Museum Redlichia mansuyi Guanshan Fauna Trilobite

with Preserved Antennae

Redlichia mansuyi

Trilobite Order Redlichiida, Family Redlichiidae

Geological Time: Early/Middle Cambrian

Size (25.4 mm = 1 inch): Trilobite is 37 mm across by 44 mm long (with spines) with 10 mm antennae on a 92 mm by 92 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, similar to, and just above the Chengjiang Biota

Code: CF441

Price: Sold

Trilobite AntennaDescription: 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. This is an exceptionally large example which has the antennae preserved, a specimen destined to be a showcase example for some discerning collector.

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