Redlichiida

Redlichia (Redlichia) rex

Order Redlichiida / Suborder Redlichiina / Superfamily Redlichioidea / Family Redlichiidae

Cambrian, Series 2, Stage 4Australia

Redlichia (Redlichia) rex — photo 1 — Photo 1 · D. C. Type specimen (Australia; Holmes et al., 2020) Reconstruction (Holmes et al., 2020) Large individuals specimens ~19cm; Holmes et al.,2020 Figured specimen (Australia; Holmes et al., 2020)

Redlichia (Redlichia) rex — photo 2 — Photo 2 · D. C. Type specimen (Australia; Holmes et al., 2020) Reconstruction (Holmes et al., 2020) Large individuals specimens ~19cm; Holmes et al.,2020 Figured specimen (Australia; Holmes et al., 2020)

Redlichia (Redlichia) rex — photo 3 — Photo 3 · D. C. Type specimen (Australia; Holmes et al., 2020) Reconstruction (Holmes et al., 2020) Large individuals specimens ~19cm; Holmes et al.,2020 Figured specimen (Australia; Holmes et al., 2020)

Redlichia (Redlichia) rex — photo 4 — Photo 4 · D. C. Type specimen (Australia; Holmes et al., 2020) Reconstruction (Holmes et al., 2020) Large individuals specimens ~19cm; Holmes et al.,2020 Figured specimen (Australia; Holmes et al., 2020)

Redlichia (Redlichia) rex — photo 5 — Photo 5 · D. C. Type specimen (Australia; Holmes et al., 2020) Reconstruction (Holmes et al., 2020) Large individuals specimens ~19cm; Holmes et al.,2020 Figured specimen (Australia; Holmes et al., 2020)

Classification

Order Redlichiida / Suborder Redlichiina / Superfamily Redlichioidea / Family Redlichiidae

Genus

Redlichia, subgenus Redlichia Cossmann, 1902

Genus author

Cossmann M.

Genus etymology

Redlich, a surname, honouring the British paleontologist K. A. Redlich

Species

R. (R.) rex Holmes, Paterson & García-Bellido, 2020

Species author

Holmes J. D., Paterson J. R., Garc í a-Bellido

Species etymology

rex, Latin, king, referring to the notably large size of this species

Age

Cambrian, Series 2, Stage 4

Distribution

Australia

Synonyms

Redlichia rex

Diagnosis

Glabella large and broad, conical, rounded anteriorly, three pairs of glabellar furrows; preglabellar field narrow or absent; occipital ring with a slender occipital spine extending backward from midlength; palpebral lobe long; free cheek broad, genal spine of moderate length. Tho Thorax of 15 segments (occasionally 16); Each axial ring with axial spine or axial node of varying length, 11th longest; Pleural furrow deep, pleural spines short. Pygidium small; Pygidial axis divided into two rings plus a terminal segment, rax axis with the first ring similar to a thoracic segment and bearing a small axial spine.

Remarks

The authors consider this the largest species of Redlichia and the largest Cambrian trilobite of Australia, reaching about 25 cm.