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Derbyia dorsoplana

Strophomenata - Orthotetida - Derbyiidae

Taxonomy
Derbyia dorsoplana was named by Diener (1915). It is a 3D body fossil. Its type locality is 2 miles north of Eishmakam, which is in a Bashkirian marine shale in the Fenestella Shales Formation of India.

Sister species lacking formal opinion data
D. ciscoensis, D. deercreekensis, D. kansasensis, D. plattsmouthensis, D. robusta