New data on the age of the Lower Cretaceous amber outcrops of Lebanon

Maksoud, Sibelle; Azar, Dany; Granier, Bruno; Gèze, Raymond

doi:10.1016/j.palwor.2016.03.003

Cited by 60 publications

(41 citation statements)

References 8 publications

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“…The charyophyte layer is associated to the Cruciata-Paucibracteatus Zone of Martín-Closas et al (2009) in the late Barremian-early Aptian, but this layer is also older than the Banc de Mrejatt subunit within Lebanon, thus Jezzine amber is older than the Ba2 layer in Fig. 6 of Maksoud et al (2016). Jezzine amber is therefore no younger than early Barremian.…”

Section: Age Justificationmentioning

confidence: 95%

“…This is below the Jezzinian regional stage (Maksoud et al, 2014) and above the Banc de Mrejatt subunit (indicated as Ba3-Ba4 in Fig. 4 of Maksoud et al, 2016). Despite the lack of microfossils to further constrain the oldest boundary of the Jezzinian within the late Barremian, there is evidence that later Lebanese amber deposits bear the same age as Jezzine amber (see 26.3) because the amber itself has been reworked (Maksoud et al, 2016).…”

Section: Age Justificationmentioning

confidence: 95%

“…This fossil was discovered in amber from the Mdeyrij-Hammana outcrop of the Baabda district, Mount Lebanon (Azar et al, 2010). Recent revision of the stratigraphy of Lebanese amber deposits places the Hammana fossils in the upper interval of the Grès du Liban (Maksoud et al, 2016). This is below the Jezzinian regional stage (Maksoud et al, 2014) and above the Banc de Mrejatt subunit (indicated as Ba3-Ba4 in Fig.…”

Section: Age Justificationmentioning

confidence: 97%

“…Previous work suggested a Neocomian (Valanginian-Hauterivian) age for the Jezzine area (Azar et al, 2010). However, Lebanese stratigraphy has recently been revised; the Jouar Ess-Souss locality is now recognized as part of the lowermost interval of the Grès du Liban (Maksoud et al, 2016). The lower interval lies below a shale layer bearing the echinoid fossil Heteraster oblongus, and below a pisolitic interval bearing charyophyte fossils (Maksoud et al, 2016).…”

Section: Age Justificationmentioning

confidence: 99%

“…libanensis was discovered in Cretaceous amber, from a locality in Lebanon that was not recorded (Sturm and Poinar, 1998). We therefore use a minimum age constraint from the youngest of the several known Lebanese amber localities, which all bear the same age within the early Barremian (Maksoud et al, 2016). The upper boundary of the early Barremian is proposed to be the first appearance of the ammonite Ancyloceras vandenheckii (Ogg et al, 2012).…”

Section: Age Justificationmentioning

confidence: 99%

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Fossil Calibrations for the Arthropod Tree of Life

Wolfe

Daley

Legg³

et al. 2016

Preprint

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Fossil age data and molecular sequences are increasingly combined to establish a timescale for the Tree of Life. Arthropods, as the most species-rich and morphologically disparate animal phylum, have received substantial attention, particularly with regard to questions such as the timing of habitat shifts (e.g., terrestrialisation), genome evolution (e.g., gene family duplication and functional evolution), origins of novel characters and behaviours (e.g., wings and flight, venom, silk), biogeography, rate of diversification (e.g., Cambrian explosion, insect coevolution with angiosperms, evolution of crab body plans), and the evolution of arthropod microbiomes. We present herein a series of rigorously vetted calibration fossils for arthropod evolutionary history, taking into account recently published guidelines for best practice in fossil calibration. These are restricted to Palaeozoic and Mesozoic fossils, no deeper than ordinal taxonomic level, nonetheless resulting in 79 fossil calibrations for 101 clades. This work is especially timely owing to the rapid growth of molecular sequence data and the fact that many included fossils have been described within the last five years. This contribution provides a resource for systematists and other biologists interested in deep-time questions in arthropod evolution.

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Section: Age Justificationmentioning

confidence: 95%

Section: Age Justificationmentioning

confidence: 95%

Section: Age Justificationmentioning

confidence: 97%

Section: Age Justificationmentioning

confidence: 99%

Section: Age Justificationmentioning

confidence: 99%

See 3 more Smart Citations

Fossil Calibrations for the Arthropod Tree of Life

Wolfe

Daley

Legg³

et al. 2016

Preprint

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Jumping bristletails (Insecta, Archaeognatha) from the Lower Cretaceous amber of Lebanon

Sánchez‐García

Peñalver

Delclòs

et al. 2019

Papers in Palaeontology

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Jumping bristletails (order Archaeognatha), the basalmost order of extant insects, include some of the earliest fossil records among hexapods, yet their overall geological occurrence remains sparse and has provided little insight into their evolution. The earliest representatives of crowngroup bristletails are those in Lebanese amber (Cretaceous), hitherto known only from a single species. Here we significantly expand the known fossil record of Archaeognatha, and from the prolific Lower Cretaceous (Barremian) deposits of Lebanon. One new genus and species, Glaesimeinertellus intermedius gen. et sp. nov., and one new species, Macropsontus bachae sp. nov., are described and figured from Hammana amber, whereas one additional Macropsontus species, M. azari sp. nov., and one meinertellid morphotype are described and figured from Al-Rihan amber. The new taxa are compared with their modern and fossil relatives. Collectively, the new taxa render the Archaeognatha fauna from Lebanese amber the earliest with sufficient preservation to provide character data comparable to modern forms, highlighting the considerable morphological conservatism within the order.

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The first unique‐headed bug (Hemiptera, Enicocephalomorpha) from Cretaceous Iberian amber, and the Gondwanan connections of its palaeoentomological fauna

Davranoglou,

Pérez‐de la Fuente,

Baňař

et al. 2024

Papers in Palaeontology

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Enicocephalomorpha, also known as unique‐headed bugs, are a seldom‐collected infraorder of heteropteran insects whose evolutionary relationships have puzzled entomologists for more than a century. Unique‐headed bugs are exceptionally rare in the fossil record, which hinders our understanding of the morphological transformations of the lineage across time and also affects the calibration of molecular clock estimates used to date the origins of the infraorder. Here, we report the discovery of Enicocephalinus ibericus sp. nov. from Iberian amber in the Ariño deposit in Spain, early Albian (Early Cretaceous) in age. The new species represents the second oldest fossil enicocephalomorphan to date, and the second record of this infraorder from European deposits. Remarkably, the closest relative of E. ibericus is the congeneric E. acragrimaldii Azar from Lebanese amber that is c. 20 myr older (Barremian), indicating a long‐term persistence of the Enicocephalinus lineage across geological time. A review of the existing literature enabled us to record a total of 20 congeneric insect species that have been found in both Lebanese and Iberian ambers, suggesting the existence of previously underappreciated entomofaunal connections between southern Laurasia (the European archipelago) and northern Gondwana during the Cretaceous. We show that the palaeoentomological record holds remarkable potential for elucidating the faunistic exchanges and palaeobiogeographical patterns in the peri‐Tethyan region during the Cretaceous.

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New data on the age of the Lower Cretaceous amber outcrops of Lebanon

Cited by 60 publications

References 8 publications

Fossil Calibrations for the Arthropod Tree of Life

Fossil Calibrations for the Arthropod Tree of Life

Jumping bristletails (Insecta, Archaeognatha) from the Lower Cretaceous amber of Lebanon

The first unique‐headed bug (Hemiptera, Enicocephalomorpha) from Cretaceous Iberian amber, and the Gondwanan connections of its palaeoentomological fauna

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