GB3D Type Fossils

 Home   The project   Search  About fossils Contributors Downloads Links Contact us

Fossil specimen : SM A 568 – Holotype

Taxonomic Group

Kingdom Animalia

  Phylum Arthropoda

    Class Trilobita

      Order Asaphida

Fossil Name Niobina davidis Lake
Type Status Holotype
Name History

Niobina davidis Lake: Holotype

Ogygia scutatrix Salter

Ogygia scutatrix Salter

Registration No. A 568
Collector Homfray, D. 1875
Donor or Associated Person Name not available
Held By Sedgwick Museum of Earth Sciences Logo Sedgwick Museum of Earth Sciences, University of Cambridge
Country Wales
Locality Tuhwntirbwlch (quarry), Tuntir-y-bwlch (quarry), Tu-hwnt-yr-bwlch (quarry), Portmadoc, Caernarvonshire, Wales
Grid Reference Not available
Rock Unit Middle Tremadoc
Biozone Not available
Geological Age

Tremadoc Series (Ordovician Period) (477.7 – 485.4 Ma B.P.)

[Closest ICS interval: Tremadocian Age ]


Lake 1943. Geological Magazine vol. lxxx (3): p.139 pl. vii figs.1-3

Lake 1944. A monograph of the British Cambrian Trilobites Palaeontographical Society Monographs (4): p.334 pl. xlvii figs.1, 1 a

Available Images

High resolution photographs


5979 KB


4658 KB

Steroscopic photographs


6581 KB

View these images in your web browser using our JPEG2000 viewer. Zoom in and out and pan around in high resolution. Requires JavaScript to be enabled.

Download these images as high resolution JPEG2000 files. You may need to use image-editing software to view these files.

click image or here to close