Cyphaspis walteri
Trilobites Order Proetida, Family Otarionidae
Gerastos sp
Trilobites Order Proetida, Family Proetidae
Geological Time: Middle Devonian
Size: Cyphaspis: 30-37 mm long, 20-22 mm across (with spines). Gerastos: 20 mm by 10 mm Matrix: 120 mm by 185 mm.
Fossil Site: Bou Dib Formation, El Mrakib, Ma’der, Morocco
Fossil Code: 18123
Price: Sold
 Description:
This plate displays three fine examples of a trilobite found in the
Middle Devonian deposits of El Mrakib near Ma’der, Morocco.
This taxon has a distinctive pair of cephalic spines, the source of
the common name. It finally received scientific description in 2014,
and is now known as Cyphaspis walteri. The pustulose glabella and
fine eyestalks are well displayed while the cephalic and axial spines
have been prepared free of matrix, a most labor-intensive effort,
one I am sure you will agree was worth it. The final trilobite is
a member of the genus Gerastos. Also
see this Cyphaspis
walteri with the genals prepared freestanding.
Reference: Geologica Belgica (2014), 17/3-4, pp 263-275. |
