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Copestake, P.; Johnson, B. (2014). Lower Jurassic Foraminifera from the Llanbedr (Mochras Farm) Borehole, North Wales, UK. Monographs of the Palaeontographical Society. 167(641)[2013]: 1-403.
290706
10.1080/02693445.2013.11963952 [view]
Copestake, P.; Johnson, B.
2014
Lower Jurassic Foraminifera from the Llanbedr (Mochras Farm) Borehole, North Wales, UK
Monographs of the Palaeontographical Society
167(641)[2013]: 1-403
Publication
Available for editors
The complete, fully cored Lower Jurassic (Hettangian, Sinemurian, Pliensbachian, Toarcian) succession from the Llanbedr (Mochras Farm) Borehole, North Wales, the thickest known British section, has yielded a diverse and well preserved foraminiferal fauna, comprising 270 species and subspecies which are described and illustrated. An additional nine taxa, not encountered at Mochras, are also described. This typical European Boreal Atlantic foraminiferal fauna is dominated by members of the Lagenida, with the Ceratobuliminoidea, Miliolida, Spirillinina, Involutinina, Buliminida and Textulariida as important accessory groups. The Ceratobuliminoidea and Miliolida are unusually diverse, with Reinholdella and Ophthalmidium being notably abundant. The presence of the Family Oberhauserellidae is significant.
A benthonic foraminiferal biozonation scheme for the Lower Jurassic, comprising 16 biozones and tied to the standard ammonite-based chronostratigraphy, is described in detail. It is recognizable across the northern European Boreal province, and is applicable to subsurface hydrocarbon exploration of the UK continental shelf and onshore Europe.
Three new genera (Duoplanum, Extonia and Haynesella) are described as well as 19 new species (Citharina sherringtoni, Duoplanum inaequale, D. leve, Glomospirella liassica, Lagena? haeusleri, L. semisulcata, Lagenammina pseudofusiformis, L. tangentia, Loxostomum liassicum, Marginulina turneri, Neobulimina bangae, Nodosaria pseudoclaviformis, Ophthalmidium strictum, Reinholdella? mochrasensis, R. robusta, Reussoolina? lacrimaforma, Semiinvoluta excelsa, Tubinella pseudoinornata and Vinelloidea lordi), and 10 new subspecies (Berthelinella involuta striata, Ichthyolaria terquemi bamardi, I. terquemi mediumcostata, Lenticulina varians barnardi, Loxostomum liassicum liassicum, L. liassicum teres, Ophthalmidium macfadyeni tenuiloculare, Paralingulina cernua ssp. A, Reinholdella margarita dorsoplana and R. pachyderma humilis). Two further species are renamed as Nodosaria whittakeri and Paralingulina paranodosaria.
Date action by
Astacolus basidentatus (Franke, 1936) † (new combination reference)
Astacolus semireticulatus Norling, 1972 † (new combination reference) Astacolus speciosus (Terquem, 1858) † (new combination reference) Berthelinella involuta subsp. striata Copestake & Johnson, 2014 † (original description) Citharina longuemari (Terquem, 1864) † (new combination reference) Citharina sherringtoni Copestake & Johnson, 2014 † (original description) Duoplanum Copestake & Johnson, 2014 † (original description) Duoplanum inaequale Copestake & Johnson, 2014 † (original description) Duoplanum leve Copestake & Johnson, 2014 † (original description) Extonia Copestake & Johnson, 2014 † (original description) Extonia aspera (Terquem & Berthelin, 1875) † (new combination reference) Glomospirella liassica Copestake & Johnson, 2014 † (original description) Haynesella Copestake & Johnson, 2014 † (original description) Haynesella pictonica (Berthelin, 1879) † (new combination reference) Ichthyolaria pupiformis (Häusler, 1881) † (new combination reference) Ichthyolaria terquemi subsp. barnardi Copestake & Johnson, 2014 † (original description) Ichthyolaria terquemi subsp. mediumcostata Copestake & Johnson, 2014 † (original description) Lagena haeusleri Copestake & Johnson, 2014 † (original description) Lagena liasica (Kübler & Zwingli, 1866) † (new combination reference) Lagena semisulcata Copestake & Johnson, 2014 † (original description) Lagenammina pseudofusiformis Copestake & Johnson, 2014 † (original description) Lagenammina tangentia Copestake & Johnson, 2014 † (original description) Lenticulina acutiangulata (Terquem, 1864) † (new combination reference) Lenticulina varians subsp. barnardi Copestake & Johnson, 2014 † (original description) Loxostomum liassicum Copestake & Johnson, 2014 † (original description) Loxostomum liassicum subsp. liassicum Copestake & Johnson, 2014 † represented as Loxostomum liassicum Copestake & Johnson, 2014 † (original description) Loxostomum liassicum subsp. teres Copestake & Johnson, 2014 † (original description) Marginulina picturata (Terquem & Berthelin, 1875) † (new combination reference) Marginulina turneri Copestake & Johnson, 2014 † (original description) Mesodentalina haeusleri (Schick, 1903) † (new combination reference) Mesodentalina tenuistriata (Terquem, 1866) † (new combination reference) Mesodentalina varians (Terquem, 1866) † (new