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  • Thumbnail for Redlichiina
    suborder Olenellina, bound by rostral and connective sutures. Thorax: Fulcrate or non-fulcrate, typically with many segments (60+ in an Emmuelid). The axis is...
    4 KB (259 words) - 02:10, 16 September 2021
  • Thumbnail for Eodiscidae
    horizontal inner portion that abruptly passes into an inclined outer portion (fulcrate). The central raised area of the cephalon (or glabella) is narrow, usually...
    3 KB (267 words) - 22:15, 20 December 2023
  • Thumbnail for Eodiscina
    approximately similar size and outline. Thorax consisting of two or three fulcrate segments. Cephalon strongly parabolic in outline with maximum width (tr...
    9 KB (971 words) - 12:40, 6 February 2024
  • Thumbnail for Tsunyidiscus
    Agnostida the exoskeleton of Tsunyidiscus is diminutive and isopygous with 3 fulcrate thoracic segments. The cephalon has a strongly parabolic outline and maximum...
    9 KB (871 words) - 05:07, 23 November 2023
  • Thumbnail for Pagetia
    Eodiscidae and Pagetiidae. No genal spines. Thorax of two segments; pleurae fulcrate with anterior pleural tips pointing backwards and those of the posterior...
    11 KB (879 words) - 04:57, 23 November 2023