Psychopyge
praestans
Trilobites
Order
Phacopida, Superfamily Acastoidea, Family Acastidae
Geological
Time: Uppermost Emsian Stage Early to Middle Devonian Transition
Size (25.4
mm = 1 inch): 85 mm long (overall tip of rostrum to tip of pygidial spines)
by 43 mm wide at genals on a 120 by 80 mm matrix
Fossil Site:
Foum Ziguid, Zagora , Morocco
Code: 18022
Price: Sold
 Description:
This trilobite is a rare member of the Order Phacopida, Family Acastidae
from the Devonian deposits of Foum Ziguid, Morocco first described
in 2001 as Psychopyge praestans. Psychopyge
praestans is an unusual member of the genus in that it displays
a distinctive forked rostrum. This is a natural, not pathological
trait of this species. While I have seen them pictured in publications,
this is only the SECOND I have been able to offer. Notice the many
pustules, intrapleural nodes, and fine eye facets on this large
specimen, one that is a full one third larger than the only other
example I have been able to secure.
Also
see this Museum grade Psychopyge
termierorum from Ofaten and a Psychopyge
elegans from Djebel Issoumour.
Reference: Palaeontographica
Canadiana, No. 25, 2006, pp 31-33
and 112-117. |
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