Phacopida

Adrisiops weugi

Order Phacopida / Suborder Phacopina / Superfamily Phacopoidea / Family Phacopidae

Emsian (Early Devonian)Morocco

Adrisiops weugi — photo 1 — Photo 1 · Holotype NHMM 2016 007 (Morocco; Viersen et al., 2017) Colour photograph of the holotype NHMM 2016 007 (from the website trilobitesdemarruecos.jimdofree.com, photograph provided by A. P. van Viersen)

Adrisiops weugi — photo 2 — Photo 2 · Holotype NHMM 2016 007 (Morocco; Viersen et al., 2017) Colour photograph of the holotype NHMM 2016 007 (from the website trilobitesdemarruecos.jimdofree.com, photograph provided by A. P. van Viersen)

Classification

Order Phacopida / Suborder Phacopina / Superfamily Phacopoidea / Family Phacopidae

Genus

Adrisiops Viersen, Holland & Koppka, 2017

Genus author

Viersen A.P. van, Holland D. & Koppka J.

Genus etymology

adrisio (Latin, smile) + ops (Greek, eye), from its vernacular name "smiley Phacops"

Species

A. weugi Viersen, Holland & Koppka, 2017

Species author

Viersen A.P. van, Holland D. & Koppka J.

Species etymology

Weug, from Andries Weug, the first to indicate the locality

Age

Emsian (Early Devonian)

Distribution

Morocco

Diagnosis

Cephalon parabolic. Glabella short, anterior part subsemicircular and slightly protruding, covered with large conical nodes; palpebral lobes with faint small nodes at the anterior ends; 19 rows of lenses, up to 6 lenses per row. Thorax of 11 segments; axis subequal in width to pleurae; axial rings with faint small nodes. Pygidial axis of 8 rings, 5 pairs of pleural ribs.

Remarks

This species is the type species of the genus Adrisiops; the distinctive curve of its anterior border looks like a smile.