Cluster analysis and phylogenetics of five species of Ctenodactylidae (Rodentia)

George, Wilma

doi:10.1515/mamm.1985.49.1.53

Cited by 5 publications

(8 citation statements)

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“…Wood (1977) suggested that Pectinator spekei seemed derivable from Africanomys and Metasayimys, an opinion with which we agree. As defended by some authors (Jaeger 1971;George 1979George , 1985, Pectinator spekei is the most basal of the living species of Ctenodactylinae. This taxon shares an exclusive common ancestor with the species of the Ihroudia clade and the more derived ctenodactylines.…”

Section: The Genus Africanomysmentioning

confidence: 98%

“…The resulting unrooted phenogram (Fig. 6A) showed the shorter distance between Pectinator spekei and George (1985) including the five extant species of Ctenodactylinae; D, clade of the strict consensus tree generated by the cladistic analysis carried out by Wible et al, (2005) showing the relationships of three ctenodactylines.…”

Section: Phylogenetic Analysismentioning

confidence: 99%

“…As F. vae and C. gundi are the farthest apart, the mid-point rooting method gave a phenogram with the following topology: ((P. spekei, C. vali) (M. mzabi and F. vae)). George (1985). George (1985) conducted the first cladistic analysis of ctenodactylids.…”

Section: Phylogenetic Analysismentioning

confidence: 99%

“…George (1985). George (1985) conducted the first cladistic analysis of ctenodactylids. She included all five extant species and considered 28 characters from a diversity of fields (gross anatomy, physiology, karyotype, behaviour, etc.).…”

Section: Phylogenetic Analysismentioning

confidence: 99%

“…She noted that "the decision about the derived apomorphic status or the plesiomorphic status of each character was based on fossil evidence where possible or by comparing the character with its state in other mammals" (George 1985, p. 56) and added that the cladogram was "constructed as a result of decisions (some of them arbitrary) on the status [of these characters]" (George 1985, p. 58). George (1985) found a single, fully resolved most parsimonious tree in which Pectinator spekei is the sister group to a symmetrical clade comprising Felovia vae and Massoutiera mzabi on one hand and the two Ctenodactylus species on the other (Fig. 6C).…”

Section: Phylogenetic Analysismentioning

confidence: 99%

See 4 more Smart Citations

A comprehensive phylogeny of the gundis (Ctenodactylinae, Ctenodactylidae, Rodentia)

López‐Antoñanzas

Knoll

2011

Journal of Systematic Palaeontology

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Section: The Genus Africanomysmentioning

confidence: 98%

Section: Phylogenetic Analysismentioning

confidence: 99%

Section: Phylogenetic Analysismentioning

confidence: 99%

Section: Phylogenetic Analysismentioning

confidence: 99%

Section: Phylogenetic Analysismentioning

confidence: 99%

See 3 more Smart Citations

A comprehensive phylogeny of the gundis (Ctenodactylinae, Ctenodactylidae, Rodentia)

López‐Antoñanzas

Knoll

2011

Journal of Systematic Palaeontology

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A new framework of the evolution of the ctenodactylids (Mammalia: Rodentia) in Asia: new species and phylogenetic status of distylomyins

Oliver,

Carro-Rodríguez,

López-Guerrero

et al. 2023

Zoological Journal of the Linnean Society

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Two new species of ctenodactylid rodents, Prodistylomys taatsinius sp. nov. and Prodistylomys mongoliensis sp. nov., are described from the Valley of Lakes, Central Mongolia. They represent the first record of this genus in Mongolia. Prodistylomys is characterized by a simple dental pattern and high hypsodonty, reflecting an adaptation for tough vegetation in a dry environment, which is congruent with the aridification event that took place during the Late Oligocene and Early Miocene. We performed the most complete phylogenetic analysis combining the largest sampling in the family Ctenodactylidae and the best-represented stratigraphical distribution for the sample. This allowed us to propose that the origin of ctenodactylids lies in East Asia during the Eocene, and after that, the group dispersed through western Asia, Europe, and Africa. The presence of several similar rodent taxa in Mongolia, Kazakhstan, and China confirms that these areas were part of a large bioprovince covering most of central Asia during the Oligocene and Early Miocene.

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Ontogenetic variations and structural adjustments in mammals evolving prolonged to continuous dental growth

et al. 2017

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Studying dental ontogeny in mammals can provide valuable insight on the evolution of their masticatory apparatus and their related adaptations. The multiple acquisitions of a prolonged to continuous growth of teeth in herbivorous mammals in response to high abrasion represent an intensively investigated issue. However, the ontogenetic and architectural patterns associated with these repeated dental innovations remain poorly known. Here, we focused on two case studies corresponding to distant mammalian clades, the extinct Mesotheriidae (Notoungulata), which shared some striking dental features with the extant Ctenodactylidae (Rodentia). We studied the impact of prolonged to continuous growth of molars on their occlusal complexity, their relative size and their dynamics in the jaw. We found that variations of occlusal complexity patterns are the result of paedomorphic or peramorphic heterochronic processes impacting dental crown. We showed that variations in both upper and lower molar proportions generally follow the inhibitory developmental cascade model. In that context, prolonged dental growth implies transitory adjustments due to wear, and also involves dental migration and loss when combined with molar lengthening. Interestingly, these features may be present in many mammals having prolonged dental growth, and emphasize the crucial need of considering these aspects in future evolutionary and developmental studies.

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Cluster analysis and phylogenetics of five species of Ctenodactylidae (Rodentia)

Cited by 5 publications

References 0 publications

A comprehensive phylogeny of the gundis (Ctenodactylinae, Ctenodactylidae, Rodentia)

A comprehensive phylogeny of the gundis (Ctenodactylinae, Ctenodactylidae, Rodentia)

A new framework of the evolution of the ctenodactylids (Mammalia: Rodentia) in Asia: new species and phylogenetic status of distylomyins

Ontogenetic variations and structural adjustments in mammals evolving prolonged to continuous dental growth

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