Redlichiida

Olenellus santuccii

Order Redlichiida / Suborder Olenellina / Superfamily Olenelloidea / Family Olenellidae

Cambrian, Series 2, Stage 4Canada

Olenellus santuccii — photo 1 — Photo 1 · Holotype RBCM.EH2015.013.0252.003 (Canada; Webster et al., 2024) Illustrated specimens (Canada; Webster et al., 2024) (Canada; Webster et al., 2024) (Canada; Caron et al., 2023)

Olenellus santuccii — photo 2 — Photo 2 · Holotype RBCM.EH2015.013.0252.003 (Canada; Webster et al., 2024) Illustrated specimens (Canada; Webster et al., 2024) (Canada; Webster et al., 2024) (Canada; Caron et al., 2023)

Olenellus santuccii — photo 3 — Photo 3 · Holotype RBCM.EH2015.013.0252.003 (Canada; Webster et al., 2024) Illustrated specimens (Canada; Webster et al., 2024) (Canada; Webster et al., 2024) (Canada; Caron et al., 2023)

Olenellus santuccii — photo 4 — Photo 4 · Holotype RBCM.EH2015.013.0252.003 (Canada; Webster et al., 2024) Illustrated specimens (Canada; Webster et al., 2024) (Canada; Webster et al., 2024) (Canada; Caron et al., 2023)

Olenellus santuccii — photo 5 — Photo 5 · Holotype RBCM.EH2015.013.0252.003 (Canada; Webster et al., 2024) Illustrated specimens (Canada; Webster et al., 2024) (Canada; Webster et al., 2024) (Canada; Caron et al., 2023)

Olenellus santuccii — photo 6 — Photo 6 · Holotype RBCM.EH2015.013.0252.003 (Canada; Webster et al., 2024) Illustrated specimens (Canada; Webster et al., 2024) (Canada; Webster et al., 2024) (Canada; Caron et al., 2023)

Classification

Order Redlichiida / Suborder Olenellina / Superfamily Olenelloidea / Family Olenellidae

Genus

Olenellus Billings, 1861

Genus author

Billings E.

Genus etymology

Olenus, a trilobite genus name; -ellus, diminutive suffix.

Species

O. santuccii Webster in Webster & Caron, 2024

Species author

Webster M.

Species etymology

named after Guy Santucci of Cranbrook; his generosity and steadfast enthusiasm played a key role in establishing and coordinating this research programme.

Age

Cambrian, Series 2, Stage 4

Distribution

Canada

Diagnosis

Cephalon semicircular, genal spines slender and long, border of moderate width; glabella clavate, with three pairs of glabellar furrows; preglabellar field developed; posterior margin of occipital ring with a small median node; genal ridge usually present; palpebral lobe crescentic; Prothorax of 14 segments; some axial rings with small axial nodes; 1st pleural segment transversely narrow; 3rd segment macropleural, longitudinally long, pleural spine huge; pleural furrow broad, extending onto the pleural spine; 15th segment with a long axial spine exceeding the prothorax in length. The rest of the thorax and pygidium are unknown.