Anabaritid Explained

The anabaritids or angustiochreids are enigmatic tubular, mineralizing organisms with a trifold symmetry (i.e., clover shape) known from their Lower Cambrian fossils. They may have represented cnidaria, but their affinity within the Metazoa is difficult to constrain.^[1]

Systematics

After Kouchinsky et al. (2009):^[1]

• Aculeochrea Val'kov & Sysoev, 1970
  • A. ornata Val'kov & Sysoev, 1970
  • A. rugosa (Val'kov & Sysoev, 1970)
• Anabarites Missarzhevsky in Voronova & Missarzhevsky, 1969
  • A. biplicatus (Missarzhevsky, 1989)
  • A. compositus Missarzhevsky in Rozanov et al., 1969
  • A. convexus (Val'kov & Sysoev, 1970)
  • A. dalirense Devaere et al., 2021^[2]
  • 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)
• Cambrotubulus Missarzhevsky in Rozanov et al., 1969
  • C. decurvatus Missarzhevsky in Rozanov et al., 1969
• Mariochrea Val'kov, 1982
  • M. sinuosa Val'kov, 1982
• Selindeochrea Val'kov, 1982
  • S. tecta Val'kov, 1982
  • S. tricarinata (Missarzhevsky in Rozanov et al., 1969)

Notes and References

1. 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 .
2. 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 .