Sekirov Dictionary

ptychopariid

adjective 2
noun 1
forms 1

adjective2

Of or relating to the order †Ptychopariida of trilobites.
Of the facial sutures of a trilobite, having a pattern in which they diverge slightly from the eyes and extend to the anterior border.

noun1

Any trilobite of the order †Ptychopariida.

forms

ptychopariids

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