GB3D Type Fossils

 Home   The project   Search  About fossils Contributors Downloads Links Contact us

Fossil specimen : BGS GSM75226 – Holotype

Taxonomic Group

Kingdom Animalia

  Phylum Arthropoda

    Class Trilobita

      Order Asaphida

Fossil Name Marrolithus primus Williams
Type Status Holotype
Name History

Marrolithus primus Williams

Registration No. GSM75226
Collector Name not available
Donor or Associated Person A.Williams 1947
Held By British Geological Survey Logo British Geological Survey
Country Wales
Locality Golden Grove Mansion, Llandeilo
Grid Reference Not available
Rock Unit Llanvirn Rocks (Undifferentiated)
Biozone Not available
Geological Age

Abereiddian Stage (Ordovician Period) (460.5 – 465.5 Ma B.P.)

[Closest ICS interval: Darriwilian Age ]


Whittard, WF, 1956, Pal. Soc. Mon. "Ordovician Trilobites of the Shelve Inlier W Shropshire" p.53-54 VII fig. 1

Williams 1948 Geol. Mag p.78 7

Available Images

High resolution photographs


2807 KB


4426 KB


4957 KB


3746 KB

Steroscopic photographs


4638 KB


5103 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