Mamsetia

Mamsetia
Temporal range: Ediacaran
Fossil material (A, B) and reconstructions (C, D)
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Cnidaria
Class: Staurozoa
Genus: Mamsetia
McIlroy et al., 2024
Species:
M. manunis
Binomial name
Mamsetia manunis
McIlroy et al., 2024

Mamsetia manunis is an extinct cnidarian from the late Ediacaran. Estimated to be about 565 million years old, M. manunis is identified as a cnidarian polyp, and represents some of the earliest known evidence for muscle tissue in an animal. Its fossil was discovered in 2014 from Newfoundland in eastern Canada, and was formally described in 2024 as a staurozoan based on examination of its overall morphology and structure.