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Discovery of crinoid stem fragment imprints on the epitheca of rugose corals

https://doi.org/10.32454/0016-7762-2025-67-2-95-99

EDN: PGVOTZ

Abstract

Background. Paleoecology, which studies the reconstruction of ecosystems of the geological past and their temporal development, has occupied a key place in the complex of geological sciences. Theoretical and applied geology are increasingly incorporating the results of paleoecological analysis, primarily for facies analysis, paleogeography, and detailed stratigraphy.

Aim. To study the first discovered imprints of crinoid stem fragments on the epitheca of rugose corals and elucidate their paleoecological significance.

Materials and methods. More than 2300 corallites were macroscopically examined. The detected imprints of crinoid stem segments were studied using a binocular microscope MBS-1.

Results. A new form of preservation of crinoids has been established, represented by their segment imprints on the epitheca of rugose corals.

Conclusion. The revealed mechanism of formation of crinoids segment imprints on the epitheca of rugose corals indicates a calm hydrodynamic environment and allows us to confidently determine the position of the corallite on the ground.

About the Authors

V. N. Komarov
Sergo Ordzhonikidze Russian State University for Geological Prospecting
Russian Federation

Vladimir N. Komarov — Cand. Sci. (Geol.-Min.), Assoc. Prof., Department of paleontology and regional geology, Sergo Ordzhonikidze Russian State University for Geological Prospecting.

23, Miklukho-Maklaya str., Moscow 117997

tel.: +7 (916) 481-96-84


Competing Interests:

None



Ya. D. Grechishnikova
Sergo Ordzhonikidze Russian State University for Geological Prospecting
Russian Federation

Yana D. Grechishnikova — 5th year student, Sergo Ordzhonikidze Russian State University for Geological Prospecting; technician of the I category of the Department of ferrous and non-ferrous metals, FSBI «VIMS».

23, Miklukho-Maklaya str., Moscow 117997; 31, lane. Staromonetny, Moscow 119017

tel.: +7 (925) 054-84-94


Competing Interests:

None



References

1. Комаров В.Н., Верба Т.И., Вайтиева Ю.А. Спирифериды Licharewia rugulata и эпибиоз // Природа. 2023. № 8. С. 41—47.

2. Комаров В.Н., Волкова Е.А., Качалина М.Д. Брахиоподы Estonirhynchia estonica острова Сааремаа // Природа. 2023. № 4. С. 60—65.

3. Комаров В.Н., Самохвалов С.А., Волкова Е.А., Качалина М.Д. Датские рожицы: крымские кранииды — взгляд из глубины времён // Природа. 2023. № 1. С. 42—49.

4. Паперный М.Л. Новый вид макрофитных водорослей из пермских отложений северо-востока Самарской области (с. Русский Байтуган). Известия высших учебных заведений. Геология и разведка. 2019. № 1. С. 24—31.


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For citations:


Komarov V.N., Grechishnikova Ya.D. Discovery of crinoid stem fragment imprints on the epitheca of rugose corals. Proceedings of higher educational establishments. Geology and Exploration. 2025;67(2):95-99. (In Russ.) https://doi.org/10.32454/0016-7762-2025-67-2-95-99. EDN: PGVOTZ

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ISSN 0016-7762 (Print)
ISSN 2618-8708 (Online)