Pleistocene evolutionary trends in dental morphology of Mimomys

Lózano-Fernández, Iván; Agustı́, Jordi; Cuenca‐Bescós, Gloria; Blain, Hugues‐Alexandre; López-García, Juan Manuel; Vallverdú, Josep

doi:10.4000/quaternaire.6587

Cited by 16 publications

(11 citation statements)

References 32 publications

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“…This illustrates the distribution of the population means around the common static allometric slope (grey) and the comparison to the evolutionary slope estimate (dotted line) accounting for the sampling error and the expected among-population covariance structure. [25,26] could be the result of morphological divergence constrained along a static allometric line. Despite its large standard error, the evolutionary allometry is very close to the static allometry, indicating that the allometric-constraint hypothesis is not falsified in this case.…”

Section: Discussionmentioning

confidence: 99%

“…Static allometric relationships are estimated on log-transformed data using ordinary least-squares regression. been measured (in millimetres) for a total of 507 individuals as described by Lozano-Fernández et al [25]. The number of sampled individuals per population ranges from nine to 137 (median: 51).…”

Section: Materials and Methods (A) Samplesmentioning

confidence: 99%

“…We reanalysed data from Lozano-Fernández et al [25,26] describing 600 000 years of microevolutionary change of the first lower molar (M 1 ) dimensions of the rodent species Mimomys savini. This extint arvicoline is considered as the first representative of the water-vole lineage (genus Arvicola).…”

Section: Materials and Methods (A) Samplesmentioning

confidence: 99%

“…[21 -24]). In the following, we test the allometric-constraint hypothesis by estimating how the static allometry predicts the evolutionary allometry between molar traits in a recently described 600 000 yearlong fossil sequence for a Pleistocene arvicoline rodent species in the Iberian Peninsula [25,26].…”

Section: Introductionmentioning

confidence: 99%

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Walk the line: 600000 years of molar evolution constrained by allometry in the fossil rodent Mimomys savini

Firmat

Lózano-Fernández

Agustı́

et al. 2014

Phil. Trans. R. Soc. B

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The allometric-constraint hypothesis states that evolutionary divergence of morphological traits is restricted by integrated growth regulation. In this study, we test this hypothesis on a time-calibrated and well-documented palaeontological sequence of dental measurements on the Pleistocene arvicoline rodent species Mimomys savini from the Iberian Peninsula. Based on 507 specimens representing nine populations regularly spaced over 600 000 years, we compare static (within-population) and evolutionary (among-population) allometric slopes between the width and the length of the first lower molar. We find that the static allometric slope remains evolutionary stable and predicts the evolutionary allometry quite well. These results support the hypothesis that the macroevolutionary divergence of molar traits is constrained by static allometric relationships.

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Section: Discussionmentioning

confidence: 99%

Section: Materials and Methods (A) Samplesmentioning

confidence: 99%

Section: Materials and Methods (A) Samplesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Walk the line: 600000 years of molar evolution constrained by allometry in the fossil rodent Mimomys savini

Firmat

Lózano-Fernández

Agustı́

et al. 2014

Phil. Trans. R. Soc. B

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“…The Gran Dolina sediments have yielded ample fossil and archaeological remains: human remains, lithic tools, other vertebrates, as well as scarce pollen and seeds (Carbonell et al 1995;Sánchez-Marco 1999;Rodríguez et al 2011;Terradillos-Bernal and Rodríguez-Álvarez 2014;Saladié et al 2014;Allué et al 2015;Rodríguez-Hidalgo et al 2016;Bruner et al 2017). Small vertebrates have also been analysed to infer environmental and climatic changes, revealing an open landscape and a rather warmer and more humid environment during the deposition of the analysed level in the vicinity of the cave than today (Cuenca-Bescós et al 1995, 2001, 2005Blain et al 2008;Lozano-Fernández et al 2013). The importance of the Gran Dolina site resides in the amplitude of the sequence, covering the time lapse between 1 Ma and ka (Moreno et al 2015), and also in the recovering of a human fossil collection that enabled the description of the only human species discovered in the Iberian Peninsula, Homo antecessor (Bermúdez de Castro et al 1997).…”

Section: The Gran Dolina Sitementioning

confidence: 99%

Avian eggshell remains in the human bearing level TD6 of the Gran Dolina site (Early Pleistocene, Atapuerca, Spain)

2019

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The site of Gran Dolina (Atapuerca, Spain) has a 19-meter-thick Lower and Middle Pleistocene infilling, divided into eleven levels. This work is focused on the level TD6 (0.8-0.9Ma), consisting of a succession of debris flow and fluvial facies with a high diversity of vertebrates, including Homo antecessor. Here we describe for first time eggshell fragments from Atapuerca, recovered by screen washing of sediments from the excavations. The 22 eggshell fragments recovered are small and poorly preserved, with all material showing signs of abrasion. All eggshells have smooth outer surfaces, densely packed mammillae, and are multi-layered. Thus, they can be identified as avian eggshells. Most fragments were relatively well intact, with no signs of recrystallisation, as evidenced by cathodoluminescence analysis, however the degree of abrasion of the fragments hindered the identification of some ultrastructural characters. Three taxa have been identified: Charadriiformes, Gruidae and Anseriformes (all recorded in the TD6 assemblage by osteological remains). The association supports the presence of water bodies close to the site. The relatively high diversity of ootaxa in the small sample size analysed suggest that a wide range of the nesting species inhabited surrounding areas of Gran Dolina at the moment of accumulation of the TD6 level.

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Early Pleistocene palaeoenvironments at the time of the Homo antecessor settlement in the Gran Dolina cave (Atapuerca, Spain)

Blain

Cuenca‐Bescós

Burjachs

et al. 2013

J Quaternary Science

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Hominin remains unearthed from level TD6‐2 of Gran Dolina have been dated to slightly more than 0.8 Ma. Owing to the importance of this discovery, every effort is being made to reconstruct the environment where these hominins once lived. In this paper, the mutual climatic range and habitat weighting methods are applied to the herpetofaunal assemblages in order to estimate climatic and environmental parameters. TD6‐2 is thus characterized by a warm and humid climate. Mean annual temperature is estimated at 2.1°C higher than at present in Burgos, with a greater increase in temperature during summer (+3.1°C) than during winter (+1.4°C). Rainfall was more abundant than at present (+407.2 mm), occurring as at present principally during spring and autumn. Humid meadows and riparian woody habitats were common. The association between warm climatic conditions and the not fully developed forest suggests that the several episodes of high‐intensity occupation in TD6‐2 may correspond to a recolonization by Homo antecessor of the high inland plateaus of the Iberian Peninsula from the Mediterranean seashore, using the Ebro valley as a savannah‐type corridor after a cold glacial period. Copyright © 2013 John Wiley & Sons, Ltd.

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Pleistocene evolutionary trends in dental morphology of Mimomys

Abstract: Pleistocene evolutionary trends in dental morphology of Mimomys savini (Rodentia, Mammalia)

Cited by 16 publications

References 32 publications

Walk the line: 600000 years of molar evolution constrained by allometry in the fossil rodent Mimomys savini

Walk the line: 600000 years of molar evolution constrained by allometry in the fossil rodent Mimomys savini

Avian eggshell remains in the human bearing level TD6 of the Gran Dolina site (Early Pleistocene, Atapuerca, Spain)

Early Pleistocene palaeoenvironments at the time of the Homo antecessor settlement in the Gran Dolina cave (Atapuerca, Spain)

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