英国怀特岛古近纪的蚀刻龟骨

IF 0.8 4区 地球科学 Q4 PALEONTOLOGY
S. Donovan, M. Simpson
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引用次数: 3

摘要

怀特岛古生物学的许多方面都是众所周知的,但它的技术却鲜为人知。乌龟骨头,艾米?sp.,来自下渐新世(鲁伯利世)的Hamstead成员,Bouldnor组,暴露在岛的北海岸,保留了一个不寻常的表面蚀刻。Dictyoporus nodosus Mägdefrau为古近系首次记录;迄今为止,在北欧,人们只从中生代就知道它。这也是它在骨头上的第一次记录。痕迹化石是一个细长的网状结构,延伸到骨骼的邻近部分(未保存)。在形态学上,硬底物中的相同钻孔应包括在同一鱼属中;基材的性质——木材、石灰石、骨头——是一种很差的石蜡基。因此,karethrraichnus Zonneveld等人的棒状骨钻孔与胃chaenolites Leymerie同属,后者在石灰岩中更为常见。D. nodosus的罕见可能是由于收集失败,部分;也许收藏者不是在寻找表面蚀刻。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
An etched turtle bone from the Paleogene of the Isle of Wight, UK
Abstract Many aspects of the palaeontology of the Isle of Wight are well known, but less so its ichnology. A turtle bone, Emys? sp., from the Lower Oligocene (Rupelian) Hamstead Member, Bouldnor Formation, exposed on the north coast of the island, preserves an unusual surface etching. Dictyoporus nodosus Mägdefrau is recorded from the Paleogene for the first time; hitherto, in northern Europe, it was only known from the Mesozoic. This is also its first record in bone. The trace fossil is an elongate reticulate structure which extended onto adjacent parts of the skeleton (not preserved). Morphologically, identical borings in hard substrates should be included in the same ichnogenus; the nature of the substrate – wood, limestone, bone – is a poor ichnotaxobase. Thus, the clavate bone boring, Karethraichnus Zonneveld et al. is synonymized with Gastrochaenolites Leymerie, more common in limestone. The rarity of D. nodosus may be due to collection failure, in part; perhaps collectors are not looking for surface etchings.
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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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