A Phylogenetic Study of Late Growth Events in a Mammalian Evolutionary Radiation—The Cranial Sutures of Terrestrial Artiodactyl Mammals

Bärmann, Eva V.; Sánchez‐Villagra, Marcelo R.

doi:10.1007/s10914-011-9176-8

Cited by 25 publications

(30 citation statements)

References 46 publications

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“…We detected more heterochronic shifts for species, genera and families than for high-level clades, a result that mirrors the patterns observed in previous studies focusing on sequence heterochrony in tetrapods (Werneburg et al, 2009;Weisbecker and Mitgutsch, 2010;Hautier et al, 2011;B€ armann and S anchez-Villagra, 2012;Goswami et al, 2013). The Parsimov analysis identified only a few heterochronies among the major groups of mammals examined (Table 4), except for the Boreoeutheria and the Laurasiatheria.…”

Section: Sequence and Heterochronysupporting

confidence: 87%

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Timing of cranial suture closure in placental mammals: Phylogenetic patterns, intraspecific variation, and comparison with marsupials

Rager

Hautier

Forasiepi

et al. 2013

Journal of Morphology

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Used as markers of postnatal growth closure sequences of 22 ectocranial sutures and synchondroses were recorded in a sample of 1161 skulls belonging to 38 species from all major placental clades: Afrotheria, Xenarthra, Laurasiatheria and Euarchontoglires (Boreoeutheria). The maximum closure level, which is not significantly correlated to body mass, is higher in Afrotheria and Xenarthra than in Boreoeutheria. Only the basioccipito-basisphenoid and the basioccipito-exoccipital synchondroses close in all species sampled, the supraoccipito-exoccipital and the inter-parietal sutures do in most species. Parsimov retrieved more heterochronic shifts for Afrotheria and Xenarthra than for Boreoeutheria. The amount of intraspecific variation differs among the species sampled being high among xenarthran species and low among afrotherians. Specimens (162) representing 12 marsupial genera were also analysed. Placentals exhibit a larger number of suture closures than marsupials and in both groups the sutures at the base of the skull are the first to fuse starting with the basioccipito-exoccipital. ABSTRACT Used as markers of postnatal growth closure sequences of 22 ectocranial sutures and synchondroses were recorded in a sample of 1161 skulls belonging to 38 species from all major placental clades: Afrotheria, Xenarthra, Laurasiatheria and Euarchontoglires (Boreoeutheria). The maximum closure level, which is not significantly correlated to body mass, is higher in Afrotheria and Xenarthra than in Boreoeutheria. Only the basioccipito-basisphenoid and the basioccipito-exoccipital synchondroses close in all species sampled, the supraoccipito-exoccipital and the inter-parietal sutures do in most species. Parsimov retrieved more heterochronic shifts for Afrotheria and Xenarthra than for Boreoeutheria. The amount of intraspecific variation differs among the species sampled being high among xenarthran species and low among afrotherians. Specimens (162) representing 12 marsupial genera were also analysed. Placentals exhibit a larger number of suture closures than marsupials and in both groups the sutures at the base of the skull are the first to fuse starting with the basioccipitoexoccipital. J. Morphol. 275:125-140, 2014.Wiley Periodicals, Inc.

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Section: Sequence and Heterochronysupporting

confidence: 87%

“…levels. Likewise, they reported a significant positive correlation between closure level and body mass in artiodactyls (B€ armann and S anchez-Villagra, 2012). In contrast, a weak and nonsignificant negative correlation between suture closure and skull length (a common proxy of body mass) was reported across Carnivora .…”

Section: Suture Closure Level and Sizementioning

confidence: 97%

Timing of cranial suture closure in placental mammals: Phylogenetic patterns, intraspecific variation, and comparison with marsupials

Rager

Hautier

Forasiepi

et al. 2013

Journal of Morphology

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“…In the past, several studies suggested that the appearance of the lacrimal bone might be used to differentiate mammalian taxa (Gregory, ; Knottnerus‐Meyer, ; Rütimeyer, ) and to reconstruct mammalian evolution and phylogenetic relationships (Gregory, ). Recently, the relative timing of the closure of lacrimal sutures was identified as yet another useful parameter to unravel ruminant phylogeny (Bärmann & Sánchez‐Villagra, ; Oh, Kim, Yasuda, Koyabu, & Kimura, ; Sánchez‐Villagra, ).…”

Section: Introductionmentioning

confidence: 99%

“…Recently, the relative timing of the closure of lacrimal sutures was identified as yet another useful parameter to unravel ruminant phylogeny (Bärmann & Sánchez-Villagra, 2012;Oh, Kim, Yasuda, Koyabu, & Kimura, 2017;Sánchez-Villagra, 2010).…”

