Opabiniidae
Videos
Opabiniidae is an extinct family of marine stem-arthropods. Its type and best-known genus is Opabinia. It also contains Utaurora, and Mieridduryn. Opabiniids closely resemble radiodonts, but their fro
Geothelphusa dehaani.IMG 6498
Opabinia
Videos
Opabinia regalis is an extinct stem group marine arthropod found in the Lagerstätte of the Burgess Shale of British Columbia. Opabinia was a soft-bodied animal, measuring up to 7 cm in body length, an
Opabiniidae
…Opabiniidae is an extinct family of marine stem-arthropods. Its type and best-known genus is Opabinia. It also contains Utaurora, and Mieridduryn. Opabiniids closely resemble radiodonts, but their frontal appendages were basally fused into a proboscis…
USNM PAL 57683 Opabinia regalis Image 3
Comparison of Opabinia regalis from the Burgess Shale, and Utaurora comosa, from the Wheeler Formation, House Range, Utah, USA
Top left: retouched image of Opabinia (Walcott Cambrian Geology and Paleontology II by Charles Doolittle Walcott)