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Fossil specimen : BGS GSM14015 – Syntype

Taxonomic Group

Kingdom Animalia

  Phylum Arthropoda

    Class Trilobita

      Order Asaphida

Fossil Name Cryptolithus latus Portlock
Type Status Syntype
Name History

Cryptolithus latus Portlock

Trinucleus concentricus var s. Portlock

Trinucleus caractaci Murchison

Trinucleus var s. Portlock

Trinucleus concentricus Eaton

Trinucleus (Cryptolithus) portlockii Salter

Registration No. GSM14015
Collector Portlock
Donor or Associated Person Name not available
Held By British Geological Survey Logo British Geological Survey
Country Northern Ireland
Locality Desertcreight,Tyrone
Grid Reference Not available
Rock Unit Caradoc Rocks (Undifferentiated)
Biozone Not available
Geological Age

Caradoc Series (Ordovician Period) (449 – 458.4 Ma B.P.)

[Closest ICS interval: Late Ordovician Epoch ]


Portlock,1843, Geol. Rep. Londonderry etc. as [Trinucleus caractaci Murchison]pg. 262 pl. 1B,fig. 5a

Reed,1952, Proc. Roy. Acad,55,B,no. 3,pp.99-100

Salter,1853,Dec.VII, Mem. Geol. Surv. pg. 6 as [T. concentricus var. s. Portlockii]

Available Images

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4297 KB

Steroscopic photographs


4592 KB

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3D Scans

1: bracket /BGS/GSM_14015

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