Ichnology of a dolomitized raised reef: Hopegate Formation, Jamaica (Upper Pliocene)

IF 0.8 4区地球科学 Q4 PALEONTOLOGY

Ichnos-An International Journal for Plant and Animal Traces Pub Date : 2021-07-03 DOI:10.1080/10420940.2021.1932489

S. Donovan, R. Portell

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引用次数: 1

Abstract

Abstract The Upper Pliocene Hopegate Formation of north central Jamaica is a dolomitized raised reef. Hitherto, its palaeontology has been largely ignored because of the poor preservation; the Hopegate Formation is highly karstified, well indurated and fossils are commonly preserved as molds. However, moldic preservation has enhanced the common borings. Ichnotaxa identified from this formation include Entobia ovula? Bromley and d’Alessandro; Entobia ispp.; Gastrochaenolites isp. cf. G. torpedo Kelly and Bromley; Gastrochaenolites pickerilli Donovan; Gastrochaenolites ispp.; Oichnus simplex Bromley; Rogerella isp. cf. R. lecontrei Saint-Seine; Talpina isp. cf. T. hirsuta Voigt and Uniglobites flomerata (Morris). There are more specimens of Entobia than all other ichnotaxa combined. Comparison with other Neogene formations or members in the Antilles demonstrates that the association Entobia + Gastrochaenolites + Oichnus is near-ubiquitous. Caulostrepsis Clarke, which is common in modern shallow water environments in association with Entobia and Gastrochaenolites, is less common in the ancient associations of the Antilles.

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牙买加(上新世)Hopegate组白云化隆起礁技术

牙买加中北部上新世Hopegate组为白云化隆起礁。迄今为止，由于保存不善，它的古生物学在很大程度上被忽视了;希望门组岩溶程度高，硬化程度好，化石一般以霉菌形式保存。然而，霉菌的保存增强了常见的无聊。从这一地层中鉴定出的鱼类群包括Entobia ovula?布罗姆利和达历山德罗;Entobia ispp。Gastrochaenolites isp。参见G.鱼雷凯利和布罗姆利;Gastrochaenolites pickerilli Donovan;Gastrochaenolites ispp。单纯性布罗姆利;Rogerella isp。参见r.l econtrei Saint-Seine;Talpina isp。参见T. hirsuta Voigt和Uniglobites flomerata (Morris)。它的标本比其他所有鱼分类群的总和还要多。与安的列斯其他新近系组或成员的比较表明，Entobia + Gastrochaenolites + Oichnus组合几乎无处不在。Clarke Caulostrepsis在与Entobia和Gastrochaenolites相关的现代浅水环境中很常见，而在安的列斯群岛的古代关联中则不太常见。

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来源期刊

Ichnos-An International Journal for Plant and Animal Traces PALEONTOLOGY-

CiteScore

2.50

自引率

12.50%

发文量

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.