Asaphus
cornutus
Trilobite
Order Asaphida, Superfamily Asaphoidea, Family Asaphidae
Geologic
Time: Middle Ordovician Asery Horizon
Size: mm
(25.4mm=1 inch): 33 mm long (curve measure) by 23 mm wide on an 85 by
80 mm matrix
Location: Wolchow
River Region, St Petersburg, Russia
Code: RUT921
Price: $95.00
- sold
 Description:
A well-inflated example of a medium-eyestalked member of the Asaphidae,
this is Asaphus cornutus. The region in which these
trilobites lived was subject to dramatic changes in salinity and
turbidity, and the trilobites were able to make rapid (geologically
speaking) evolutionary adjustments. These adjustments were thought
to be able to allow them to see both predator and prey more easily.
This taxon derives its species name cornutus from the Latin for
horned, referring to the eyestalks.
Also
see: Russian
Trilobites
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