[2][3] The generic name, Ogygiocarella, refers to "Ogygia", the seventh daughter of Amphion and Niobe, which name is combined with "-care-", from the Greek "akares", meaning short, and finally "-ella", the diminutive form.

Edward Lhwyd[4] published in 1698 in The Philosophical Transactions of the Royal Society, the oldest scientific journal in the English language, part of his letter “Concerning Several Regularly Figured Stones Lately Found by Him", that was accompanied by a page of etchings of fossils.

[5] One of his etchings figured a trilobite he found near Llandeilo, probably on the grounds of Lord Dynefor's castle, he described as “… the skeleton of some flat Fish …".

The headshield (or cephalon) is 2½× wider than long, and of equal size as the tailshield (or pygidium), a state called isopygeous.

The backcorners of the cephalon end in so-called genal spines that stick backwards approximately to the 6th thorax segment.