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

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

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

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...

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...

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

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

the Burgess Shale fauna. Several of the finds, including the enigmatic Opabinia and Anomalocaris have some, though not all, features associated with arthropods...

explosion. Invertebrates are grouped into different phyla (body plans). Opabinia, an extinct stem group arthropod appeared in the Middle Cambrian: 124–136 ...

the most publicity, for example: Whittington's first presentation about Opabinia made the audience laugh. The reconstruction showed a soft-bodied animal...