Corynexochida

Rhaxeros pollinctrix

Order Corynexochida / Suborder Illaenina / Superfamily Illaenoidea / Family Scutelluidae

Telychian (Llandovery) to Sheinwoodian (Wenlock), SilurianAustralia

Rhaxeros pollinctrix — photo 1 — Photo 1 · -xeros, a Greek suffix, wrinkled, referring to the surface terraced lineations. Holotype JC F10015 (Australia; Lane et al., Restoration (Lane et al., 1978) JC F10011A (Australia; Lane et al., 1978) 1978) Paratypes (Australia; Lane et al., 1978)

Rhaxeros pollinctrix — photo 2 — Photo 2 · -xeros, a Greek suffix, wrinkled, referring to the surface terraced lineations. Holotype JC F10015 (Australia; Lane et al., Restoration (Lane et al., 1978) JC F10011A (Australia; Lane et al., 1978) 1978) Paratypes (Australia; Lane et al., 1978)

Rhaxeros pollinctrix — photo 3 — Photo 3 · -xeros, a Greek suffix, wrinkled, referring to the surface terraced lineations. Holotype JC F10015 (Australia; Lane et al., Restoration (Lane et al., 1978) JC F10011A (Australia; Lane et al., 1978) 1978) Paratypes (Australia; Lane et al., 1978)

Rhaxeros pollinctrix — photo 4 — Photo 4 · -xeros, a Greek suffix, wrinkled, referring to the surface terraced lineations. Holotype JC F10015 (Australia; Lane et al., Restoration (Lane et al., 1978) JC F10011A (Australia; Lane et al., 1978) 1978) Paratypes (Australia; Lane et al., 1978)

Classification

Order Corynexochida / Suborder Illaenina / Superfamily Illaenoidea / Family Scutelluidae

Genus

Rhaxeros Lane & Thomas, 1980

Genus author

Lane P. D. & Thomas A. T.

Genus etymology

Replacement name for Rhax Lane & Thomas, 1978. rhax, Greek, grape, referring to the smooth appearance;

Species

R. pollinctrix (Lane & Thomas, 1978)

Species author

Lane P. D. & Thomas A. T.

Species etymology

pollinctrix, Latin, funeral attendant

Age

Telychian (Llandovery) to Sheinwoodian (Wenlock), Silurian

Distribution

Australia

Diagnosis

Cranidium gently convex, surface with crescentic terraces, ornament weaker or absent in the posterior half; dorsal furrow shallowing forward; glabella transversely constricted at the level of the eyes, widening rapidly anteriorly; Some specimens show weak muscle scars, with short, faint lateral glabellar furrows outside the scars; palpebral lobes semicircular, large, situated in the posterior half of the cranidium; fixigenae transversely narrow and band-like; librigenae without genal spines, surface largely smooth. Thorax of 10 segments; axial furrows absent; pleurae bluntly rounded distally. Pygidium convex, surface with fine terraces; axis indistinct; pleural ridges faint.

Remarks

This species is the type species of the genus Rhaxeros.