Nant-y-Gamar, Llandudno, bryozoan buildup (Carboniferous of the United Kingdom)

Also known as Reef 1313

Where: Wales, United Kingdom (53.3° N, 3.8° W: paleocoordinates 6.7° S, 0.4° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Llandudno Pier Dolomite Formation, Asbian (340.0 - 336.0 Ma)

• upper part of the formation

• group of beds-level stratigraphic resolution

Environment/lithology: platform or shelf-margin reef; lithified wackestone and lithified packstone

• northern margin of an extensive carbonate platform north of St. George's Land
• Basal facies: mud-rich wackestone/floatstone with bryozoans, corals, crinoids, brachiopods, gastropods, 2 m thick. Bulk facies: bryozoan fine packstone with crinoids, brachiopods, rare trilobits, 30 m thick. Bryozoan packstone capbeds with corals, brachiopods, gastropods, crinoids and skeletal debris, 3 m thick.

Size classes: macrofossils, mesofossils, microfossils

Collection methods: peel or thin section,

Primary reference: A. J. Bancroft, I. D. Somerville, and A. R. E. Strank. 1988. A bryozoan buildup from the Lower Carboniferous of North Wales. Lethaia 21:51-65 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 76084: authorized by Wolfgang Kiessling, entered by Uta Merkel on 13.11.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Chlorophyceae
 Dasycladales -
Koninckopora minuta, Koninckopora mortelmansi, Koninckopora inflata
Koninckopora inflata de Koninck 1842
Foraminifera
  -
Forschia parvula, ? Koskinotextularia cribriformis, Florennella sp., Nodosarchaediscus sp., Plectogyranopsis sp., Glomospiranella sp.
Florennella sp. Conil 1979
 Tetrataxoidea - Tetrataxidae
Tetrataxis paraminima
 Tetrataxoidea - Valvulinellidae
Valvulinella youngi
 Fusulinoidea - Eostaffellidae
Eostaffella sp., Mediocris mediocris
Eostaffella sp. Rauser-Chernousova 1948
Mediocris mediocris Vissarionova 1948
 Endothyroidea - Endothyridae
Endothyra ? acantha, Endothyranopsis crassa, Endostaffella fluctata, Nibelia nibelis
 Fusulinina - Parathuramminidae
Parathurammina suleimanovi
 Archaediscacea - Archaediscidae
Archaediscus involutus
 Fusulinina - Pseudoammodiscidae
Brunsia irregularis, Brunsia pulchra, Pseudoammodiscus nudus
 Fusulinina - Earlandiidae
Earlandia vulgaris, Earlandia minor
Anthozoa
 Favositida - Micheliniidae
Michelinia sp., Michelinia cf. tenuisepta
Michelinia sp. de Koninck 1841 tabulate coral
 Auloporida - Syringoporidae
Syringopora sp.
Syringopora sp. Goldfuss 1826 tabulate coral
 Stauriida - Antiphyllidae
Fasciculophyllum sp.
Fasciculophyllum sp. Thomson 1883 horn coral
 Stauriida - Hapsiphyllidae
Zaphrentites sp.
Zaphrentites sp. Hudson 1941 horn coral
 Stauriida - Laccophyllidae
Amplexocarinia sp.
Amplexocarinia sp. Soshkina 1928 horn coral
 Stauriida - Lithostrotionidae
Siphonodendron socialis, Siphonodendron martini
Siphonodendron martini Milne-Edwards and Haime 1851 horn coral
 Stauriida - Cyathopsidae
Pseudozaphrentoides juddi
 Stauriida - Amplexidae
Amplexus sp.
Amplexus sp. Sowerby 1814 horn coral
 Stauriida - Aulophyllidae
Clisiophyllum cf. keyserlingi
Clisiophyllum cf. keyserlingi McCoy 1849 horn coral
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
Brachiopoda
  -
Brachiopoda indet.
Brachiopoda indet. Cuvier 1805
Strophomenata
 Productida - Monticuliferidae
Gigantoproductus maximus
Stenolaemata
 Trepostomata - Heterotrypidae
Leioclema sp.
Leioclema sp. Ulrich 1882
 Trepostomata - Batostomellidae
Batostomella sp.
Batostomella sp. Bassler 1911
 Rhabdomesida - Rhomboporidae
Rhombopora sp.
Rhombopora sp. Meek 1872
 Trepostomida - Stenoporidae
Stenophragmidium sp., Stenopora sp., Tabulipora sp.
Stenopora sp. Lonsdale 1844
 Cystoporata - Fistuliporidae
Fistulipora incrustans
 Cryptostomata - Acanthocladiidae
Polypora sp.
 Cryptostomata - Fenestellidae
Fenestella sp., Hemitrypa hibernica
Fenestella sp. Lonsdale 1839
Trilobita
  -
Trilobita indet.
Trilobita indet. Walch 1771 trilobite