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Tretaspis radialis and allied species trilobita


, : Tretaspis radialis and allied species trilobita. Geological Magazine 118(3): 289-296

Recently discovered specimens from the Portrane Limestone Formation of eastern Ireland are regarded as topotypes of T. radialis Lamont and used to further characterize the species. The features shown by these specimens confirm the close relationship between T. radialis and forms from Zones 2-4 of the Cautleyan Stage of northern England and Wales [UK] and allow its differentiation from T. moeldenensis Cave and from another related form of low Rawtheyan age which is here erected as a new species, T. caritus sp. nov.


Accession: 006839656

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Related references

Price, D., 1981: Tretaspis radialis Lamont and allied species (Trilobita). Recently discovered specimens from the Portrane Limestone Formation of eastern Ireland are regarded as topotypes of T. radialis Lamont and used to further characterize the species. The features shown by these specimens confirm the close relationsh...

Chlupac Ivo, 1952: Novy druh rodu Tretaspis McCoy (Trilobita) z ceskeho ordoviku; a new species of the genus Tretaspis McCoy (Trilobita) from the Ordovician of Bohemia. Describes the trilobite Tretaspis novaki n.sp. from upper Ordovician localities in Central Bohemia, Czechoslovakia.

Price, D., 1977: Species of tretaspis trilobita from the ashgill series in wales. Nine species of Tretaspis are recognized from various horizons of the Ashgill Series in Wales. T. colliquia Ingham is regarded as a sub-species of T. moeldenensis Cave [T. moeldenensis colliquia ]. Four populations of Tretaspis are placed in T. mo...

Chlupac, I., 1952: Novy druh rodu Tretaspis McCoy (Trilobita) z ceskeho ordoviku. Sborn Ust. csl: 183-191

Opinion 505., 1958: Validation under the Plenary Powers of the generic names Trinucleus Murchison, 1839 and Tretaspis McCoy, 1849 (Class Trilobita). Opinions rendered by the International Commission on Zoological Nomenclature, 188: 159-176

Stubblefield, C.J.; Whittington, H.B., 1956: Proposed use of the Plenary Powers to validate the generic names Trinucleus Murchison, 1839, and Tretaspis McCoy, 1849 (Class Trilobita). Bulletin of Zoological Nomenclature, 122: 49-54

Cave R., 1960: A new species of Tretaspis from south Wales. "Tretaspis moeldenensis sp. nov. from 'Bala limestone' of Carmarthenshire is described. Almost identical forms previously referred to T. kiaeri Stoermer and T. aff. kiaeri occur in the Calymene beds of northern England. The trilobit...

Chlupa, Ivo, 1952: A new species of the genus Tretaspis from the Ordovician of Bohemia. T. noaki is described in detail, and the associated Caradocian fauna, trilobites, mollusks, brachiopods, etc., is listed. [Pages 200-207 are an English translation of the preceding pages by Dr. G. Hort.].

Schraut, Gunnar., 2000: A new species of Scabrella Trilobita from the Lower Devonian of Morocco Eine neue Art von Scabrella Trilobita aus dem hohen Unter-Devon von Marokko. New and well preserved shelly material of a new species of Scabrella WENNDORF 1990 from the Lower Devonian of Morocco is described. It was found in the Issimour section, near Alnif, within layers of limestone of late Emsian age as dated by trilobi...

Gozalo, R..; Linan, E.., 1996: New species of Conocoryphidae Trilobita Middle Cambrian of the Iberian Chains NE Spain Nueva especie de Conocoryphidae Trilobita Cambrico Medio de la Cadenas Ibericas NE de Espana. Revista Espanola de Paleontologia. Julio; 112: 247-250