• Thumbnail for Utaurora
    Utaurora is an extinct genus of opabiniid, which were bizarre stem-arthropods closely related to true arthropods and radiodonts; the type species is U...
    7 KB (597 words) - 23:47, 20 August 2023
  • Thumbnail for Opabinia
    which was discovered in Cambrian-aged rocks of Utah. The fossil was named Utaurora comosa, and was found within the Wheeler Shale. The stem-arthropod was...
    44 KB (4,825 words) - 22:42, 16 August 2024
  • Thumbnail for Opabiniidae
    stem-arthropods. Its type and best-known genus is Opabinia. It also contains Utaurora, and Mieridduryn. Opabiniids closely resemble radiodonts, but their frontal...
    4 KB (397 words) - 02:43, 10 September 2024
  • Thumbnail for Dinocaridida
    Kerygmachela were also regarded to be dinocaridids, two new opabiniid genera, Utaurora and Mieridduryn were described, other strange dinocaridids like Parvibellus...
    23 KB (2,129 words) - 13:36, 4 November 2024
  • Thumbnail for Peytoia
    Utaurora Opabinia...
    18 KB (1,724 words) - 22:30, 14 July 2024
  • Thumbnail for Aegirocassis
    Utaurora Opabinia...
    13 KB (1,120 words) - 21:59, 19 October 2024
  • Thumbnail for Utahnax
    Parvibellus Omnidens Pambdelurion Youti Kerygmachelidae Kerygmachela Utahnax Mobulavermis Opabiniidae Opabinia Utaurora Mieridduryn Radiodonta see Radiodonta...
    3 KB (317 words) - 18:38, 7 July 2024
  • Thumbnail for Mobulavermis
    Parvibellus Omnidens Pambdelurion Youti Kerygmachelidae Kerygmachela Utahnax Mobulavermis Opabiniidae Opabinia Utaurora Mieridduryn Radiodonta see Radiodonta...
    7 KB (646 words) - 09:48, 8 November 2024
  • Thumbnail for Mieridduryn
    Parvibellus Omnidens Pambdelurion Youti Kerygmachelidae Kerygmachela Utahnax Mobulavermis Opabiniidae Opabinia Utaurora Mieridduryn Radiodonta see Radiodonta...
    9 KB (1,034 words) - 02:00, 21 July 2024
  • Thumbnail for Radiodonta
    probably benthic or endobenthic prey. The opabiniids Opabinia (top) and Utaurora (bottom), were close relatives of the radiodonts The presumed...
    95 KB (7,592 words) - 21:03, 22 October 2024