Redlichia sp. Trilobite
Trilobite Order Redlichiida, Family Redlichiidae
Geological Time: Early/Middle Cambrian
Size (25.4mm=1 inch): 30 mm across by 38 mm long on a 50 mm by 35 mm matrix
Fossil Site: Guanshan Fauna, Lower most part of Wulongqing Formation, Caijiachong Valley, Yieyatoung, Gangtoucun Village, Xiamacun Town, Kunming City, Yunnan - Just above the Chengjiang Maotianshan Shales
Fossil Code: CJF1012
Price: $150.00
 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. Missing the tip of the left genal , it is a negative example from early in the Cambrian Explosion. |
