GB3D Type Fossils

 Home   The project   Search  About fossils Contributors Downloads Links Contact us

Fossil specimen : BGS Geol.Soc.Coll.6827 – Undifferentiated Type

Taxonomic Group

Kingdom Animalia

  Phylum Arthropoda

    Class Trilobita

      Order Asaphida

Fossil Name Basilicus tyrannus Murchison
Type Status Undifferentiated Type
Name History

Basilicus tyrannus Murchison

Asaphus tyrannus Murchison

Registration No. Geol.Soc.Coll.6827
Collector Earl Cawdor Coll.
Donor or Associated Person Geol. Soc. 1911
Held By British Geological Survey Logo British Geological Survey
Country Wales
Locality Llandeilo, Carmarthenshire
Grid Reference Not available
Rock Unit Llandeilo Rocks (Undifferentiated)
Biozone Not available
Geological Age

Caradoc Series (Ordovician Period) – Abereiddian Stage (Ordovician Period) (449 – 465.5 Ma B.P.)

[Closest ICS interval: Late Ordovician Epoch – Darriwilian Age ]


Fortey, 1980, Bull BM NH 34 no. 4 p.259 fig. 4a,b

Murchison 1839 "Silurian System" p.1839 pl.25, fig. 1

Available Images

High resolution photographs


3985 KB

Steroscopic photographs


3965 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