Anabarites, Missarzhevsky, 1969

Kouchinsky, Artem, Bengtson, Stefan, Clausen, Sébastien & Vendrasco, Michael J., 2015, An early Cambrian fauna of skeletal fossils from the Emyaksin Formation, northern Siberia, Acta Palaeontologica Polonica 60 (2), pp. 421-512 : 499-501

Anabarites cf. A. biplicatus ( Missarzhevsky, 1989)

Fig. 69D .

Material.— One specimen, SMNH X 4822 , from sample 3/59. Emyaksin Formation , Malaya Kuonamka River; correlated with the Delgadella anabara Zone, Atdabanian Stage .

Description.—Internal mould flattened laterally, with two shallow and wide longitudinal depressions and one of the lobes more extended than the other two sides, and curved in one plane. The mould is oval in cross-section, but rounded and more isodiametrical in the initial growth stage.

7/39.5; longitudinal view. D. SMNH X 4800, sample 7/36.7; longitudinal view. F. SMNH X 4801, sample 7/36.7; longitudinal view. B, E, G. Hyolithellus sp. B . SMNH X 4802, sample 7/16; longitudinal view. E. SMNH X 4804, sample 7/25.6; longitudinal view. G. SMNH X 4803, sample 7/16; transversal view. H–M. Torellella cf. T. laevigata (Linnarson, 1871) . H. SMNH X 4805, sample 7/27.5; H 1, longitudinal view on the narrower side; H 2, oblique transversal view on the apical end; H3, longitudinal view on the broader side of the tube. I. Apical fragment SMNH X 4806, sample 7/25.5; longitudinal view. J. SMNH X 4807, sample 3/25; oblique apical (J 1) and longitudinal (J 2) views. K. SMNH X 4808, sample 6/6.6; oblique apical view. L. SMNH X 4809, specimen with a furrow on narrower sides, sample K7-6.3B; longitudinal view. M. SMNH X 4810, sample 6/14; oblique apical view. Scale bar: 600 μm, except G, 150 μm.

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Figures

Fig. 69. Anabaritids from lower Cambrian Emyaksin Formation, Bol’shaya Kuonamka River and Malaya Kuonamka River, Anabar Uplift, Siberia. A, E. Anabarites trisulcatus Missarzhevsky in Voronova and Missarzhevsky, 1969; sample 7/25.6. A. SMNH X 4818; transversal (A 1) and longitudinal (A 2, A 3) views. E. SMNH X 4819; transversal (E 1) and longitudinal (E 2, E 3) views. B, C. Anabarites cf. A. kelleri Missarzhevsky, 1989. B. SMNH X 4820, sample 3/53.5; longitudinal (B 1, B 2) and oblique transversal (B 3) views. C. SMNH X 4821, sample 6/59.3; transversal (C 1) and longitudinal (C 2) views. D. Anabarites cf. Kotuithes biplicatus Missarzhevsky, 1989; SMNH X 4822, sample 3/59; longitudinal (D 1) and transversal (D ) views. Scale bar 600 μm.