lingulata
 Lingulida - Discinidae
Rhynchonellata
 Orthida - Schizophoriidae
Strophomenata
 Productida - Productellidae
Stenolaemata
 Cryptostomata - Acanthocladiidae
Ostracoda
 Platycopida - Paraparchitidae
 Podocopida - Bairdiidae
 Coleoloida -