Redlichia
mansuyi
Trilobite
Order Redlichiida, Family Redlichiidae
Geological
Time: Early/Middle Cambrian
Size (25.4
mm = 1 inch): Trilobite is 23 mm across by 23 mm long (with spines)
on a 110 mm by 90 mm matrix
Fossil Site:
Guanshan Fauna, Lower most part of Wulongqing Formation, Caijiachong
Valley, Yieyatoung, Gangtoucun Village, Xiamacun Town, Kunming City,
Yunnan Province, China - Near and similar to the Chengjiang
Biota
Code: CF425
Price: Sold
|  Description:
This fine trilobite specimen comes from what has been termed
the “Guanshan Fauna”, found in the Wulongqing Formation.
The Guanshan Fauna shares many genera with the slightly older
Chengjiang Biota, but differs at the species level. With the
discovery of the Chengjiang Biota in 1984 a window on the Cambrain
Explosion in China was opened. The diversity of soft-tissue fossils
is astonishing: algae, medusiforms, sponges, priapulids, annelid
like worms, echinoderms, arthropods (including trilobites), hemichordates,
chordates, and the first agnathan fish make up just a small fraction
of the total. Numerous problematic forms are known as well, some
of which may have represented failed attempts at diversity that
did not persist to the present day.
This
trilobite is a Redlichia species, the patronymic genus of the
Family Redlichiida. Trilobites from this timeframe were members
of the Redlichiida, Ptychopariida, Corynexochida, and the Agnostida,
with the balance of the orders appearing later in time.
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