GB3D Type Fossils

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Fossil specimen : SM A 236 – Lectotype

Taxonomic Group

Kingdom Animalia

  Phylum Arthropoda

    Class Trilobita

      Order Agnostida

Fossil Name Ptychagnostus (Ptychagnostus) triangulatus (Illing)
Type Status Lectotype
Name History

Ptychagnostus (Ptychagnostus) triangulatus (Illing): Lectotype

Agnostus triangulatus Illing: Undifferentiated Type

Registration No. A 236
Collector Name not available
Donor or Associated Person Name not available
Held By Sedgwick Museum of Earth Sciences Logo Sedgwick Museum of Earth Sciences
Country England
Locality Hartshill Hayes, Warwickshire, England
Grid Reference Not available
Rock Unit Stockingford Shale
Biozone Paradoxides hicksi
Geological Age

Tremadoc Series (Ordovician Period) – Comley Series (Cambrian Period) (478.6 – 528 Ma B.P.)

[Closest ICS interval: Tremadocian Age – Terreneuvian Epoch ]


Illing, V.C. 1916 for 1915. Quarterly Journal of the Geological Society of London vol. lxxi (1): p.412 pl.30 fig.8

Rushton, A.W.A. 1979. Alcheringa vol. 3 (2): p.53 fig.5f

Available Images

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