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confidence: 99%

Variability, morphometrics, and co‐variation of the os lacrimale in Cervidae

Schilling

Calderón-Capote²,

Rößner

2019

Journal of Morphology

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In Ruminantia, the lacrimal bone forms a considerable part of the facial skeleton, and the morphology of its facial facet is highly variable when compared to other mammals. In this study, we quantify the species‐specific variability in size and shape of the lacrimal facial facet in species of Cervidae (deer) and relate it to systematics and various aspects of their ecology and behavior. We sampled 143 skull specimens from 10 genera; 12 Moschus and 3 Tragulus specimens were used as outgroups. We find that size and shape of the lacrimal facial facet allow differentiating most species analyzed here, except for Mazama gouazoubira and Capreolus capreolus. Size and shape of the lacrimal facial facet vary widely across Cervidae regardless of their systematic relationships, ecology or behavior. Thus, we could not detect a unique signature of adaptational criteria in lacrimal morphology. Our data indicate that the lacrimal facial facet scales allometrically with skull size, in particular, the lacrimojugal length scales positively and the lacrimomaxillar length scales negatively. However, correlation analyses did not reveal any differences in the integration of the lacrimal bone with any specific skull module in any of the species compared. Lastly, we could not ascertain any correlation between the size and position of the preorbital depression with the size and shape of the lacrimal facial facet. We conclude that the lacrimal facial facet is highly flexible and may rapidly adjust to its surrounding bones. Its allometric growth appears to be an example of exaptation: changes in size and shape in the context of the increase of the skull length provide lacrimal contacts, in particular, a lacrimojugal one, which may serve to reduce mechanical loads resulting from increasingly larger antlers in large cervids.

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“…those of some carnivoran mammals; Goswami et al. ; some ruminants; Bärmann & Sánchez‐Villagra, ; rhynchocephalians and lizards; Evans, ; Jones et al. ; snakes; Herring, ; or American alligators; Bailleul et al.…”

Section: Introductionmentioning

confidence: 99%

Comparative histology of some craniofacial sutures and skull‐base synchondroses in non‐avian dinosaurs and their extant phylogenetic bracket

Bailleul

Horner

2016

Journal of Anatomy

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Sutures and synchondroses, the fibrous and cartilaginous articulations found in the skulls of vertebrates, have been studied for many biological applications at the morphological scale. However, little is known about these articulations at the microscopic scale in non-mammalian vertebrates, including extant archosaurs (birds and crocodilians). The major goals of this paper were to: (i) document the microstructure of some sutures and synchondroses through ontogeny in archosaurs; (ii) compare these microstructures with previously published sutural histology (i.e. that of mammals); and (iii) document how these articulations with different morphological degrees of closure (open or obliterated) appear histologically. This was performed with histological analyses of skulls of emus, American alligators, a fossil crocodilian and ornithischian dinosaurs (hadrosaurids, pachycephalosaurids and ceratopsids). Emus and mammals possess a sutural periosteum until sutural fusion, but it disappears rapidly during ontogeny in American alligators. This study identified seven types of sutural mineralized tissues in extant and extinct archosaurs and grouped them into four categories: periosteal tissues; acellular tissues; fibrous tissues; and intratendinous tissues. Due to the presence of a periosteum in their sutures, emus and mammals possess periosteal tissues at their sutural borders. The mineralized sutural tissues of crocodilians and ornithischian dinosaurs are more variable and can also develop via a form of necrosis for acellular tissues and metaplasia for fibrous and intratendinous tissues. It was hypothesized that non-avian dinosaurs, like the American alligator, lacked a sutural periosteum and that their primary mode of ossification involved the direct mineralization of craniofacial sutures (instead of intramembranous ossification found in mammals and birds). However, we keep in mind that a bird-like sutural microstructure might have arisen within non-avian saurichians. While synchondroseal histology is relatively similar in archosaurs and mammals, the microstructural differences between the sutures of these two clades are undeniable. Moreover, the current results suggest that the degree of sutural closure can only accurately be known via microstructural analyses. This study sheds light on the microstructure and growth of archosaurian sutures and synchondroses, and reveals a unique, undocumented histological diversity in non-avian dinosaur skulls.

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A Phylogenetic Study of Late Growth Events in a Mammalian Evolutionary Radiation—The Cranial Sutures of Terrestrial Artiodactyl Mammals

Cited by 25 publications

References 46 publications

Timing of cranial suture closure in placental mammals: Phylogenetic patterns, intraspecific variation, and comparison with marsupials

Timing of cranial suture closure in placental mammals: Phylogenetic patterns, intraspecific variation, and comparison with marsupials

Variability, morphometrics, and co‐variation of the os lacrimale in Cervidae

Comparative histology of some craniofacial sutures and skull‐base synchondroses in non‐avian dinosaurs and their extant phylogenetic bracket

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