北美始新世首次记录的金鱼亚科(鞘翅目:金鱼科)

IF 1.9 4区地球科学 Q1 PALEONTOLOGY Fossil Record Pub Date : 2021-05-12 DOI:10.5194/FR-24-135-2021

A. Legalov

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引用次数: 2

摘要

摘要一个新属，Palaetalasis gen.nov.（模式种P.monrosi sp.nov.），来自始新世中期早期绿河地层的Megamerini部落（金花虫科：Sagrinae）。这一新属与1845年的RecentAtalasis Lacordaire属相似，但与之不同的是，前肢的近平行侧、没有牙齿的后股骨和非微缺眼。它与1950年始新世的Eosagra Haupt的不同之处在于大而凸、非微缺的眼睛、宽的鞘翅和横向的前足。新属与古新世Gallopsis Legalov，Kirejtshuk et Nel，2019在宽额和凸起方面有所不同。这是北美洲首次记录到仙人掌科，也是绿河金花虫科已知的第四个物种。

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First record of the subfamily Sagrinae (Coleoptera: Chrysomelidae) from the Eocene of North America

Abstract. A new genus, Palaeatalasis gen. nov. (type species P. monrosi sp. nov.), from the tribe Megamerini (Chrysomelidae: Sagrinae) from the early-middle Eocene Green River Formation is described and illustrated. The new genus is similar to the Recent Atalasis Lacordaire, 1845 but differs from it in the subparallel sides of the pronotum, metafemora without teeth, and non-emarginate eyes. It differs from the Eocene Eosagra Haupt, 1950 in the large, convex, non-emarginate eyes, wide elytra, and transverse pronotum. The new genus is distinguished from the Paleocene Gallopsis Legalov, Kirejtshuk et Nel, 2019 in the wide forehead and convex eyes. It is the first record of the Sagrinae from North America and the fourth known species of the family Chrysomelidae from the Green River.

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来源期刊

Fossil Record PALEONTOLOGY-

CiteScore

3.60

自引率

7.10%

发文量

审稿时长

14 weeks

期刊介绍： Fossil Record (FR) is the palaeontological journal of the Museum für Naturkunde Berlin. This journal was founded in 1998 under the name Mitteilungen aus dem Museum für Naturkunde Berlin, Geowissenschaftliche Reihe and appears with two issues each year. Fossil Record publishes original papers in all areas of palaeontology including the taxonomy and systematics of fossil organisms, biostratigraphy, palaeoecology, and evolution. All taxonomic groups are treated, including invertebrates, microfossils, plants, and vertebrates.