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Ampyx compactus

Trilobita - Trinucleida - Raphiophoridae

Taxonomy
Ampyx compactus was named by Ross and Barnes (1967) [Paratypes: USNM 145813-5.]. Its type specimen is USNM 145812, a cephalon/head (cranidium), and it is a 3D body fossil.

Sister species lacking formal opinion data
A. nitidus, A. ouralti, A. pater, A. repulsus