Burrington Combe, Bed 8 (Carboniferous of the United Kingdom)

Also known as Black Rock Limestone from Burrington Combe, Bed 8, Lower Carboniferous, (Middle-

Where: England, United Kingdom (51.3° N, 2.7° W: paleocoordinates 13.5° S, 0.1° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Black Rock Limestone Formation (Pembroke Limestone Group), Ivorian (353.8 - 345.3 Ma)

• bed is 23 feet thick; top of bed is 278 feet above base; complete lithological passage into rocks below; base taken arbitrarily at a deeply eroded shale parting

• bed-level stratigraphic resolution

Environment/lithology: marine; shelly/skeletal, black, gray limestone

• dark grey and some black more or less crinoidal limestone; rather rubbly in texture but including some massive beds

Size class: macrofossils

Preservation: replaced with silica

Primary reference: G. W. Green, M. A. Welch, and F. B. A. Welch. 1965. Geology of the Country around Wells and Cheddar (Explanation of One-inch Geological Sheet 280, New Series). Memoirs of the Geological Survey of Great Britain (280)1-225 [A. Miller/D. Carlson/O. Alfaro]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 8702: authorized by Arnold Miller, entered by Donna Carlson on 27.08.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• No crinoid identifications are made in the list but the rock is described as a "crinoidal brachiopod limestone".
Anthozoa
 Stauriida - Hapsiphyllidae
 Auloporida - Syringoporidae
Syringopora sp. Goldfuss 1826 tabulate coral
Syringopora theta
 Favositida - Micheliniidae
Michelinia favosa tabulate coral
Gastropoda
 Euomphalina - Euomphalidae
Straparollus sp. de Montfort 1810 snail
Bivalvia
 Pectinida - Aviculopectinidae
Aviculopecten sp. M'Coy 1851 scallop
Strophomenata
 Orthotetida - Pulsiidae
 Orthotetida - Schuchertellidae
 Strophomenida - Chonetidae
Chonetes sp. Fischer de Waldheim 1830
C. (Megachonetes) sp. and C. (Rugosochonetes) sp. and C. sp.
 Strophomenida - Rafinesquinidae
"Leptaena analoga" = Leptagonia analoga
"Leptaena analoga" = Leptagonia analoga Phillips 1836
 Productida - Echinoconchidae
"Productus (Pustula) cf. tenuipustulosus" = Pustula
"Productus (Pustula) cf. tenuipustulosus" = Pustula
P. (Pustula) cf. tenuipustulosus
 Productida - Productidae
"Productus (Dictyoclostus) multispiniferus" = Dictyoclostus
"Productus (Dictyoclostus) multispiniferus" = Dictyoclostus
P. (Dictyoclostus) multispiniferus
Rhynchonellata
 Rhynchonellida - Camarotoechiidae
Camarotoechia sp. Hall and Clarke 1893
 Orthida - Rhipidomellidae
Rhipidomella michelini L'Eveille 1835
 Orthida - Schizophoriidae
 Spiriferinida - Syringothyrididae
 Spiriferida -
Spiriferidina indet. Waagen 1883
smooth spiriferid
 Spiriferida - Spiriferidae
"Unispirifer tornacensis" = Atylephorus tornacensis
"Unispirifer tornacensis" = Atylephorus tornacensis de Koninck 1883
 Athyridida - Athyrididae
 Terebratulida - Dielasmatidae
Dielasma sp. King 1856
Stenolaemata
 Cryptostomata - Fenestellidae
Fenestella sp. Lonsdale 1839
Trilobita
 Proetida - Phillipsiidae
Phillipsia sp. Portlock 1843 trilobite