Undescribed Emeraldella Like Arthropod from Cambrian Utah

"similar to Burgess Shale"

Lamellipedia (Trilobitomorpha)

Phylum Arthropoda, Superclass Lamellipedia (sensu Hou & Bergström, 1997), Lamellipedia (Trilobitomorpha); Emeraldellidae; cf Emeraldella (?)

Geologic Time: Upper Middle Cambrian

Size: 27 mm

Fossil Site: Weeks Formation, House Range, Millard County, Utah

Description: This unusual specimen has trilobitomorph features, and has as yet not been described in the literature. It is thought to have affinities with the Burgess Shale genus Emeraldella. Notice that the pointed telson is present, a feature not always preserved with either the Trilobitomorphs or the Aglaspidids of the region. Notice too the strong segmentation evident in this part/counterpart example.

Hou & Bergström, 1997: Arthropods of the Lower Cambrian Chengjiang fauna, southwest China. --Fossils & Strata, Number 45, 22nd December 1997, pp. 1-116
Briggs D.E.G., and R.A. Robison. 1984. Exceptionally preserved non trilobite arthropods and Anomalocaris from the Middle Cambrian of Utah. University of Kansas Paleontological Contributions, Paper 111:1-24.

Also See: Utah Cambrian Explosion Fossils Trilobites Relatives

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