English Pseudoarctolepis Cited by user Hemiauchenia on 12 Dec 2022 Pseudoarctolepis is an extinct genus of bivalved arthropod known from the Cambrian period.
English Wiwaxia Cited by user Smith609 on 28 May 2019 Wiwaxia is a genus of soft-bodied animals that were covered in carbonaceous scales and spines that protected it from predators.