GB3D Type Fossils

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Fossil specimen : SM A 29951 – Lectotype

Taxonomy
Taxonomic Group

Kingdom Animalia

  Phylum Arthropoda

    Class Trilobita

      Order Lichida

Fossil Name Primaspis semievoluta (Reed)
Type Status Lectotype
Name History

Primaspis semievoluta (Reed): Lectotype

Acidaspis semievoluta Reed: Syntype

Provenance
Registration No. A 29951
Collector Name not available
Donor or Associated Person Turnbull, V.M.
Held By Sedgwick Museum of Earth Sciences Logo Sedgwick Museum of Earth Sciences, University of Cambridge
Comments
Location
Country England
Locality Alston (road cutting), Melmerby, Cumberland, England
Grid Reference Not available
Stratigraphy
Rock Unit Lower Melmerby Bed (matrix)
Biozone Not available
Geological Age

Cheneyan Stage (Ordovician Period) (451.5 – 452.75 Ma B.P.)

[Closest ICS interval: Katian Age ]

References
References

Dean 1962 a. Bulletin of the British Museum (Natural History). Geology vol. 7 (2): p.122 pl.17 figs.3, 13

Reed, F.R.C. 1910 a. Geological Magazine n.s. dec. v, vol vii (1): pp.211, 214 pl. xvii fig.1

Available Images

High resolution photographs

/CAMSM/P869092.jp2

671 KB

/CAMSM/P869095.jp2

4056 KB

Steroscopic photographs

/CAMSM/P871112.jp2

6563 KB


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