Parvibellus

Parvibellus is an extinct genus of panarthropod animal known from the Cambrian of China. It is known from only a single species, P. atavus, found in the Cambrian Stage 3 aged Chengjiang Biota of Yunnan, China.

Parvibellus
Temporal range:
Holotype specimen
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Superphylum: Ecdysozoa
(unranked): Panarthropoda
Genus: †Parvibellus
Species:
†P. atavus
Binomial name
†Parvibellus atavus
Liu et al. 2022

Morphology
Reconstruction

Parvibellus is small panarthropod with length of around 5 mm (0.20 in). There is no evidence that Parvibellus had eyes. The head bore a pair of lateral projections, which may have served as sensory antennae. The trunk ends with another pair of projections. Many aspects of its morphology, such as its 11 pairs of trunk swimming flaps, and ventrally directed circular mouth, suggest a close relationship with stem-group arthropods such as the "gilled lobopodians" Kerygmachela and Pambdelurion, opabiniids and radiodonts. The flaps suggest it was likely an actively swimming organism.[1]

References
  1. Liu, Jianni; Dunlop, Jason A.; Steiner, Michael; Shu, Degan (2022-07-22). "A Cambrian fossil from the Chengjiang fauna sharing characteristics with gilled lobopodians, opabiniids and radiodonts". Frontiers in Earth Science. 10: 861934. doi:10.3389/feart.2022.861934. ISSN 2296-6463.
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