爱沙尼亚沙边（上奥陶统）SCHMIDTI腕足类CLITAMBONITES地幔腔内共生体的新生物地层

IF 1.5 4区地球科学 Q2 GEOLOGY

Palaios Pub Date : 2022-09-15 DOI:10.2110/palo.2021.067

O. Vinn, Mark A. Wilson, M. Isakar, U. Toom

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引用次数: 1

摘要

摘要/ Abstract摘要:本文描述了一种新的共生体在水生目腕足动物Clitambonites schmidti的地幔腔中的生物分布。这是在爱沙尼亚的Kukruse区域阶段(Sandbian)中已知的第二个腕足类生物闭锁。它与Burrinjuckia和Haplorygma生物类群有相似之处。腹瓣内部的外生物是由腕足动物围绕共生体分泌的。这种共生体很可能是一种悬浮喂食器，它从腕足类动物的地幔腔中收集食物颗粒。这种共生体要么是一种窃食寄生虫，要么以腕足动物的粪便为食(食粪)。在波罗的海奥陶系腕足类动物中，以粘虫为寄主的共生案例居多。因此，在波罗的海奥陶纪，cliitambonitid腕足类比其他腕足类更有可能成为共生的宿主。

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NEW BIOCLAUSTRATION OF A SYMBIONT IN THE MANTLE CAVITY OF CLITAMBONITES SCHMIDTI (BRACHIOPODA) FROM THE SANDBIAN (UPPER ORDOVICIAN) OF ESTONIA

Abstract: A new bioclaustration of a symbiont is here described from the mantle cavity of the strophomenatan brachiopod Clitambonites schmidti. It is the second bioclaustration in brachiopods known from the Kukruse Regional Stage (Sandbian) of Estonia. It shares affinities with the bioclaustrations Burrinjuckia and Haplorygma. The outgrowth in the ventral valve interior was secreted by the brachiopod around a symbiont. Most likely the symbiont was a suspension feeder that collected food particles from the brachiopod's mantle cavity. The symbiont was either a kleptoparasite or fed on the brachiopod's feces (coprophagy). The majority of symbiosis cases in brachiopods in the Ordovician of Baltica involve clitambonitids as the hosts. Thus, clitambonitid brachiopods were more likely hosts for symbiosis than other brachiopods in the Ordovician of Baltica.

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来源期刊

Palaios 地学-地质学

CiteScore

2.80

自引率

12.50%

发文量

审稿时长

6 months

期刊介绍： PALAIOS is a monthly journal, founded in 1986, dedicated to emphasizing the impact of life on Earth''s history as recorded in the paleontological and sedimentological records. PALAIOS disseminates information to an international spectrum of geologists and biologists interested in a broad range of topics, including, but not limited to, biogeochemistry, ichnology, paleoclimatology, paleoecology, paleoceanography, sedimentology, stratigraphy, geomicrobiology, paleobiogeochemistry, and astrobiology. PALAIOS publishes original papers that emphasize using paleontology to answer important geological and biological questions that further our understanding of Earth history. Accordingly, manuscripts whose subject matter and conclusions have broader geologic implications are much more likely to be selected for publication. Given that the purpose of PALAIOS is to generate enthusiasm for paleontology among a broad spectrum of readers, the editors request the following: titles that generate immediate interest; abstracts that emphasize important conclusions; illustrations of professional caliber used in place of words; and lively, yet scholarly, text.