An overview of the ilium of anurans (Lissamphibia, Salientia), with a critical appraisal of the terminology and primary homology of main ilial features

Gómez, Raúl O.; Turazzini, Guillermo F.

doi:10.1080/02724634.2015.1030023

Cited by 51 publications

(46 citation statements)

References 38 publications

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“…). The bone crest surface areas correspondent to the muscle insertions were also measured, including: the dorsal tubercle (=tuber superius=tuber superior=processus superior; Gómez & Turazzini, ), the dorsal crest (=Crista dorsalis) and urostylar crests (Fig. ).…”

Section: Methodsmentioning

confidence: 99%

“…The terminology used for postcranial osteology follows Trueb (). Gómez & Turazzini () were referenced for the ilial terminology. To collect osteological data, the specimens were cleared and stained following the protocol from Wassersug ().…”

Section: Methodsmentioning

confidence: 99%

“…The terminology for pelvic and hindlimbs muscles was taken from Diogo & Ziermann (2014) and Diogo & Molnar (2014). The terminology used for postcranial osteology follows Trueb (1973). G omez & Turazzini (2015 were referenced for the ilial terminology.…”

Section: Morphometric Datamentioning

confidence: 99%

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Phylogenetic patterns and correlation of key structures for jumping: bone crests and cross‐sectional areas of muscles in Leptodactylus (Anura, Leptodactylidae)

2018

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Anurans are characterized by their saltatory mode of locomotion, which is associated with a specific morphology. The coordinated action of the muscles and bones of the pelvic girdle is key to the transmission of the force of the hindlimbs to the axial skeleton during jumping. Two features are critical for optimal locomotory performance: the cross-sectional area of muscle and the bone crest attachment sites. The first character is a proxy of the force exerted by the muscle, whereas the crests are muscle attachments sites related to muscle force. The provisory relationship between these features has previously been identified and bone crest size can be used to infer the magnitude and, therefore, muscle force in fossils records. In this work, we explore the correlation between the cross-sectional area of essential muscles to the jumping mechanism (longissimus dorsi, extensor iliotibialis B, tenuissimus, puboischiofemoralis internus B, coccygeo-sacralis and coccygeo-iliacus) and the bone crests where these muscles are inserted (dorsal tubercle, dorsal crest and urostylar crest) in species of the genus Leptodactylus. This genus, along with other leptodactylids, exhibits a diversity of locomotor modes, including jumping, hopping, swimming and burrowing. We therefore analyzed the morphometric variation in the two features, cross-sectional area and bone crest area, expecting a correlation with different locomotor types. Our results showed: (i) a correlation between the urostylar crest and the cross-sectional area of the related muscles; (ii) that the bone crest surface area of urostyle and ilium and the cross-sectional area of the corresponding muscles can be utilized to infer locomotor faculties in leptodactylid frogs; and (iii) that the evolution of both characters demonstrates a general tendency from lower values in leptodactylid ancestors to higher values in the Leptodactylus genus. The results attest to the importance of the comparison of current ecological and phylogenetic analogues as they allow us to infer functionality and behavior in fossil and extant groups based on skeletal evidence. Phylogenetic patterns in character evolution and their correlation with locomotory types could imply that functional restrictions are also inherited in leptodactylid.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Phylogenetic patterns and correlation of key structures for jumping: bone crests and cross‐sectional areas of muscles in Leptodactylus (Anura, Leptodactylidae)

2018

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“…It is worth noting that, although a part of the ilium is preserved in the 'mummy' of T. gezei, it is not possible to rank this bone among the post-cranial elements of Thaumastosaurus whose morphology is known. Ilia are among the most frequently recovered anuran bones and among the most useful ones for purposes of identification (Roček et al 2013, Gómez andTurazzini 2016). Unfortunately, in T. gezei only the anterior extremity of one ilium is known, and it shows only that the shaft bears a medially inclined dorsal crest (Laloy et al 2013).…”

Section: Family Indeterminatementioning

confidence: 99%

“…Rare vertebrae from Eocene localities, show an overall morphology consistent with bufonids (Rage and Vergnaud-Grazzini 1978), but this morphology may also occur in other taxa. On the other hand, the anteroposterior extent of the pars descendens on ilia is reminiscent of Microhylidae (e.g., Nokariya 1983, Lehr and Trueb 2007, Gómez and Turazzini 2016. Such a pars descendens may be the reason for Sanchiz (1998)'s report of Microhylidae from Escamps (MP 19) as 'undescribed material from the French Eocene'.…”

Section: Problematic Taxamentioning

confidence: 99%

Frogs (Amphibia, Anura) from the Eocene and Oligocene of the Phosphorites du Quercy (France). An overview

Rage¹

2016

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Fossil bats are described from deposits of the Upper Freshwater Molasse of the Forsthart and Rembach sites in East Bavaria of South Germany (MN 4). The material comprises 13 fragments, representing at least six different species, all belonging to Vespertilionidae. A fossil form from Rembach, close to the Oriental clade of Hesperoptenus, represents the fi rst and oldest fossil record of this clade in Europe. The assignment of bat records to extant Oriental clades Hesperoptenus and Submyotodon in Rembach, as well as different forms of Miostrellus in Forsthart indicate considerable diversity in Early Miocene vespertilionid bats, and have exciting palaeobiogeographic implications. Fossils are discussed in regards to taxonomic, stratigraphic and palaeoecological signifi cance.

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A geometric morphometric analysis of variation in Australian frog ilia and taxonomic interpretations

Farman,

Archer,

Hand

2023

Journal of Morphology

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Anurans including frogs and toads exhibit an ilium that is often regarded as taxonomically diagnostic. The ilium, one of the three paired bones that make up the pelvic girdle, has been important in the fossil record for identifying anuran morphotypes. Osteological collections for Australian frogs are rare in herpetological museums, and skeletonizing whole‐bodied specimens requires destroying soft tissue morphology which is valuable to anuran specialists working on living species. Computed tomography scans provide the opportunity to study anuran osteology without the loss of soft tissues. Our study, based on microcomputed tomography scans of extant Australian frogs from the public repository Morphosource and from museum collections focuses on the morphological differences between Australian frogs at the familial and generic levels using geometric morphometrics to compare the diagnostic shape of the ilium. Principal component analysis (PCA) and canonical variate analysis (CVA) were conducted to assess differences in the ilium between supraspecific groups of Australian frogs. The canonical variates analysis accurately predicted group membership (i.e., the correct family) with up to 76.2% success for cross‐validated predictions and 100% of original group predictions. While the sample was limited to familial and generic level analyses, our research shows that ilial morphology in Australian frogs is taxonomically informative. This research provides a guide for identifying Australian anurans, including fossils, as well as new information relevant to considerations about their phylogenetic relationships, and the potential use of the fossil record to enhance efforts to conserve threatened living frog species.

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An overview of the ilium of anurans (Lissamphibia, Salientia), with a critical appraisal of the terminology and primary homology of main ilial features

Cited by 51 publications

References 38 publications

Phylogenetic patterns and correlation of key structures for jumping: bone crests and cross‐sectional areas of muscles in Leptodactylus (Anura, Leptodactylidae)

Phylogenetic patterns and correlation of key structures for jumping: bone crests and cross‐sectional areas of muscles in Leptodactylus (Anura, Leptodactylidae)

Frogs (Amphibia, Anura) from the Eocene and Oligocene of the Phosphorites du Quercy (France). An overview

A geometric morphometric analysis of variation in Australian frog ilia and taxonomic interpretations

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