Postcranial element shape and function: assessing locomotor mode in extant and extinct mustelid carnivorans

Schutz, Heidi; Guralnick, Robert

doi:10.1111/j.1096-3642.2007.00303.x

Cited by 56 publications

(67 citation statements)

References 35 publications

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“…Most of our LMs were Type II (i.e., tip of structure, local maxima or minima of a curve); a few were Type III (e.g., furthest extent measurement; Bookstein, 1991;Zelditch et al, 2004). All of our LMs are based on LMs in comparable studies (Table 5; Schutz and Guralnick, 2007;Milne et al, 2009;Steiner-Souza et al, 2010). We digitized six LMs (Figure 3.1; Table 5) on each specimen image using tpsDig version 2.17 (Rohlf, 2013a).…”

Section: Geometric Morphometricsmentioning

confidence: 99%

Mammalian distal humerus fossils from eastern Montana, USA with implications for the Cretaceous-Paleogene mass extinction and the adaptive radiation of placentals

DeBey

Wilson

2017

Palaeontologia Electronica

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Section: Geometric Morphometricsmentioning

confidence: 99%

Mammalian distal humerus fossils from eastern Montana, USA with implications for the Cretaceous-Paleogene mass extinction and the adaptive radiation of placentals

DeBey

Wilson

2017

Palaeontologia Electronica

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“…Locomotor and substrate preferences (L & SP) modes were adapted from Hildebrand (1988), Schutz & Guralnick (2007) and Van Valkenburgh (1987) as follows:…”

Section: Methodsmentioning

confidence: 99%

The forelimb of †Cyonasua sp. (Procyonidae, Carnivora): ecomorphological interpretation in the context of carnivorans

Tarquini

Toledo

Morgan

et al. 2015

Earth and Environmental Science Transactions of the Royal Socie

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The procyonid †Cyonasua is endemic to South America and recorded from the Late Miocene to the Early Pleistocene. This paper studies the forelimb of †Cyonasua sp. (late Pliocene of Miramar, Argentina), using an ecomorphological approach to infer morphological adaptations linked to substrate preference and locomotory mode, as well as to grasping and digging ability. Twenty linear measurements of forelimb and pectoral girdle were taken from †Cyonasua sp. and a sample of 87 specimens of extant carnivoran families (Procyonidae, Mustelidae, Ursidae, Viverridae, Canidae and Felidae). Raw values were transformed to minimise the effect of size. Morphological variation was explored by principal component analysis (PCA); substrate preference and locomotory mode were further analysed by multivariate analysis of variance (MAV) and discriminant analysis (DA); grasping and digging ability were analysed by DA. In the PCA morphospace, †Cyonasua sp. occupied a unique position, close to extant procyonids. DA classified it as non-specialised digger with poor grasping ability. The results lead to the interpretation of †Cyonasua sp. as having a moderately stabilised elbow joint with poor pronation-supination, although some climbing skills cannot be ruled out. Thus, †Cyonasua sp. could have had generalised habits, in agreement with reconstructed palaeoenvironmental conditions.

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“…Mustelidae, which show the greatest variation in locomotor mode (Baskin 1998;Schutz and Guralnick 2007), show a lack of phylogenetic clumping with regard to locomotion at Yellowstone, with substantial overlap with other families. The coexistence of a large number of mustelids at this site may therefore be in part due to their ability to overcome phylogenetic effects and spread into new niche space, reducing the effects of intrafamily competition.…”

Section: Family-level Analysesmentioning

confidence: 99%

A Novel Multiscale Assessment of Community Assembly across Time, Space, and Functional Niche

Meachen

Roberts²

2014

The American Naturalist

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A basic ecological tenet is that organisms in a community occupy different niches and have different traits, but how consistently competition, selection, and phylogenetic effects structure communities remains uncertain. Are all communities created equal? We examine how mammalian carnivoran communities are assembled with regard to mass, diet, and locomotion. Here, we use a multivariate nearest-neighbor framework to examine multiple North American localities spanning 3 million years to determine whether community assembly is consistent through time and four modern localities around the world to assess the effects of habitat. Additionally, we examined how trait patterns differ among families and how familylevel evolutionary effects affect them. We found some broadly consistent patterns, although differences are more pronounced than similarities. Diet is more affected by evolutionary constraints than by time or place. Locomotion is most affected by habitat, and the ability to partition niches is related to habitat heterogeneity. Mass is influenced by family, but also by habitat and the mass-selective extinction events at the end-Pleistocene. These findings indicate that assembly patterns are not largely determined by within-community interactions but instead show that each community is a product of its independent variables.

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Postcranial element shape and function: assessing locomotor mode in extant and extinct mustelid carnivorans

Cited by 56 publications

References 35 publications

Mammalian distal humerus fossils from eastern Montana, USA with implications for the Cretaceous-Paleogene mass extinction and the adaptive radiation of placentals

Mammalian distal humerus fossils from eastern Montana, USA with implications for the Cretaceous-Paleogene mass extinction and the adaptive radiation of placentals

The forelimb of †Cyonasua sp. (Procyonidae, Carnivora): ecomorphological interpretation in the context of carnivorans

A Novel Multiscale Assessment of Community Assembly across Time, Space, and Functional Niche

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