GB3D Type Fossils

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Fossil specimen : SM A 16747 – Lectotype

Taxonomic Group

Kingdom Animalia

  Phylum Arthropoda

    Class Trilobita

      Order Asaphida

Fossil Name Dionide atra Salter
Type Status Lectotype
Name History

Dionide atra Salter: Lectotype

Dionide atra Salter

Dionide atra Salter

Dionide atra Salter: Syntype

Registration No. A 16747
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 Ty Obry, Portmadoc, Garth, Caernarvonshire, Wales
Grid Reference Not available
Rock Unit Ty-Obry Bed
Biozone Not available
Geological Age

Llandeilian Stage (Ordovician Period) (458.4 – 460.5 Ma B.P.)

[Closest ICS interval: Darriwilian Age ]


Reed, F.R.C. 1912. Geological Magazine n.s. dec. v, vol. ix (3): p.200 pl. xi fig.1

Salter 1866 b. The geology of North Wales Memoirs of the Geological Survey of England and Wales vol. iii (1st edition) (1): p.321 pl.11 a fig.9?

Salter 1873. Catalogue of the Cambrian and Silurian fossils contained in the Geological Museum of the University of Cambridge (2): p.22

Whittington, H.B. 1952. Journal of Paleontology vol. xxvi (4): p.7 pl. ii fig.9

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