Lagerstätte effect drives notosuchian palaeodiversity (Crocodyliformes, Notosuchia)

Celis, Ane de; Narváez, Iván; Arcucci, Andrea B.; Ortega, Francisco

doi:10.1080/08912963.2020.1844682

Cited by 10 publications

(13 citation statements)

References 61 publications

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“…Most analyses recover Simosuchus as an early diverging ziphosuchian (e.g. [6,85,105,141]; this study). The large-bodied Ma.…”

Section: Late Cretaceousmentioning

confidence: 81%

“…[25]) and Neosuchia (e.g. [105,120]). Following the definition of Peirosauridae provided by Geroto & Bertini [85], our analyses recover Stolokrosuchus as the earliest diverging member of this clade, which is consistent with previous analyses that have continued to place it close to the 'base' of Metasuchia.…”

Section: Early Cretaceousmentioning

confidence: 99%

“…Characters with missing entries were downweighted faster assuming 50% of the homoplasy of observed entries, and weighting strength did not exceed 5 times that of characters with no missing entries. Forty-three characters representing nested sets of homologies were ordered (1,3,6,10,23,37,43,44,45,49,65,67,69,71,73,77,79,86,90,91,96,97,105,116,126,140,142,143,149,167,182,187,193,197,226,228,279,339,356,357,364,368,401). Character 5 was made inactive due to 'dependence with the modified definition of character 6' ( [6]: supplementary information, p. 3).…”

Section: Dentitionmentioning

confidence: 99%

“…During the Mesozoic, notosuchians (sensu [6]) were the most diverse clade of Gondwanan crocodyliforms [105], although this high species richness varied through both time and space [7,106].…”

Section: Gondwanan Notosuchian Diversity Outside Of South Americamentioning

confidence: 99%

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A second peirosaurid crocodyliform from the Mid-Cretaceous Kem Kem Group of Morocco and the diversity of Gondwanan notosuchians outside South America

et al. 2021

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Notosuchians are an extinct clade of terrestrial crocodyliforms with a particularly rich record in the late Early to Late Cretaceous (approx. 130–66 Ma) of Gondwana. Although much of this diversity comes from South America, Africa and Indo-Madagascar have also yielded numerous notosuchian remains. Three notosuchian species are currently recognized from the early Late Cretaceous (approx. 100 Ma) Kem Kem Group of Morocco, including the peirosaurid Hamadasuchus rebouli . Here, we describe two new specimens that demonstrate the presence of at least a fourth notosuchian species in this fauna. Antaeusuchus taouzensis n. gen. n. sp. is incorporated into one of the largest notosuchian-focused character-taxon matrices yet to be compiled, comprising 443 characters scored for 63 notosuchian species, with an increased sampling of African and peirosaurid species. Parsimony analyses run under equal and extended implied weighting consistently recover Antaeusuchus as a peirosaurid notosuchian, supported by the presence of two distinct waves on the dorsal dentary surface, a surangular which laterally overlaps the dentary above the mandibular fenestra, and a relatively broad mandibular symphysis. Within Peirosauridae, Antaeusuchus is recovered as the sister taxon of Hamadasuchus . However, it differs from Hamadasuchus with respect to several features, including the ornamentation of the lateral surface of the mandible, the angle of divergence of the mandibular rami, the texture of tooth enamel and the shape of the teeth, supporting their generic distinction. We present a critical reappraisal of the non-South American Gondwanan notosuchian record, which spans the Middle Jurassic–late Eocene. This review, as well as our phylogenetic analyses, indicate the existence of at least three approximately contemporaneous peirosaurid lineages within the Kem Kem Group, alongside other notosuchians, and support the peirosaurid affinities of the ‘trematochampsid’ Miadanasuchus oblita from the Maastrichtian of Madagascar. Furthermore, the Cretaceous record demonstrates the presence of multiple lineages of approximately contemporaneous notosuchians in several African and Madagascan faunas, and supports previous suggestions regarding an undocumented pre-Aptian radiation of Notosuchia. By contrast, the post-Cretaceous record is depauperate, comprising rare occurrences of sebecosuchians in north Africa prior to their extirpation.

