Opabinia regalis is an extinct, stem group arthropod found in the Middle Cambrian Burgess Shale Lagerstätte (505 million years ago) of British Columbia...

arthropod. For example, Graham Budd's analyses of Kerygmachela in 1993 and of Opabinia in 1996 convinced him that these animals were similar to onychophorans...

group compose of Radiodonta (Anomalocaris and relatives), Opabiniidae (Opabinia and relatives), and the "gilled lobopodians" Pambdelurion and Kerygmachelidae...

extinct family of marine stem-arthropods. Its type and best-known genus is Opabinia. It also contains Utaurora, and Mieridduryn. Opabiniids closely resemble...

far the only other known unquestionable opabiniid, with the other being Opabinia itself. There are other animals like Myoscolex and Mieridduryn that could...

he wanted to call his book Homage to Opabinia. Gould wrote: I believe that Whittington's reconstruction of Opabinia in 1975 will stand as one of the great...

researchers that many of the Burgess Shale's "weird wonders", such as Opabinia and Hallucigenia, were evolutionary "aunts and cousins" of present-day...

characteristics, Smith et al. placed in the arthropod clade containing Anomalocaris, Opabinia, Pambdelurion and Kerygmachela. Smith, Martin R.; Long, Emma J.; Dhungana...

"Xenusians" or "Xenusiids" (class Xenusia). Certain Dinocaridid genera, such as Opabinia, Pambdelurion, and Kerygmachela, may also be regarded as lobopodians, sometimes...

pteryx. Others pointed to a general resemblance between Tullimonstrum and Opabinia regalis, although Cave et al. note that they were too morphologically dissimilar...