A new genus of Insecta based on egg structure from the Late Cretaceous Klikov Formation of the Czech Republic

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023272%3A_____%2F25%3A10137136" target="_blank" >RIV/00023272:_____/25:10137136 - isvavai.cz</a>

Výsledek na webu

<a href="https://publikace.nm.cz/periodicke-publikace/journal-of-the-national-museum-prague-natural-history-series/194-1/a-new-genus-of-insecta-based-on-egg-structure-from-the-late-cretaceous-klikov-formation-of-the-czech-republic" target="_blank" >https://publikace.nm.cz/periodicke-publikace/journal-of-the-national-museum-prague-natural-history-series/194-1/a-new-genus-of-insecta-based-on-egg-structure-from-the-late-cretaceous-klikov-formation-of-the-czech-republic</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.37520/jnmpnhs.2025.011" target="_blank" >10.37520/jnmpnhs.2025.011</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A new genus of Insecta based on egg structure from the Late Cretaceous Klikov Formation of the Czech Republic

Popis výsledku v původním jazyce

A new genus Regentus gen nov. is established here based on species originally described as Spirellea trebecensis, hence the new combination Regentus trebecensis (Knobloch et Mai,1986) comb. nov.. The material was collected and prepared by E. Knobloch from the Klikov Formation, fluvial lacustrine sediments of upper Turonian - Santonian age, located in the South Bohemian Basins, Czech Republic. Regentus trebecensis fossils are broadly elliptical in outline, hollow inside, with a ribbed surface. Their apical end shows ridges rather irregularly arranged, pointing towards the tip; the ridges on the basal end form a rather irregular star-shaped structure. The wall of the fossil shows regular perforations arranged in two parallel rows leading from the inside to the surface. Regentus trebecensis was originally described as a seed, related to recent Stemonaceae Caruel. R. trebecensis resembles Stemonaceae seeds in shape and longitudinally ribbed surface. However, R. trebecensis lack an aril and uniseriate or vesicular hairs originating from hilum, raphe or micropyle, the characteristic for Stemonaceae seeds. The presence of perforation in the fossil wall precludes its interpretation as a fruit or seed. The shape and structure of the perforations resemble aeropyles of insect eggs, particularly the air-containing meshwork of insect eggs (e.g. Phasmatodea, Lepidoptera); this reason led us to interpret the studied fossils as insect eggs. The diversity of insect eggs resembling seeds is high, although no insect group with features exactly matching the fossil material has yet been identified.

Název v anglickém jazyce

A new genus of Insecta based on egg structure from the Late Cretaceous Klikov Formation of the Czech Republic

Popis výsledku anglicky

A new genus Regentus gen nov. is established here based on species originally described as Spirellea trebecensis, hence the new combination Regentus trebecensis (Knobloch et Mai,1986) comb. nov.. The material was collected and prepared by E. Knobloch from the Klikov Formation, fluvial lacustrine sediments of upper Turonian - Santonian age, located in the South Bohemian Basins, Czech Republic. Regentus trebecensis fossils are broadly elliptical in outline, hollow inside, with a ribbed surface. Their apical end shows ridges rather irregularly arranged, pointing towards the tip; the ridges on the basal end form a rather irregular star-shaped structure. The wall of the fossil shows regular perforations arranged in two parallel rows leading from the inside to the surface. Regentus trebecensis was originally described as a seed, related to recent Stemonaceae Caruel. R. trebecensis resembles Stemonaceae seeds in shape and longitudinally ribbed surface. However, R. trebecensis lack an aril and uniseriate or vesicular hairs originating from hilum, raphe or micropyle, the characteristic for Stemonaceae seeds. The presence of perforation in the fossil wall precludes its interpretation as a fruit or seed. The shape and structure of the perforations resemble aeropyles of insect eggs, particularly the air-containing meshwork of insect eggs (e.g. Phasmatodea, Lepidoptera); this reason led us to interpret the studied fossils as insect eggs. The diversity of insect eggs resembling seeds is high, although no insect group with features exactly matching the fossil material has yet been identified.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

10506 - Paleontology

Projekt

<a href="/cs/project/GF23-05142K" target="_blank" >GF23-05142K: Pozdně křídová flóra z jižních Čech</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of the National Museum (Prague), Natural History Series

ISSN

1802-6842

e-ISSN

—

Svazek periodika

194

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

11

Strana od-do

183-193

Kód UT WoS článku

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EID výsledku v databázi Scopus

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