PBDB Collection

Working quarry at Llanarmon-yn-Ial (Carboniferous of the United Kingdom)

Where: Wales, United Kingdom (53.1° N, 3.2° W: paleocoordinates 7.8° S, 0.0° E)

• outcrop-level geographic resolution

When: Llanarmon Limestone Formation, Holkerian (346.7 - 340.0 Ma)

• Over 48 m exposed.

• member-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, dolomitic, shelly/skeletal, gray, argillaceous wackestone and grainstone

• at base, a coarse grained, red stained, dark grey crinoidal grainstone. mainly comprised of thickly bedded dark brown and dark grey wackestones, often dolomitized, with thin green clay bands and black shales.

Primary reference: I. D. Somerville and A. R. E. Strank. 1984. Discovery of Arundian and Holkerian faunas from a Dinantian platform succession in North Wales. Geological Journal 19:85-104 [J. Alroy/M. Sommers]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 6016: authorized by John Alroy, entered by Mike Sommers on 19.01.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

unclassified
-	Rectodiscus sp. Rectodiscus sp.
Chlorophyceae
Dasycladales -	Koninckopora inflata Koninckopora inflata de Koninck 1842
Foraminifera
-	Klubonibelia sp., Spinoendothyra spp. Klubonibelia sp. Spinoendothyra spp.
Fusulinina - Tournayellidae	Septabrunsiina sp. Septabrunsiina sp.
Fusulinoidea - Ozawainellidae	Eoparastaffella simplex Eoparastaffella simplex Vdovenko 1954
Fusulinoidea - Eostaffellidae	Eostaffella parastruvei Eostaffella parastruvei
Endothyroidea - Endothyridae	Globoendothyra insigna, Pojarkovella nibelis Globoendothyra insigna Pojarkovella nibelis
Archaediscacea - Archaediscidae	Glomodiscus oblongus Glomodiscus oblongus
Fusulinina - Pseudoammodiscidae	Brunsia spirillinoides Brunsia spirillinoides
Rhynchonellata
Athyridida - Athyrididae	Athyris expansa Athyris expansa
Strophomenata
Productida - Monticuliferidae	Linoprotonia hemisphaerica Linoprotonia hemisphaerica
Anthozoa
Stauriida - Cyathopsidae	Siphonophyllia cf. garwoodi Siphonophyllia cf. garwoodi horn coral
Stauriida - Axophyllidae	Axophyllum sp. Axophyllum sp. Milne-Edwards and Haime 1850 horn coral
Stauriida - Lithostrotionidae	Dorlodotia briarti, Lithostrotion sociale Dorlodotia briarti horn coral Lithostrotion sociale horn coral
Stauriida - Palaeosmiliidae	Palaeosmilia murchisoni Palaeosmilia murchisoni Milne-Edwards and Haime 1848 horn coral
Auloporida - Syringoporidae	Syringopora sp. Syringopora sp. Goldfuss 1826 tabulate coral