Anabarites Explained

Anabarites is a problematic lower Cambrian genus, and is one of the small shelly fossils. It was abundant in the early Tommotian and is also found in the Nemakit-Daldynian.^[1] The fossils represent the triradially symmetrical mineralised tube in which the organism dwelt; it was sedentary.^[2] It is named after the Anabar region in Yakutia, Russia; its name does not imply 'heavy'.^[3]

Species

After Kouchinsky et al. (2009):^[4]

• A. biplicatus (Missarzhevsky, 1989)
• A. compositus Missarzhevsky in Rozanov et al., 1969
• A. convexus (Val'kov & Sysoev, 1970)
• A. dalirense Devaere et al., 2021^[5]
• A. hariolus (Vasil'eva, 1987)
• A. hexasulcatus (Missarzhevsky, 1974)
• A. korobovi (Missarzhevsky in Rozanov & Missarzhevsky, 1966)
• A. latus (Val'kov & Sysoev, 1970)
• ?A. licis (Missarzhevsky in Rozanov et al., 1969)
• A. missarzhevskyi (Vasil'eva, 1986)
• A. modestus Bokova, 1985
• ?A. natellus (Val'kov & Sysoev, 1970)
• A. rectus Vasil'eva in Rudavskaya & Vasil'eva, 1984
• A. ternarius Missarzhevsky in Rozanov et al., 1969
• A. tripartitus Missarzhevsky in Rozanov et al., 1969
• A. tristichuus Missarzhevsky in Rozanov et al., 1969
• A. trisulcatus Missarzhevsky in Voronova & Missarzhevsky, 1969
• A. valkovi (Bokova in Bokova & Vasil'eva, 1990)
• ?A. volutus (Missarzhevsky in Rozanov et al., 1969)

Further reading

For images, see S. C.. V. V.. Small shelly fossils of late Precambrian and early Cambrian age: a review of recent work. Matthews. Journal of the Geological Society. 131. 3. 289–303. 1975. 10.1144/gsjgs.131.3.0289. Missarzhevsky.

• Kouchinsky . Artem . Bengtson . Stefan . 2002 . The tube wall of Cambrian anabaritids . PDF . Acta Palaeontol. Pol. . 47 . 3. 431–444 .

Notes and References

1. S. B.. Gubanov. A. P.. Felitsyn. Nd isotope composition of early Cambrian discrete basins. Geological Magazine. 139. 2. 2002. 10.1017/S0016756801006252.
2. Q.. S.. FOSSILS AND STRATA Shards of the Cambrian explosion. Yi. Lethaia. 22. 3. 270–270. 1989. 10.1111/j.1502-3931.1989.tb01341.x. Bengtson.
3. S. C.. V. V.. Small shelly fossils of late Precambrian and early Cambrian age: a review of recent work. Matthews. Journal of the Geological Society. 131. 3. 289–303. 1975. 10.1144/gsjgs.131.3.0289. Missarzhevsky.
4. 10.1017/S1477201909002715 . Kouchinsky . A. . Bengtson . S. . Feng . W. . Kutygin . R. . Val'kov . A. . The Lower Cambrian fossil Anabaritids: Affinities, occurrences and systematics . Journal of Systematic Palaeontology . 7 . 3 . 241 . 2009 . 140636579 .
5. Devaere . L. . Korn . D. . Ghaderi . A. . Struck . U. . Bavandpur . A. K. . New and revised small shelly fossil record from the lower Cambrian of northern Iran . 2021 . Papers in Palaeontology . 7 . 4 . 2141–2181 . 10.1002/spp2.1391 . 2021PPal....7.2141D . free .