Redlichiida

Emuella dalgarnoi

Order Redlichiida / Suborder Redlichiina / Superfamily Emuelloidea / Family Emuellidae

Cambrian, Series 2, Stage 3Australia

Emuella dalgarnoi — photo 1 — Photo 1 · Holotype AUGDF16659 (Australia; AUGDF16660 (Australia; Pocock 1970) Paterson et al., 2006) Figured specimens AUGDF16662 and AUGDF16660 (both rubber casts of external moulds) (Australia; Paterson et al., 2006)

Emuella dalgarnoi — photo 2 — Photo 2 · Holotype AUGDF16659 (Australia; AUGDF16660 (Australia; Pocock 1970) Paterson et al., 2006) Figured specimens AUGDF16662 and AUGDF16660 (both rubber casts of external moulds) (Australia; Paterson et al., 2006)

Emuella dalgarnoi — photo 3 — Photo 3 · Holotype AUGDF16659 (Australia; AUGDF16660 (Australia; Pocock 1970) Paterson et al., 2006) Figured specimens AUGDF16662 and AUGDF16660 (both rubber casts of external moulds) (Australia; Paterson et al., 2006)

Emuella dalgarnoi — photo 4 — Photo 4 · Holotype AUGDF16659 (Australia; AUGDF16660 (Australia; Pocock 1970) Paterson et al., 2006) Figured specimens AUGDF16662 and AUGDF16660 (both rubber casts of external moulds) (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. dalgarnoi Pocock, 1970

Species author

Pocock K. J.

Species etymology

Dalgarno — named for Mr R. C. Dalgarno, co-discoverer of the Flinders Range

Age

Cambrian, Series 2, Stage 3

Distribution

Australia

Diagnosis

Cephalon subpentagonal; cranidium nearly square; glabella constricted at midlength with an expanded frontal lobe, three pairs of transversely broad glabellar furrows; occipital ring with a small node; palpebral lobe nearly as long as the eye ridge, both stout; fixed cheek palpebral area nearly as wide as the free cheek; genal spine of moderate length. Thorax currently recorded with 58 segments (6+52), divided into prothorax and opisthothorax by the macropleural spine of segment 6. Pygidium extremely small.

Remarks

In frontal lobe of the glabella and in the extension angle of the palpebral lobe and eye ridge it resembles B. dailyi, while in cephalic shape it resembles E. polymera.