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Morphological analysis reveals extensive intraspecific variation in fossil Balearic shrews, suggesting Nesiotites rafelinensis represents known variation within Nesiotites ponsi.
The earliest representative of Nesiotites from Cal d'en Rafelino (Mallorca) has been recently described as a new species (Nesiotites rafelinensis) based on a single hemimandible with p4-m3. A thorough inspection of large collections of different species of Nesiotites from the Balearic Islands reveals wide intraspecific morphological variation within these Plio-Pleistocene shrews. Six out of seven diagnostic characters of N. rafelinensis fall within the variability of the oldest species previously known, N. ponsi. We thus conclude that no traits sufficiently support the definition of a new species, and in our opinion this material should be better referred to N. ponsi or to a closely related form (N. aff. ponsi / N. cf. ponsi).
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Furió et al. (2013) studied this question.
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