Scolicia shirahamensis isp. nov.: a triple-corded scolicia and its ichnological implications

IF 0.8 4区 地球科学 Q4 PALEONTOLOGY Ichnos-An International Journal for Plant and Animal Traces Pub Date : 2020-04-02 DOI:10.1080/10420940.2020.1744580
Masakazu Nara, Misako Seno’o, Yuta Yamaoka
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引用次数: 3

Abstract

Abstract Peculiar meniscate burrows with three sediment cords occur in early to middle Miocene tidal-flat deposits of southwestern Japan. Two of the cords are situated at the bottom and the other is at its center. Detailed observations of the burrow structures and comparative neoichnological studies of modern spatangoid burrows in a tidal flat revealed that the former two were true drainage tubes and the latter was fecal in origin. The trace fossil was thus assigned to the ichnogenus Scolicia. Based on these findings, a new ichnospecies Scolicia shirahamensis isp. nov. has been described here. The central sediment cord is seemingly identical to the drainage tube of the ichnogenus Bichordites, another ichnogenus that has been commonly ascribed to a fossil spatangoid burrow, similar to Scolicia. Careless ichnogeneric identification of a spatangoid burrow, based only on the central sediment cord, therefore, may produce an incorrect identification.
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石竹属。11月:三束脊柱侧凸及其技术意义
日本西南部中新世早期至中期潮滩沉积中出现了具有三条沉积索的奇特半月形洞。两条线位于底部,另一条位于中心。对一个潮滩的现代蛛形洞穴结构的详细观察和比较新技术研究表明,前两个洞穴是真正的排水管,后者是粪便起源。因此,该化石被归为鱼属。在此基础上,提出了一种新的鱼科植物——石斑鱼。这里描述了11月。中心沉积物索看起来与Bichordites鱼属的引流管相同,Bichordites是另一个鱼属,通常被归因于化石spatangoid洞穴,类似于Scolicia。因此,仅根据中央沉积物索对蝶形洞穴进行粗心的技术属鉴定可能会产生错误的鉴定。
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来源期刊
CiteScore
2.50
自引率
12.50%
发文量
0
审稿时长
>12 weeks
期刊介绍: The foremost aim of Ichnos is to promote excellence in ichnologic research. Primary emphases center upon the ethologic and ecologic significance of tracemaking organisms; organism-substrate interrelationships; and the role of biogenic processes in environmental reconstruction, sediment dynamics, sequence or event stratigraphy, biogeochemistry, and sedimentary diagenesis. Each contribution rests upon a firm taxonomic foundation, although papers dealing solely with systematics and nomenclature may have less priority than those dealing with conceptual and interpretive aspects of ichnology. Contributions from biologists and geologists are equally welcome. The format for Ichnos is designed to accommodate several types of manuscripts, including Research Articles (comprehensive articles dealing with original, fundamental research in ichnology), and Short Communications (short, succinct papers treating certain aspects of the history of ichnology, book reviews, news and notes, or invited comments dealing with current or contentious issues). The large page size and two-column format lend flexibility to the design of tables and illustrations. Thorough but timely reviews and rapid publication of manuscripts are integral parts of the process.
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