Microcosm of the Devonian Microconchids and Cornulitids of Transcaucasia
- Authors: Komarov V.N1, Izmailova A.A1, Golovastov D.A1, Goncharova E.I1
-
Affiliations:
- Sergo Ordzhonikidze Russian State Geological Prospecting University
- Issue: No 7 (2021)
- Pages: 47-54
- Section: Articles
- URL: https://journals.eco-vector.com/0032-874X/article/view/628010
- DOI: https://doi.org/10.7868/S0032874X2107005X
- ID: 628010
Cite item
Abstract
The data on the first findings of microconchids and cornulitids on the shells of atrypids of Transcaucasia in the range from the Emsian to the Frasnian stage are presented. Epibionts, represented by smooth tubes of the genera Palaeconchus and Cornulites, were found in approximately equal proportions on both the ventral and dorsal flaps of brachiopods. It seems, that the attachment of the studied representatives of the genera Palaeconchus was most likely postmortem, as there is no regularity in their locations. The garlanded nature of the growth of Cornulites, when the constituent members of the garland are approximately of the same size, and the chains of tubes are mouth-directed to the anterior commissure and are located in parallel to the frontal edge, indicates the intravital attachment of these epibionts. During the Devonian period, epibionts were common, though quite rare, elements of the benthic fauna in Transcaucasia. They are characterized by a low level of taxonomic divergence, morphological diversity of adaptive adaptations, and ecological differentiation, which generally indicate the stability of abiotic and biotic environmental conditions.
Keywords
About the authors
V. N Komarov
Sergo Ordzhonikidze Russian State Geological Prospecting University
Email: komarovmgri@mail.ru
Moscow, Russia
A. A Izmailova
Sergo Ordzhonikidze Russian State Geological Prospecting University
Email: fenekmangi@gmail.com
Moscow, Russia
D. A Golovastov
Sergo Ordzhonikidze Russian State Geological Prospecting University
Email: goldan21@mail.ru
Moscow, Russia
E. I Goncharova
Sergo Ordzhonikidze Russian State Geological Prospecting University
Email: elvira.dragon.01@mail.ru
Moscow, Russia
References
- Комаров В.Н. Девонские атрипиды Закавказья. М., 1997.
- Вайтиева Ю.А., Локтионов А.Д., Комаров В.Н. Первые находки представителей рода Cornulites Schlotheim (Microconchida, Tentaculita) на раковинах девонских атрипид (Brachiopoda) Закавказья. Инновации. Наука. Образование. Электронное периодическое издание. 2021; 26: 1043–1051.
- Измайлова А.А., Головастов Д.А., Комаров В.Н. Первые находки представителей рода Palaeconchus Vinn (Microconchida, Tentaculita) на раковинах девонских атрипид (Brachiopoda) Закавказья. Инновации. Наука. Образование. Электронное периодическое издание. 2021; 26: 1068–1078.
- Павлидис С.Б., Зеленкова И.С., Комаров В.Н. Уникальная находка гирляндного прирастания представителей рода Cornulites (Microconchida, Tentaculita) на раковинах атрипид (Brachiopoda) из девонских отложений Закавказья. Инновации. Наука. Образование. Электронное периодическое издание. 2021; 31: 1298–1303.
- Vinn O. Shell structure of helically coiled microconchids from the Middle Triassic (Anisian) of Germany. Palдontologische Zeitschrift. 2010; 84: 495–499.
- Vinn O. Adaptive strategies in the evolution of encrusting tentaculitoid tubeworms. Palaeogeography, Palaeoclimatology, Palaeoecology. 2010; 292: 211–221.
- Vinn O., Mutvei H. Calcareous tubeworms of the Phanerozoic. Estonian Journal of Earth Sciences. 2009; 58(4): 286–296.
- Wilson M.A., Yancey T.E., Vinn O. A new microconchid tubeworm from the Lower Permian (Artinskian) of central Texas, USA. Acta Palaeontologica Polonica. 2011; 56: 785–791.
- Zatoс M., Grey M., Vinn O. Microconchid tubeworms (Class Tentaculita) from the Joggins Formation (Pennsylvanian), Nova Scotia, Canada. Canadian Journal of Earth Sciences. 2014; 51: 669–676.
- Zatoс M., Krawczyсski W. New Devonian microconchids (Tentaculita) from the Holy Cross Mountains, Poland. Journal of Paleontology. 2011; 85(4): 757–769.
- Zatoс M., Krawczynski W. Microconchid tubeworms across the Upper Frasnian — Lower Famennian interval in the Central Devonian Field, Russia. Palaeontology. 2011; 54(6): 1455–1473.
- Zatoс M., Mundy D.J.C. Microconchus cravenensis n. sp.: a giant among microconchid tubeworms. Journal of Paleontology. 2020; 94(6): 1051–1058.
- Zatoс M., Vinn O. Microconchids and the rise of modern encrusting communities. Lethaia. 2011; 44: 5–7.
- Zatoс M., Vinn O., Toom U. A new microconchid species from the Silurian of Baltica. Estonian Journal of Earth Sciences. 2016; 65(2): 115–123.
- Zatoс M., Olempska E. A family-level classification of the Order Microconchida (Class Tentaculita) and the description of two new microconchid genera. Historical Biology. 2017; 29(7): 885–894.