Keretsa

Keretsa brutoni is a fossil bilaterian from the Late Precambrian-aged Zimnie Gory Formation near Arkhangelsk Oblast, Russia, along the Winter coast of the White Sea. The first specimens were found in 2005.^[2] This rounded oblong-shaped organism resembles Naraoia, in having its body divided into an anteriorly positioned headshield, and a trunkshield. A pair of antennae-like structures emanate from underneath the base of the headshield, and there are numerous oblique grooves along the trunkshield that suggest legs.^[2]

Keretsa brutoni Temporal range: Ediacaran ~555 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Kingdom:	Animalia
(unranked):	Bilateria
Phylum:	incertae sedis (?Arthropoda) (?Proarticulata[1])
Genus:	Keretsa
Species:	K. brutoni
Binomial name
Keretsa brutoni Ivantsov, 2017[2]

Artist's reconstruction of K. brutoni as an arthropod, compared to individuals of Parvancorina