combination reference) Nodosaria dolioligera (Schwager, 1865) † (new combination reference) Nodosaria nitidana Brand, 1937 † (additional source) Nodosaria pseudoclaviformis Copestake & Johnson, 2014 † (original description) Nodosaria radiata (Terquem, 1866) † (new combination reference) Nodosaria whittakeri Copestake & Johnson, 2014 † (original description) Ophthalmidium macfadyeni subsp. tenuiloculare Copestake & Johnson, 2014 † (original description) Ophthalmidium strictum Copestake & Johnson, 2014 † (original description) Palmula deslongchampsi (Terquem, 1864) † (new combination reference) Paralingulina compressa (Terquem, 1864) † (new combination reference) Paralingulina esseyana (Deecke, 1886) † (new combination reference) Paralingulina gottingensis (Franke, 1936) † (new combination reference) Paralingulina lanceolata (Häusler, 1881) † (new combination reference) Paralingulina longiscata (Terquem, 1870) † (new combination reference) Paralingulina minuta (Franke, 1936) † (new combination reference) Paralingulina paranodosaria Copestake & Johnson, 2014 † (original description) Paralingulina tenera subsp. collenoti (Terquem, 1866) † (new combination reference) Paralingulina tenera subsp. occidentalis (Berthelin, 1879) † (new combination reference) Paralingulina tenera subsp. pupa (Terquem, 1866) † (new combination reference) Paralingulina tenera subsp. subprismatica (Franke, 1936) † (new combination reference) Paralingulina tenera subsp. substriata (Nørvang, 1957) † (new combination reference) Paralingulina tenera subsp. tenuistriata (Nørvang, 1957) † (new combination reference) Paralingulina testudinaria (Franke, 1936) † (new combination reference) Planularia breoni (Terquem, 1864) † (new combination reference) Planularia pulchra (Terquem, 1866) † (new combination reference) Procerolagena lanceolata (Terquem, 1858) † (new combination reference) Prodentalina arbuscula (Terquem, 1866) † (new combination reference) Prodentalina bicornis (Terquem, 1870) † (new combination reference) Prodentalina breoni (Terquem, 1864) † (new combination reference) Prodentalina clavata (Terquem, 1858) † (new combination reference) Prodentalina crassa (Franke, 1936) † (new combination reference) Prodentalina crenata (Schwager, 1865) † (new combination reference) Prodentalina digitalis (Franke, 1913) † (new combination reference) Prodentalina glandulinoides (Franke, 1936) † (new combination reference) Prodentalina integra (Kübler & Zwingli, 1866) † (new combination reference) Prodentalina nodigera (Terquem & Berthelin, 1875) † (new combination reference) Prodentalina numismalis (Franke, 1936) † (new combination reference) Prodentalina oolithica (Terquem, 1870) † (new combination reference) Prodentalina parvula (Franke, 1936) † (new combination reference) Prodentalina paucicosta (Terquem, 1866) † (new combination reference) Prodentalina paucicurvata (Franke, 1936) † (new combination reference) Prodentalina perlucida (Terquem, 1862) † (new combination reference) Prodentalina pyriformis (Terquem, 1858) † (new combination reference) Prodentalina radicula (Terquem, 1866) † (new combination reference) Prodentalina sinemuriensis (Terquem, 1866) † (new combination reference) Prodentalina suboligostegia (Franke, 1936) † (new combination reference) Prodentalina teutoburgensis (Franke, 1936) † (new combination reference) Prodentalina torta (Terquem, 1858) † (new combination reference) Prodentalina tortilis (Franke, 1936) † (new combination reference) Prodentalina vasta (Franke, 1936) † (new combination reference) Prodentalina ventricosa (Franke, 1936) † (new combination reference) Prodentalina vetustissima (d'Orbigny, 1850) † (new combination reference) Reinholdella margarita subsp. dorsoplana Copestake & Johnson, 2014 † (original description) Reinholdella mochrasensis Copestake & Johnson, 2014 † (original description) Reinholdella pachyderma subsp. humilis Copestake & Johnson, 2014 † (original description) Reinholdella robusta Copestake & Johnson, 2014 † (original description) Reussoolina aphela (Tappan, 1955) † (new combination reference) Reussoolina lacrimaforma Copestake & Johnson, 2014 † (original description) Reussoolina laticosta (Terquem & Berthelin, 1875) † (new combination reference) Reussoolina minutissima (Kübler & Zwingli, 1870) † (new combination reference) Reussoolina ovata (Terquem, 1858) † (new combination reference) Semiinvoluta excelsa Copestake & Johnson, 2014 † (original description) Tubinella pseudoinornata Copestake & Johnson, 2014 † (original description) Vaginulina clausa (Terquem, 1868) † (new combination reference) Vaginulinopsis denticulatacarinata (Franke, 1936) † (new combination reference) Vaginulinopsis erzingensis (Neuweiler, 1959) † (new combination reference) Vaginulinopsis exarata (Terquem, 1866) † (new combination reference) Vaginulinopsis mediomatricorum (Ruget & Sigal, 1967) † (new combination reference) Verneuilinoides liasinus (Terquem & Berthelin, 1875) † (new combination reference) |