Lossinia ( lat. Lossinia lissetskii ) - a species of extinct marine organisms of Ediacar biota . He was probably a representative of the type of articulate [1] . Known for fossils collected off the coast of the White Sea , in the rocks of the Yergin suite [1] [2] , which are about 550 Ma old [3] .
| † Lossinia | ||||||||||||||
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| Lossinia lissetskii Ivantsov, 2007 |
Content
Title
The generic name Lossinia - at the place of find, from the Elk swamp near the Winter coast of the White Sea, Arkhangelsk region . The specific name is in honor of the keeper of the winter-mountain lighthouse Valery Lisetskiy.
View Description
The elongated oval body consists of a head and a body, separated by a narrow groove. The head is semicircular, the length is about 0.3 of the total body length. The edges of the body are divided into short isomers located at an angle to the longitudinal axis of the body. Along the body, along the body axis, there is another narrow groove. The head region and the trunk region, excluding isomers and grooves, are covered with numerous tubercles [1] .
The sizes of the fossil specimens known by the time of the description are 3.2 × 1.8 mm ( holotype ), 3.5 × 2.2 mm, and 8.4 × 4.7 mm [1] .
Genus Description
According to the authors of the first description, the lossinia is most similar to onega , with which it is brought together by the presence of a large undivided area and tubercles on it. The difference is manifested in the fact that the undivided region of the elk has a smaller area and does not surround all isomers, but only borders on the first pair. In addition, lossinia is slightly smaller and has relatively larger isomers [1] .
Onega differs from Vendia by the presence of an undivided region and tubercles, as well as by a significantly smaller size [1] .
Notes
- ↑ 1 2 3 4 5 6 Ivantsov A. Yu. Small Vendian transversely Articulated fossils (Russian) // Paleontological Journal . - Nauka , 2007. - April ( t. 41 , No. 2 ). - S. 113 . - DOI : 10.1134 / S0031030107020013 .
- ↑ Ivantsov, A. Yu. Paleontological Data on the Possibility of Precambrian Existence of Mollusks // Mollusks: Morphology, Behavior and Ecology / Averkii Fyodorov, Havrila Yakovlev. - Nova Science Pub Incorporated, 2012 .-- P. 153-179.
- ↑ Grazhdankin D.V. Chronostratigraphy of the Upper Vendian (on the example of sections of the northeastern outskirts of the East European Platform and the western slope of the Middle Urals). Abstract of dissertation for the degree of Doctor of Geological and Mineralogical Sciences . - Novosibirsk, 2011 .-- S. 10.16. - 33 p.