Rare Olenoides Trilobite from Kaili Biota

Olenoides sp

Corynexochida, Family Redlichiidae

Geological Time: Early Middle Cambrian

Size (25.4 mm = 1 inch): Fossil is 9 mm across by 16 mm long on a 28 mm by 37 mm matrix

Fossil Site: Kaili Formation, Maiobanpo Section, Taijiang County, Kaili, Guizhou Province, China

Code: KB129

Price: Sold


OlenoidesDescription: The Kaili Biota of Guiznou Province China, like the fantastic Chengjiang and Burgess Shale Fauna, preserve some of the earliest radiations of complex life known on the planet. The formation is some 220 m in thickness and spans the Late Early to Early Middle Cambrian. As such it is intermediate in age between the Changjiang and Burgess Shale Faunas. Representatives of some 110 genera are known, representing 11 phyla. The Kaili Biota includes both soft-bodied and skeletonized animals, and is dominated by trilobites, with eocinoids as the second most common fossil. It shares roughly 30 genera in common with Chengjiang and nearly 40 with the Burgess Shale. The presence of Burgess Shale–like fauna over a large part of southwestern China shows that the faunal community was quite cosmopolitan in nature, indicating that preservation was more of a factor in finding these concentrations of animals than was the existence of isolated communities suitable for harboring these myriad life forms.

This trilobite is a member of the genus Olenoides. They are better known from the Burgess shale and the western United States (Nevada and Utah). This is the first and only example I have had.

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Olenoides

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