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Fossil specimen : SM A 11913 – Lectotype

Taxonomic Group

Kingdom Animalia

  Phylum Arthropoda

    Class Trilobita

      Order Proetida

Fossil Name Toernquistia nicholsoni (Reed), 1896
Type Status Lectotype
Name History

Toernquistia nicholsoni (Reed), 1896: Lectotype

Tornquistia nicholsoni Reed: Lectotype

Cyphaspis (Tornquistia) nicholsoni Reed: Syntype

Cyphaspis triradiatus (Törnquist)

Registration No. A 11913
Collector Name not available
Donor or Associated Person Nicholson, Henry Alleyne (1844-1899)
Held By Sedgwick Museum of Earth Sciences Logo Sedgwick Museum of Earth Sciences, University of Cambridge
Country England
Locality Keisley, Westmorland, England
Grid Reference Not available
Rock Unit Keisley Limestone
Biozone Not available
Geological Age

Ashgill Series (Ordovician Period) (443.8 – 449 Ma B.P.)

[Closest ICS interval: Late Ordovician Epoch ]


Dean 1974. The trilobites of the Chair of Kildare limestone (Upper Ordovician) of Eastern Ireland Palaeontographical Society Monographs (4): p.65

Marr & Nicholson 1891. Quarterly Journal of the Geological Society of London vol. xlvii (1): p.507

Reed, F.R.C. 1896. Quarterly Journal of the Geological Society of London vol. lii (2): p.433 pl. xxi fig.3

Whittington, H.B. 1950 b. Journal of Paleontology vol. xxiv (3): p.561 pl.75 figs.8, 13,14

Available Images

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