GB3D Type Fossils

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Fossil specimen : BGS GSM75207 – Paratype

Taxonomic Group

Kingdom Animalia

  Phylum Arthropoda

    Class Trilobita

      Order Asaphida

Fossil Name Marrolithoides simplex Williams
Type Status Paratype
Name History

Marrolithoides simplex Williams

Registration No. GSM75207
Collector Name not available
Donor or Associated Person A Williams 1947
Held By British Geological Survey Logo British Geological Survey
Country Wales
Locality Llangadock quarry
Grid Reference Not available
Rock Unit Llandeilo Flags Formation
Biozone Not available
Geological Age

Caradoc Series (Ordovician Period) – Abereiddian Stage (Ordovician Period) (451 – 467 Ma B.P.)

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


Whittard, WF, 1956, Pal. Soc. Mon. "Ordovician Trilobites of the Shelve Inlier W Shropshire" p.65

Williams A Geol Mag 1948 p.79 pl. 6 fig 5

Available Images

High resolution photographs


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Steroscopic photographs


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