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Thaleops depressicapitata

Trilobita - Corynexochida - Illaenidae

Illaenus depressicapitatus was named by Bradley (1930). Its type specimen is UC 28895, a cephalon/head (exfoliated cranidia), and it is a 3D body fossil.

It was recombined as Thaleops depressicapitata by Amati and Westrop (2004).

Synonymy list
YearName and author
1930Illaenus depressicapitatus Bradley pp. 252 - 253 figs. pl. 28 figs 11–14
2004Thaleops depressicapitata Amati and Westrop pp. 231 - 236 figs. Pl. 10, figs 2–4, Pl. 11, Pl. 12, Pl. 13, figs 1–2

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EubilateriaAx 1987
phylumArthropodaLatreille 1829
classTrilobitaWalch 1771
orderCorynexochidaKobayashi 1935
familyIllaenidaeHawle and Corda 1847
genusThaleopsConrad 1843

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

L. Amati and S. R. Westrop 2004A species of Thaleops with strong longitudinal convexity. Muscle scar attachment sites well defined on internal moulds as two longitudinal ridges along the lateral margins of the glabella with a shallow depression between. Relict segmentation present on ventral surface of pygidial axis. Anterior margin of pygidial doublure with second, smaller pair of forward projections between larger pair of forward projections on either side of axis.