GB3D Type Fossils

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Fossil specimen : SM A 16691 – Lectotype

Taxonomic Group

Kingdom Animalia

  Phylum Arthropoda

    Class Trilobita

      Order Asaphida

Fossil Name Homalopteon radians (M'coy), 1849
Type Status Lectotype
Name History

Homalopteon radians (M'coy), 1849: Lectotype

Barrandia radians (McCoy): Holotype

Barrandia (Homalopteon) radians (McCoy)

Barrandia radians (McCoy)

Ogygia radians McCoy: Holotype

Ogygia radians McCoy

Registration No. A 16691
Collector Name not available
Donor or Associated Person Name not available
Held By Sedgwick Museum of Earth Sciences Logo Sedgwick Museum of Earth Sciences, University of Cambridge
Country Wales
Locality Pen Cerrig, Builth, Pen-cerig Lake, Radnorshire, Wales
Grid Reference Not available
Rock Unit Glyptograptus teretiusculus Shale (near top)
Biozone gracilis
Geological Age

Wenlock Epoch (Silurian Period) – Llandeilian Stage (Ordovician Period) (427.4 – 460.5 Ma B.P.)


Hughes 1979. Bulletin of the British Museum (Natural History). Geology vol. 32 (6): p.164 fig.143

McCoy 1849 b. Annals and Magazine of Natural History ser. 2 vol. iv (1): p.408

McCoy 1851 a. A synopsis of the classification of the British Palaeozoic rocks with a systematic description of the British Palaeozoic fossils (2): p.149 pl. i f figs.2, 2 a

McCoy 1854 a. Contributions to British Palaeontology (1): p.147

Salter 1873. Catalogue of the Cambrian and Silurian fossils contained in the Geological Museum of the University of Cambridge (3): p.33

Whittard, W.F. 1961. The Ordovician trilobites of the Shelve Inlier, West Shropshire Palaeontographical Society Monographs vol. 17 (5): p.227 pl. xxxiii fig.10

Woods, H. 1891. Catalogue of the Type Fossils in the Woodwardian Museum, Cambridge. Henry Woods with preface by T. McKenny Hughes CUP. 180+xiv SPL: II. 16 (4): p.140

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