Trilobita - Proetida - Aulacopleuridae

Alternative combination: Otarion isoplates

Full reference: R. P. Tripp. 1954. Caradocian trilobites from the mudstones at Craighead Quarry, near Girvan, Ayrshire. Transactions of the Royal Society of Edinburgh 62(3):655-693

Belongs to Harpidella according to R. P. Tripp 1980

See also Tripp 1954

Sister taxa: Harpidella (Harpidella), Harpidella beggi, Harpidella megalops, Harpidella minima, Harpidella occidentalis, Harpidella tridens

Type specimen: A.3763, a cephalon/head (cranidium). Its type locality is Craighead Quarry, which is in a Caradoc marine mudstone in the Craighead Formation of the United Kingdom.

Distribution: found only at Craighead Quarry

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Specimen images are retrieved through the ePANDDA API.