Odaraia
alata
Phylum
Arthropoda, Family Odariidae
Geological
Time: Early Cambrian, (~520 million years ago)
Size (25.4
mm = 1 inch): Fossil is 76 mm overall including eyes, body 33 mm deep
on a 135 mm by 63 mm matrix
Fossil Site:
Stephen Formation, Burgess Shale, Burgess Pass, British Columbia, Canada
Fossil Code:
JH40
Price: $16,495.00
Description:
One of the most unusual of Burgess Shale arthropods is Odaraia
alata. It had an enormous pair of eyes which presumably allowed
it to locate prey items and avoid predators. The tubular shelled
body, which was open on both ends, would have allowed it to capture
floating prey items. It was an active swimmer as attested by
the flukes in the telson. It is thought to have swum upside-down
as shown in the photographs in order to minimize drag. The restoration
shows it in the upright posture simply to make it easier to see.
As in all Burgess specimens, this one has a reflective plane.
When held at the proper angle, the reflective surface is seen
as in the photographs. What makes this one unusual is the fact
that the eyes themselves are roughly twice as bright as the body.
This wonderful example shows incredible detail for a specimen
more than a HALF BILLION years of age. Notice in addition to
the eyes the outline of the tubular shell, the vertical tail
fluke, and the hint of the limbs with. Coming from the famous
Burgess Shale Fauna, this is a highly-desirable member which
will make a fine addition to any collection of Cambrian Explosion
fossils. It is also quite rare: for each 1000 Burgess specimens
only 6 are Odaraia based upon a recent census of material housed
in museum collections; even fewer are as complete as this excellent
example. Since the location is now a World Heritage site only
specimens from old collections such as this are available. I
have never seen an example available commercially before.
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