The first benthic insects (Ephemeroptera and Coleoptera) from the Upper Cretaceous of Colombia

Alfonso-Rojas, Andrés; Cadena, Edwin‐Alberto

doi:10.1016/j.cretres.2021.105116

Cited by 2 publications

(2 citation statements)

References 20 publications

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“…The fossil record shows that mayflies were abundant and extremely numerous regionally during the Cretaceous, being reported from Asia, North America, and the early Cretaceous of Africa and Australia 36 – 42 . In South America they are restricted to the Aptian–Albian Crato Formation of Brazil, where more than 17 species have been described 42 , and a single finding in the Lower-Upper Cretaceous of Colombia 43 .…”

Section: Resultsmentioning

confidence: 99%

A Maastrichtian insect assemblage from Patagonia sheds light on arthropod diversity previous to the K/Pg event

Vera,

Monferran,

Massaferro

et al. 2023

Commun Biol

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Insect faunas from the latest Cretaceous are poorly known worldwide. Particularly, in the Southern Hemisphere, there is a gap regarding insect assemblages in the Campanian-Maastrichtian interval. Here we present an insect assemblage from the Maastrichtian Chorrillo Formation, southern Argentina, represented by well-preserved and non-deformed, chitinous microscopic remains including head capsules, wings and scales. Identified clades include Chironomidae dipterans, Coelolepida lepidopterans, and Ephemeroptera. The assemblage taxonomically resembles those of Cenozoic age, rather than other Mesozoic assemblages, in being composed by diverse chironomids and lepidopterans. To the best of our knowledge, present discovery constitutes the first insect body fossils for the Maastrichtian in the Southern Hemisphere, thus filling the gap between well-known Early Cretaceous entomofaunas and those of Paleogene age. The presented evidence shows that modern clades of chironomids were already dominant and diversified by the end of the Cretaceous, in concert with the parallel radiation of aquatic angiosperms which became dominant in freshwater habitats. This exceptional finding encourages the active search of microscopic remains of fossil arthropods in other geological units, which could provide a unique way of enhancing our knowledge on the past diversity of the clade.

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Section: Resultsmentioning

confidence: 99%

A Maastrichtian insect assemblage from Patagonia sheds light on arthropod diversity previous to the K/Pg event

Vera,

Monferran,

Massaferro

et al. 2023

Commun Biol

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“…3 ). The most significant gap is the Late Cretaceous with only one compression/imprint fossil mayfly documented from this epoch: a larva attributable only to the order-level due to insufficient preservation of diagnostic characters 21 . All other occurrences of mayflies are limited to inclusions in amber from several deposits (Burmese/Myanmar, New Jersey, Lebanon, Taimyr).…”

Section: Resultsmentioning

confidence: 99%

Fluctuation in the diversity of mayflies (Insecta, Ephemerida) as documented in the fossil record

Sroka,

Godunko,

Prokop

2023

Sci Rep

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Due to their aquatic larvae, the evolution of mayflies is intricately tied to environmental changes affecting lakes and rivers. Despite a rich fossil record, little is known about the factors shaping the pattern of diversification of mayflies in deep time. We assemble an unprecedented dataset encompassing all fossil occurrences of mayflies and perform a Bayesian analysis to identify periods of increased origination or extinction. We provide strong evidence for a major extinction of mayflies in the mid-Cretaceous. This extinction and subsequent faunal turnover were probably connected with the rise of angiosperms. Their dominance caused increased nutrient input and changed the chemistry of the freshwater environments, a trend detrimental mainly to lacustrine insects. Mayflies underwent a habitat shift from hypotrophic lakes to running waters, where most of their diversity has been concentrated from the Late Cretaceous to the present.

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The first benthic insects (Ephemeroptera and Coleoptera) from the Upper Cretaceous of Colombia

Cited by 2 publications

References 20 publications

A Maastrichtian insect assemblage from Patagonia sheds light on arthropod diversity previous to the K/Pg event

A Maastrichtian insect assemblage from Patagonia sheds light on arthropod diversity previous to the K/Pg event

Fluctuation in the diversity of mayflies (Insecta, Ephemerida) as documented in the fossil record

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