The Impact of Tooth Wear on Occlusal Shape and the Identification of Fossils of New World Porcupines (Rodentia: Erethizontidae)

Vitek, Natasha; Chen, Hui

doi:10.1007/s10914-022-09601-z

Cited by 2 publications

(1 citation statement)

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“…Previously, these methods have been used to study only the skulls of modern zokor species, not individual molars and fragmented fossil specimens (Puzachenko et al, 2009(Puzachenko et al, , 2013Butkauskas et al, 2020;Kang et al, 2021Kang et al, , 2023. Geometric morphometric analyses of isolated teeth have been widely used for species identification in other groups of rodents (McGuire, 2011;Calede and Glusman, 2017;Smith and Wilson, 2017;Wyatt et al, 2021;Vitek and Chen, 2022). Because this technique has not been previously used in zokors, one goal of our study is to evaluate the potential of geometric morphometrics to enable the taxonomic identification of zokor molars.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the West Siberian lineage of zokors (Mammalia, Rodentia, Spalacidae, Myospalacinae) and divergence in molar development

Golovanov,

Zazhigin

2023

J. Paleontol.

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Zokors (Myospalacinae) continue to be the center of systematics discussions. Phylogenetic schemes based on molecular data do not always agree with each other, nor can phylogenetic schemes based on paleontological material be complete due to the only-partial description of West Siberian zokors. This paper tries to fill this gap and presents a description of the West Siberian lineage from the late early Pleistocene to the present, together with an analysis of molar development in other zokor lineages. We describe two new species and one subspecies (Myospalax myospalax krukoveri n. ssp., Myospalax convexus n. sp., Prosiphneus razdoleanensis n. sp.) ancestral to the extant Myospalax myospalax Laxmann, 1769. We also reveal differences in the ontogeny of molars of modern species that were not previously detailed. These differences, together with paleontological data, indicate that in the West Siberian lineage, peramorphosis occurred in the structure of the chewing surface (with the exception of the lower m1), whereas in all other zokor lineages, there was pedomorphosis. On the basis of these results, we suggest a new view on the systematics of Myospalacinae. UUID: http://zoobank.org/b06d6c99-1648-454b-9b95-4d869bfe8bdc

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