Second Abden Shale, Level 97 (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 6433: authorized by John Alroy, entered by Mike Sommers on 01.03.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Foraminifera
 Endothyroidea - Loeblichiidae
 Ammodiscoidea - Ammodiscidae
Glomospira sp. Rzehak 1895
Chondrichthyes
 Euselachii -
Holmesella sp. elasmobranch
Echinoidea
  - Archaeocidaridae
"Echinocrinus urei" = Archaeocidaris
"Echinocrinus urei" = Archaeocidaris sea urchin
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
Ostracoda
 Palaeocopida - Paraparchitidae
Gastropoda
 Murchisoniina - Gosseletinidae
Glabrocingulum armstrongi Thomas 1940 snail
 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)
 Heterostropha - Donaldinidae
"Aclisina pulchra" = Donaldina pulchra
"Aclisina pulchra" = Donaldina pulchra de Koninck 1881 snail
var. intermedia
 Bellerophontida - Bellerophontidae
"Bucaniopsis decussatus" = Retispira decussatus
"Bucaniopsis decussatus" = Retispira decussatus Fleming 1828 snail
 Neritoidea - Naticopsidae
Naticopsis sp. M'Coy 1844 snail
Bivalvia
 Pectinida - Entoliidae
Pernopecten sowerbyi M'Coy 1844 scallop
 Ostreida - Pterineidae
Strophomenata
 Productida - Productellidae
Rhynchonellata
 Spiriferida - Ambocoeliidae
Crurithyris sp. George 1931
Stenolaemata
 Cryptostomata - Fenestellidae