Siberion

Siberion Fossil range: Early Cambrian 518–513 Ma PreЄ Є O S D C P T J K Pg N ↓ [1] [2]
Scientific classification
Kingdom: Animalia Superphylum: Ecdysozoa Phylum: Lobopodia Class: Xenusia Family: Xenusiidae Genus: Siberion Dzik 2011 Species: S. lenaicus Dzik 2011

Siberion is an extinct genus of lobopod from the Sinsk biota of Russia. Its anatomy, including the proboscis-like organ projecting from the face and prominent grasping first pair of appendages, suggests that xenusians like this organism may have been phylogenetically related to anomalocaridids, like Anomalocaris.^[3]

References

1. Gradstein, Felix; Ogg, James; Smith, Alan (2004). A Geologic Time Scale. Cambridge University Press. p. 147-149. ISBN 0-521-78673-8.
2. Ivantsova, Andrey; Zhuravlevb, Andrey; Legutaa, Anton; Valentin, Krassilova; Melnikovaa, Lyudmila; Ushatinskayaa, Galina (2005). "Palaeoecology of the Early Cambrian Sinsk biota from the Siberian Platform" (PDF). Palaeogeography, Palaeoclimatology, Palaeoecology. 220: 69–88. doi:10.1016/j.palaeo.2004.01.022.
3. Dzik, Jerzy (2011). "The xenusian-to-anomalocaridid transition within the lobopodians". Bollettino della Società Paleontologica Italiana, 50(1): 65-74.