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Fossil specimen : BGS GSM35321 – Holotype

Taxonomic Group

Kingdom Animalia

  Phylum Arthropoda

    Class Trilobita

      Order Corynexochida

Fossil Name Illaenus murchisoni Salter
Type Status Holotype
Name History

Illaenus murchisoni Salter

Registration No. GSM35321
Collector Survey
Donor or Associated Person Name not available
Held By British Geological Survey Logo British Geological Survey
Country Wales
Locality [Birdshill] Llandeilo
Grid Reference Not available
Rock Unit Ashgill Formation
Biozone Not available
Geological Age

Hirnantian Age (Ordovician Period) – Rawtheyan Stage (Ordovician Period) (443.8 – 447 Ma B.P.)


Salter 1867 Pal. Soc. Mon. Pages 201 - 202

Salter in Phillips + Salter Mem. Geol. Surv. Vol. 2 Part 1 pl. 5 fig 6

Stubblefield 1938 Summ. Prog. for 1936 Page 31

Available Images

High resolution photographs


2914 KB

Steroscopic photographs


3403 KB

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3D Scans

1: /BGS/GSM_35321

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