Asaphida

Lonchodomas sp.

Order Asaphida / Superfamily Trinucleoidea / Family Raphiophoridae

Darriwilian (Middle Ordovician)Inner Mongolia

Lonchodomas sp. — photo 1 — Photo 1 · (Inner (Inner Mongolia; Levi) Mongolia; Pengcheng Jianke) (Inner Mongolia; Haiku Shilan De Chongchong)

Lonchodomas sp. — photo 2 — Photo 2 · (Inner (Inner Mongolia; Levi) Mongolia; Pengcheng Jianke) (Inner Mongolia; Haiku Shilan De Chongchong)

Lonchodomas sp. — photo 3 — Photo 3 · (Inner (Inner Mongolia; Levi) Mongolia; Pengcheng Jianke) (Inner Mongolia; Haiku Shilan De Chongchong)

Lonchodomas sp. — photo 4 — Photo 4 · (Inner (Inner Mongolia; Levi) Mongolia; Pengcheng Jianke) (Inner Mongolia; Haiku Shilan De Chongchong)

Lonchodomas sp. — photo 5 — Photo 5 · (Inner (Inner Mongolia; Levi) Mongolia; Pengcheng Jianke) (Inner Mongolia; Haiku Shilan De Chongchong)

Classification

Order Asaphida / Superfamily Trinucleoidea / Family Raphiophoridae

Genus

Lonchodomas Angelin, 1854

Genus author

Angelin N. P.

Genus etymology

lonch-, Greek, lance, spear

Species

Lonchodomas sp.

Species author

Species etymology

Age

Darriwilian (Middle Ordovician)

Distribution

Inner Mongolia

Diagnosis

Cephalon nearly equilateral triangular in outline; glabella spearhead-shaped, median ridge extended into an anterior spine longer than the cephalon. Thorax of 5 segments, axis narrower than pleurae; pleurae straight with deep pleural furrows, pleural ends flat. Pygidium semi-elliptical, wider than long; axis indistinct; border strongly deflected downward.