晚泥盆世—石炭世(密西比世)牙形刺的碳有机质同位素特征及其营养位置——以东欧盆地为例

IF 1.5 3区地球科学 Q2 PALEONTOLOGY

Geodiversitas Pub Date : 2020-10-15 DOI:10.5252/geodiversitas2020v42a24

Andrey V. Zhuravlev

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引用次数: 11

摘要

摘要对晚泥盆世—石炭世(密西比世)不同形态牙形石元素进行了有机质同位素研究。牙形石元素的δ13Corg值在-32.6‰~ -22.4‰之间，平均值为-26.1±4.8‰。本研究分类群中有4种牙形器类型，各类型牙形器中P1元素的形态不同。所研究的牙形刺虽然形态差异明显，但δ13Corg值相近。对碳同位素组成的分类控制也不足。牙形刺有机质碳同位素组成的高度一致性表明，晚泥盆世和石炭世牙形刺具有相似的营养水平。牙形刺有机质的δ13Corg值非常低，说明牙形刺可能是低水平的消耗者，可能是海藻和浮游生物的捕食者。

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Trophic position of some Late Devonian-Carboniferous (Mississippian) conodonts revealed on carbon organic matter isotope signatures: a case study of the East European basin

ABSTRACT An isotopic investigation of organic matter of the Late Devonian-Carboniferous (Mississippian) conodont elements of various morphology was carried out. δ13Corg values of conodont elements measured in this study range from -32.6‰ to -22.4‰, with an average value of –26.1 ± 4.8‰. The study taxa represent four types of conodont apparatus, which differ one from another by morphology of P1 elements. In spite of apparently different morphology all the studied conodonts possess close δ13Corg values. Taxonomic control on the carbon isotope composition is insufficient as well. High consistency of the carbon isotope composition of conodont organic matter suggests that the Late Devonian and Carboniferous (Mississippian) conodonts occupied similar trophic levels. Quite low δ13Corg values in conodont organic matter allow supposing that conodonts were low level consumers, probably seston and plankton feeders.

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来源期刊

Geodiversitas 地学-古生物学

CiteScore

3.00

自引率

5.60%

发文量

审稿时长

>12 weeks

期刊介绍： Geodiversitas is a fully electronic journal, with a continuous publication stream, devoted to varied aspects of Earth Sciences. It publishes original results particularly on systematics, phylogeny, paleobiodiversity and paleoenvironment. Thematic issues may also be published under the responsibility of a guest editor.