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Fossil specimen : BGS GSM8710 – Lectotype

Taxonomic Group

Kingdom Animalia

  Phylum Arthropoda

    Class Trilobita

      Order Agnostida

Fossil Name Geragnostus maccoyi Salter
Type Status Lectotype
Name History

Geragnostus maccoyi Salter

Agnostus maccoyi Salter

Agnostus pisiformis Murchison

Registration No. GSM8710
Collector Sir M de la Beche
Donor or Associated Person Stokes
Held By British Geological Survey Logo British Geological Survey
Country Wales
Locality Builth
Grid Reference Not available
Rock Unit Llandeilo Rocks (Undifferentiated)
Biozone Not available
Geological Age

Caradoc Series (Ordovician Period) – Abereiddian Stage (Ordovician Period) (449 – 465.5 Ma B.P.)

[Closest ICS interval: Late Ordovician Epoch – Darriwilian Age ]


Murchison, 1837,Sil. Syst 25, fig. 6 4

Salter 1866 Mem Geol Surv III XIII fig. 8

Whittard, WF, 1955, Pal. Soc. Mon. "Ordovician Trilobites of the Shelve Inlier W Shropshire" 1, fig. 5

syntype 1864, Mem Geol. Surv. Dec. XI 1, fig 7,7a

Available Images

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