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“…Most analyses recover Simosuchus as an early diverging ziphosuchian (e.g. [6,85,105,141]; this study). The large-bodied Ma.…”

Section: Late Cretaceousmentioning

confidence: 81%

Section: Early Cretaceousmentioning

confidence: 99%

Section: Dentitionmentioning

confidence: 99%

Section: Gondwanan Notosuchian Diversity Outside Of South Americamentioning

confidence: 99%

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A second peirosaurid crocodyliform from the Mid-Cretaceous Kem Kem Group of Morocco and the diversity of Gondwanan notosuchians outside South America

et al. 2021

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“…The majority of work on vertebrate diversity through time focuses on either individual taxonomic groups of tetrapods (e.g. Alroy, 2009;Benson et al, 2010;Butler et al, 2011;Mannion et al, 2011Mannion et al, , 2019Brocklehurst, Kammerer and Fröbisch, 2013;Butler, Benson and Barrett, 2013;Pearson et al, 2013;Cleary et al, 2015Cleary et al, , 2018Cleary et al, , 2020Bennett et al, 2018;Cantalapiedra, Domingo and Domingo, 2018;Brown et al, 2019;Driscoll et al, 2019;Celis et al, 2020;Cantalapiedra et al, 2021) and fishes (Sallan & Coates, 2010;Koot, 2013;Lloyd & Friedman, 2013;Sansom, Randle, & Donoghue, 2015;Romano et al, 2016), or more recently large scale analyses of all tetrapods (Sahney, Benton, & Ferry, 2010;Close et al, 2017Close et al, , 2019Close et al, , 2020aDunne et al, 2018;Dunne, 2020) using large publicly available databases such as the Paleobiology Database (PBDB; paleobiodb.org). Critically, these studies are often able to identify biases and gaps in the fossil record, allowing insight into evolutionary dynamics in deep time and the assembly of ancient and modern ecosystems.…”

mentioning

confidence: 99%

The early diversification of ray-finned fishes (Actinopterygii): hypotheses, challenges and future prospects

Henderson¹,

Dunne²,

Fasey³

et al. 2022

Preprint

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Actinopterygii are the most speciose living vertebrate clade, and study of fossil members during their Palaeozoic rise to dominance has a long history of descriptive work. Although research interest into Palaeozoic actinopterygians has increased in recent years, broader patterns of diversity and diversity dynamics remain critically understudied. Past studies have investigated macroevolutionary trends in Palaeozoic actinopterygians in a piecemeal fashion, variably using existing compendia of vertebrates or literature-based searches, and there is no comprehensive occurrence-based dataset of actinopterygians spanning the whole of the Palaeozoic. Past studies typically show low levels of diversity in the Devonian with a substantial rise in the early Carboniferous in the aftermath of the end-Devonian mass extinction. However there are unresolved patterns reported for the later Carboniferous and Permian. In large part, these conflicts span from a lack of publicly-available occurrence data: actinopterygians are majorly underrepresented in the Paleobiology Database (PBDB), for example, obscuring patterns of diversity through time. This is exacerbated by major taxonomic problems pervading the Palaeozoic actinopterygian record. Innumerable taxa are lumped into wide-ranging families and poorly-formulated genera, with a vast number of described species concentrated in several particularly problematic ‘waste-basket’ genera. This taxonomic confusion feeds into a limited understanding of phylogenetic relationships. There is also a heavy sampling bias towards Europe and North America, with other regions underrepresented despite yielding important occurrences. Scrutiny of the extent to which spatial biases influence the record is lacking, as is research on other forms of bias. Low richness in some time periods may be linked to geological biases, while the effect of taphonomic biases on Palaeozoic actinopterygians have not yet been investigated. Efforts are already underway to both redescribe poorly defined taxa and describe taxa from underrepresented regions, helping address taxonomic issues and accuracy of occurrence data. New methods of sampling standardisation utilising up-to-date occurrence databases will be critical in teasing apart biological changes in diversity from those resulting from bias. Lastly, continued phylogenetic work will enable the use of phylogenetic comparative methods to elucidate the origins of actinopterygian biogeography and subsequent patterns of radiation throughout their rise to dominate aquatic faunas.

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A new Pissarrachampsinae specimen from the Bauru Basin, Brazil, adds data to the understanding of the Baurusuchidae (Mesoeucrocodylia, Notosuchia) distribution in the Late Cretaceous of South America

Darlim

Carvalho

Tavares³

et al. 2021

Cretaceous Research

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Lagerstätte effect drives notosuchian palaeodiversity (Crocodyliformes, Notosuchia)

Cited by 10 publications

References 61 publications

A second peirosaurid crocodyliform from the Mid-Cretaceous Kem Kem Group of Morocco and the diversity of Gondwanan notosuchians outside South America

A second peirosaurid crocodyliform from the Mid-Cretaceous Kem Kem Group of Morocco and the diversity of Gondwanan notosuchians outside South America

The early diversification of ray-finned fishes (Actinopterygii): hypotheses, challenges and future prospects

A new Pissarrachampsinae specimen from the Bauru Basin, Brazil, adds data to the understanding of the Baurusuchidae (Mesoeucrocodylia, Notosuchia) distribution in the Late Cretaceous of South America

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