Asaphida

Seleneceme bashanense

Order Asaphida / Superfamily Trinucleoidea / Family Alsataspididae

Floian (Early Ordovician)Shaanxi

Seleneceme bashanense — photo 1 — Photo 1 · Holotype Sh008-b (Shaanxi; Deng Sicheng et al. Literature specimen (Shaanxi; Deng 1986) Sicheng et al. 1986) Literature specimen (Wang et al., 2023)

Seleneceme bashanense — photo 2 — Photo 2 · Holotype Sh008-b (Shaanxi; Deng Sicheng et al. Literature specimen (Shaanxi; Deng 1986) Sicheng et al. 1986) Literature specimen (Wang et al., 2023)

Seleneceme bashanense — photo 3 — Photo 3 · Holotype Sh008-b (Shaanxi; Deng Sicheng et al. Literature specimen (Shaanxi; Deng 1986) Sicheng et al. 1986) Literature specimen (Wang et al., 2023)

Classification

Order Asaphida / Superfamily Trinucleoidea / Family Alsataspididae

Genus

Seleneceme Clark, 1924

Genus author

Clark T. H.

Genus etymology

None

Species

S. bashanense (Deng & Zhao, 1986)

Species author

Deng Sicheng, Zhao Liancheng

Species etymology

Bashan, the Daba Mountains, Shaanxi

Age

Floian (Early Ordovician)

Distribution

Shaanxi

Synonyms

Caputrotundum bashanense

Diagnosis

Cephalon wide with a long preglabellar spine; glabella subcircular, divided into three parts by two longitudinal glabellar furrows; occipital ring short and small; preglabellar field long with a preglabellar furrow; fixigenae wide; librigenae narrow with extremely long genal spines. Thorax rather long, tapering evenly, widest at segments 3-4, with up to possibly 17 segments; axis narrow; pleural lobes wide with flat pleurae. Pygidium small, demarcation from the thorax indistinct.