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Fossil specimen : BGS GSM24588 – Syntype

Taxonomic Group

Kingdom Animalia

  Phylum Arthropoda

    Class Trilobita

      Order Asaphida

Fossil Name Marrolithus favus Salter
Type Status Syntype
Name History

Marrolithus favus Salter

Trinucleus concentricus var favus Eaton

Registration No. GSM24588
Collector old collection
Donor or Associated Person Name not available
Held By British Geological Survey Logo British Geological Survey
Country Wales
Locality Narberth, Pembrokeshire
Grid Reference Not available
Rock Unit Llandeilo Flags Formation
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 ]


? Mem Geol. Surv. vol II pt.I 1848 IX, fig. 3

Mem Geol Surv Vol II IX fig. 3

Salter, 1866, Mem Geol Surv Vol 3 XIII, fig. 9

Stubblefield 1938 Sum. Prog. Geol. Survey for 1936 part II p.36

Whittard, WF, 1956, Pal. Soc. Mon. "Ordovician Trilobites of the Shelve Inlier W Shropshire" p.55-57 VII, fig.7

Williams 1948 Geol. Mag p.70-72

Available Images

High resolution photographs


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Steroscopic photographs


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