Leanchoillid Great Appendage Arthropod from Great Ordovician Radiation

Part and Counterpart Fossil Specimen


Phylum Arthropoda

Geological Time: Lower Ordovician

Size: Fossil is 30 mm long by 12 mm wide (with limbs) on a 170 mm by 150 mm and 175 mm by 165 mm matrix pair

Fossil Site: Upper Fezouata Formation, Zagora, Morocco

Code: 16214

Price: $595.00

Ordovician Great Appendage Arthropod FossilDescription: The Fezouata Formation contains a diverse fauna from the Lower Ordovician, and some are thought to be relict examples of the more well-known Cambrian Explosion of the Buress Shale of Canada and the Chengjiang Biota of China. This unusual arthropod is thought to be related to Leanchoilia. The specimen is a member of the “great appendage arthropods” better known from the Burgess Shale Fauna. This is a truly exceptional specimen, showing detail in both part and counterpart, particularly to the segmentation of the body and the swimming appendages. Note also a trace of the great appendage and the lanceolate telson with a medial ridge, characteristics of the Leanchoiliids. This one is currently undergoing scientific description.

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Ordovician Great Appendage Arthropod Fossil

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