The systematics of Geotrypus is among the most debated within Talpidae, but the recent development of quantitative methods for shape analyses allows us to provide a thorough reconsideration of Geotrypus spp. In the present study, we perform a systematic revision of the species Geotrypus minor from the early Oligocene of Germany using two-dimensional geometric morphometrics on the humerus, and cladistic analyses using two different character matrices. Our results suggest a distinct generic allocation for this species based on its unique humeral shape. Cladistic analyses reveal that G. minor has closer phylogenetic relationships with urotrichine shrew-moles than with other Geotrypus species or highly fossorial moles. Quantitative methods applied in this study support qualitative observations and fully justify a new generic allocation. In light of these results, Tegulariscaptor gen. nov. is proposed to encompass the material previously assigned to G. minor.http://zoobank.org/urn:lsid:zoobank.org:pub:8A839F1E-0EC8-4799-B3AE-1A4E54A95F0E
When moles became diggers: Tegulariscaptor gen. nov., from the early Oligocene of south Germany, and the evolution of talpid fossoriality / Sansalone, Gabriele; Kotsakis, Anastassios; Schwermann, A. H.; HOEK OSTENDE, L. W. VAN DEN .; Piras, P.. - In: JOURNAL OF SYSTEMATIC PALAEONTOLOGY. - ISSN 1477-2019. - 16:8(2018), pp. 645-657. [10.1080/14772019.2017.1329235]
When moles became diggers: Tegulariscaptor gen. nov., from the early Oligocene of south Germany, and the evolution of talpid fossoriality
SANSALONE, GABRIELE;KOTSAKIS, Anastassios;
2018
Abstract
The systematics of Geotrypus is among the most debated within Talpidae, but the recent development of quantitative methods for shape analyses allows us to provide a thorough reconsideration of Geotrypus spp. In the present study, we perform a systematic revision of the species Geotrypus minor from the early Oligocene of Germany using two-dimensional geometric morphometrics on the humerus, and cladistic analyses using two different character matrices. Our results suggest a distinct generic allocation for this species based on its unique humeral shape. Cladistic analyses reveal that G. minor has closer phylogenetic relationships with urotrichine shrew-moles than with other Geotrypus species or highly fossorial moles. Quantitative methods applied in this study support qualitative observations and fully justify a new generic allocation. In light of these results, Tegulariscaptor gen. nov. is proposed to encompass the material previously assigned to G. minor.http://zoobank.org/urn:lsid:zoobank.org:pub:8A839F1E-0EC8-4799-B3AE-1A4E54A95F0EFile | Dimensione | Formato | |
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