GB3D Type Fossils

 Home   The project   Search  About fossils Contributors Downloads Links Contact us

Fossil specimen : BGS GSM35374 – Undifferentiated Type

Taxonomic Group

Kingdom Animalia

  Phylum Arthropoda

    Class Trilobita

      Order Phacopida

Fossil Name Xylabion gelasinosum (Portlock)
Type Status Undifferentiated Type
Name History

Xylabion gelasinosum (Portlock)

Cheirurus gelasinosus Portlock

Arges planospinosus Portlock

Cheirurus (Amphion) gelasinosus Portlock

Registration No. GSM35374
Collector Name not available
Donor or Associated Person Portlock Coll
Held By British Geological Survey Logo British Geological Survey
Country Northern Ireland
Locality 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 ]


Lane 1971 Pal Soc Mon p.41 pl 2 fig 12

Portlock 1843 Geol of Londonderry and parts of Tyrone and Fernanagh p.289 pl 3 fig 4a

Salter, 1864 Mon Pal Soc p.71 pl 5 fig 8

Available Images

High resolution photographs


6184 KB


3321 KB

Steroscopic photographs


7328 KB


3026 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