Anomalocaris
cf saron
Phylum Uncertain,
Anomalocarididae
Geological
Time: Early Middle Cambrian
Size: Anomalocaris
fossil is 28 mm long (curve measure) on a 170 mm by 85 mm matrix
Fossil Site:
Pioche Formation, Comet Shale Member, Eokochaspis nodosa subzone, Lincoln
County Nevada
Fossil Code:
STF34
Price: Sold
|  Description:
This is the grasping arm of one of the “Terrors Of The Cambrian”
known as Anomalocaris. The members of this group of enigmatic creatures
are known from Asia, Australia, Europe, and North America, and are
thought by many to be closely allied with the Arthropda, a position
not held by all researchers. The spiniferous grasping appendages
are strongly suggestive of its carnivorous habits; some trilobites
from Utah bear evidence of bite marks that have been attributed
to its near relative Anomalocaris nathorsti. This example comes
from a soft-bodied preservation site known for some ten years. Two
species are currently known; A. pennsylvanica and A. cf saron. A.
Both horizons are somewhat older than the celebrated Burgess Shale
of British Columbia. Also see a complete Anomalocaris
fossil.
Reference:
Journal of Paleontology, 77 (4), 2003, pp 674-690.
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