angle of the carapace was close to vertical, giving it a narrow profile when viewed from above.'

The head had a pair of large spherical stalked eyes, as well as a pair of upward-curling frontal appendages, which have a varying number of podomeres/segments, depending on the species. Most podomeres on the frontal appendages have upward-facing endite spines, with the number and placement of spines varying between species. The last podomere of the frontal appendage is a curved terminal claw.

The

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