The first record of a predaceous clerid beetle (Coleoptera: Cleridae) from the Cretaceous Taimyr amber

IF 1.9 3区地球科学 Q1 GEOLOGY

Cretaceous Research Pub Date : 2024-12-26 DOI:10.1016/j.cretres.2024.106076

Jiří Kolibáč , Evgeny E. Perkovsky

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引用次数: 0

Abstract

Cleroid beetle Aiytillus agapensis gen. et sp. nov. is described from upper Cenomanian Taimyr amber. This is the first finding of a predatory checkered beetle (Cleridae) in the Cretaceous. Based on the tarsi with equally large tarsomeres 1–4, the fossil is unambiguously assigned to the basal clerid subfamily Tillinae. The fossil was found near the Nizhnyaya Agapa River in the upper horizon of the Dolgan Formation during an expedition in 1973. Although damaged by improper preservation, the fossil exhibits a number of interesting morphological details including extremely small body (less than 3 mm), long serrated antenna, pretarsal claw with denticle, and comb-like protibial structures. The unusually long antenna together with the aforementioned morphological characters resembles another small tilline fossil Bilbotillus glum Kolibáč from Baltic Amber, although the latter is about 60 My younger. The presence of modern looking clerids in the Middle Jurassic of NE China as well as in Taimyr and Baltic ambers, and conversely their absence in burmite, may indicate the origin of the family in temperate rather than tropical conditions.

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来源期刊

Cretaceous Research 地学-地质学

CiteScore

4.10

自引率

19.00%

发文量

235

审稿时长

12 weeks

期刊介绍： Cretaceous Research provides a forum for the rapid publication of research on all aspects of the Cretaceous Period, including its boundaries with the Jurassic and Palaeogene. Authoritative papers reporting detailed investigations of Cretaceous stratigraphy and palaeontology, studies of regional geology, and reviews of recently published books are complemented by short communications of significant new findings. Papers submitted to Cretaceous Research should place the research in a broad context, with emphasis placed towards our better understanding of the Cretaceous, that are therefore of interest to the diverse, international readership of the journal. Full length papers that focus solely on a local theme or area will not be accepted for publication; authors of short communications are encouraged to discuss how their findings are of relevance to the Cretaceous on a broad scale. Research Areas include: • Regional geology • Stratigraphy and palaeontology • Palaeobiology • Palaeobiogeography • Palaeoceanography • Palaeoclimatology • Evolutionary Palaeoecology • Geochronology • Global events.