Redlichiida

Emuella polymera

Order Redlichiida / Suborder Redlichiina / Superfamily Emuelloidea / Family Emuellidae

Cambrian, Series 2, Stage 3Australia

Emuella polymera — photo 1 — Photo 1 · Holotype AUGDF16643 (left: Pocock 1970; right: Paterson et (Australia; Pocock 1970) al., 2006; both claimed to be internal moulds) Figured specimens (2: rubber cast of external mould, D. Simpson collection; 3, 4: paratypes AUGDF16654) (Australia; Paterson et al., 2006)

Emuella polymera — photo 2 — Photo 2 · Holotype AUGDF16643 (left: Pocock 1970; right: Paterson et (Australia; Pocock 1970) al., 2006; both claimed to be internal moulds) Figured specimens (2: rubber cast of external mould, D. Simpson collection; 3, 4: paratypes AUGDF16654) (Australia; Paterson et al., 2006)

Emuella polymera — photo 3 — Photo 3 · Holotype AUGDF16643 (left: Pocock 1970; right: Paterson et (Australia; Pocock 1970) al., 2006; both claimed to be internal moulds) Figured specimens (2: rubber cast of external mould, D. Simpson collection; 3, 4: paratypes AUGDF16654) (Australia; Paterson et al., 2006)

Emuella polymera — photo 4 — Photo 4 · Holotype AUGDF16643 (left: Pocock 1970; right: Paterson et (Australia; Pocock 1970) al., 2006; both claimed to be internal moulds) Figured specimens (2: rubber cast of external mould, D. Simpson collection; 3, 4: paratypes AUGDF16654) (Australia; Paterson et al., 2006)

Emuella polymera — photo 5 — Photo 5 · Holotype AUGDF16643 (left: Pocock 1970; right: Paterson et (Australia; Pocock 1970) al., 2006; both claimed to be internal moulds) Figured specimens (2: rubber cast of external mould, D. Simpson collection; 3, 4: paratypes AUGDF16654) (Australia; Paterson et al., 2006)

Emuella polymera — photo 6 — Photo 6 · Holotype AUGDF16643 (left: Pocock 1970; right: Paterson et (Australia; Pocock 1970) al., 2006; both claimed to be internal moulds) Figured specimens (2: rubber cast of external mould, D. Simpson collection; 3, 4: paratypes AUGDF16654) (Australia; Paterson et al., 2006)

Classification

Order Redlichiida / Suborder Redlichiina / Superfamily Emuelloidea / Family Emuellidae

Genus

Emuella Pocock, 1970

Genus author

Pocock K. J.

Genus etymology

Emu Bay, on Kangaroo Island, Australia

Species

E. polymera Pocock, 1970

Species author

Pocock K. J.

Species etymology

polymera, Greek, many, referring to the numerous thoracic segments

Age

Cambrian, Series 2, Stage 3

Distribution

Australia

Diagnosis

Cephalon subpentagonal; cranidium subsquare; glabella constricted at midlength with a slightly expanded frontal lobe, three pairs of transverse glabellar furrows; palpebral lobe shorter than the eye ridge, both stout; fixed cheek broad; free cheek narrow, genal spine of moderate length. Thorax currently recorded with 48 segments (6+42), divided into prothorax and opisthothorax by the macropleural spine of segment 6. Pygidium extremely small.

Remarks

This species is the type species of Emuella.