Black Rock Limestone from Burrington Combe, Bed 15, Lower Carboniferous, (Middle (Carboniferous of the United Kingdom)

Where: England, United Kingdom (51.3° N, 2.7° W: paleocoordinates 14.7° S, 0.3° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Black Rock Formation, Tournaisian (358.9 - 346.7 Ma)

• bed is 33 feet thick, top of bed is 606 feet above base of section

• bed-level stratigraphic resolution

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

• black to very dark grey fine-grained limestone, with scattered coarse crinoidal debris; massive beds (3/4 - 1-1/2 feet) alternating with shaly beds (6 inches)

Preservation: replaced with silica

Collection methods: abundant silicified fossils

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 8733: authorized by Arnold Miller, entered by Donna Carlson on 28.08.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• No crinoid identifications are made in the list but the rock is described as having "crinoidal debris"
Strophomenata
 Strophomenida - Rafinesquinidae
"Leptaena analoga" = Leptagonia analoga
"Leptaena analoga" = Leptagonia analoga Phillips 1836
 Strophomenida - Chonetidae
Chonetes sp. Fischer de Waldheim 1830
 Orthotetida - Pulsiidae
 Productida - Productellidae
Productus (Eomarginifera) cf. derbiensis
P. (Eomarginifera) cf. derbiensis
 Productida - Productidae
"Productus (Dictyoclostus) sp." = Dictyoclostus
"Productus (Dictyoclostus) sp." = Dictyoclostus
P. (Dictyoclostus) sp.
Rhynchonellata
 Spiriferida -
Spiriferidina indet. Waagen 1883
smooth spiriferid
 Orthida - Rhipidomellidae
 Athyridida - Athyrididae
Anthozoa
 Stauriida - Zaphrentoididae
"Zaphrentis konincki" = Sychnoelasma hawbankense
"Zaphrentis konincki" = Sychnoelasma hawbankense Mitchell and Somerville 1988 horn coral
'Zaphrentis' konincki
 Stauriida - Antiphyllidae
 Stauriida - Aulophyllidae
 Stauriida - Palaeosmiliidae
 Stauriida - Cyathopsidae
Caninia cornucopiae Michelin 1840 horn coral
 Stauriida - Bothrophyllidae
Caninophyllum patulum horn coral
widely septate form
 Stauriida - Cyathaxoniidae
Cyathaxonia cornu Michelin 1846 horn coral
 Stauriida - Amplexidae
Amplexus sp. Sowerby 1814 horn coral
 Favositida - Micheliniidae
Michelinia sp. de Koninck 1841 tabulate coral
 Auloporida - Syringoporidae
Syringopora sp. Goldfuss 1826 tabulate coral