Three-dimensional mobility and muscle attachments in the pectoral limb of the Triassic cynodont Massetognathus pascuali (Romer, 1967).

Abstract:

:The musculoskeletal configuration of the mammalian pectoral limb has been heralded as a key anatomical feature leading to the adaptive radiation of mammals, but limb function in the non-mammaliaform cynodont outgroup remains unresolved. Conflicting reconstructions of abducted and adducted posture are based on mutually incompatible interpretations of ambiguous osteology. We reconstruct the pectoral limb of the Triassic non-mammaliaform cynodont Massetognathus pascuali in three dimensions, by combining skeletal morphology from micro-computed tomography with muscle anatomy from an extended extant phylogenetic bracket. Conservative tests of maximum range of motion suggest a degree of girdle mobility, as well as substantial freedom at the shoulder and the elbow joints. The glenoid fossa supports a neutral pose in which the distal end of the humerus points 45° posterolaterally from the body wall, intermediate between classically 'sprawling' and 'parasagittal' limb postures. Massetognathus pascuali is reconstructed as having a near-mammalian complement of shoulder muscles, including an incipient rotator cuff (m. subscapularis, m. infraspinatus, m. supraspinatus, and m. teres minor). Based on close inspection of the morphology of the glenoid fossa, we hypothesize a posture-driven scenario for the evolution of the therian ball-and-socket shoulder joint. The musculoskeletal reconstruction presented here provides the anatomical scaffolding for more detailed examination of locomotor evolution in the precursors to mammals.

journal_name

J Anat

journal_title

Journal of anatomy

authors

Lai PH,Biewener AA,Pierce SE

doi

10.1111/joa.12766

subject

Has Abstract

pub_date

2018-03-01 00:00:00

pages

383-406

issue

3

eissn

0021-8782

issn

1469-7580

journal_volume

232

pub_type

杂志文章
  • Feeding biomechanics of the cownose ray, Rhinoptera bonasus, over ontogeny.

    abstract::Growth affects the performance of structure, so the pattern of growth must influence the role of a structure and an organism. Because animal performance is linked to morphological specialization, ontogenetic change in size may influence an organism's biological role. High bite force generation is presumably selected f...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:10.1111/joa.12342

    authors: Kolmann MA,Huber DR,Motta PJ,Grubbs RD

    更新日期:2015-09-01 00:00:00

  • Patterns of morphological variation within myelin internodes of normal peripheral nerve: quantitative analysis by confocal microscopy.

    abstract::Knowledge of variations in the morphology of normal myelinated peripheral nerve fibres is fundamental to subsequent interpretation of neuropathology. It would be advantageous for structural analysis of normal variations to be based on entire myelin internodes, but acquisition of such data via the classic approach of n...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:

    authors: Reynolds RJ,Heath JW

    更新日期:1995-10-01 00:00:00

  • Corticofugal axons from adjacent 'barrel' columns of rat somatosensory cortex: cortical and thalamic terminal patterns.

    abstract::The cortical representations of the vibrissae of the rat form a matrix in which each whisker has its own area of cortex, called a 'barrel'. The afferent pathways from the periphery travel first to the trigeminal nuclei and thence via the ventroposteromedial thalamus (VPM) to the cortical barrels have been described in...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:10.1046/j.1469-7580.2000.19630379.x

    authors: Wright AK,Norrie L,Arbuthnott GW

    更新日期:2000-04-01 00:00:00

  • Alx4 and Msx2 play phenotypically similar and additive roles in skull vault differentiation.

    abstract::Alx4 and Msx2 encode homeodomain-containing transcription factors that show a clear functional overlap. In both mice and humans, loss of function of either gene is associated with ossification defects of the skull vault, although the major effect is on the frontal bones in mice and the parietal bones in humans. This s...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:10.1111/j.0021-8782.2004.00304.x

    authors: Antonopoulou I,Mavrogiannis LA,Wilkie AO,Morriss-Kay GM

    更新日期:2004-06-01 00:00:00

  • NADH-O2 oxidoreductase activity and mRNA expression of complex I (51 kDa, ND1) in postnatal intrinsic muscle of rat tongue.

    abstract::Complex I is one of the respiratory chain enzymes related to NADH dehydrogenase and is an encoded gene product derived from both nuclear and mitochondrial genomes. Transcription levels of ND1 (mitochondrial) and 51 kDa (nuclear) subunits of complex I in the postnatal development of the intrinsic muscle in rat tongues ...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:10.1046/j.1469-7580.2003.00152.x

    authors: Fujita T,Sato I

    更新日期:2003-02-01 00:00:00

  • Three-dimensional sonographic evaluation of the fetal lumbar spinal canal.

    abstract::In a prospective cross-sectional ultrasound study the size of the fetal lumbar spinal canal was evaluated to determine reference values for the lumbar part of the vertebral canal. One hundred and sixty-seven pregnant women undergoing routine obstetric ultrasound were studied between 16 and 41 weeks of gestation. Exclu...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:10.1046/j.1469-7580.2002.00048.x

    authors: Wallny T,Schild RL,Fimmers R,Hansmann ME

    更新日期:2002-05-01 00:00:00

  • A light and electron microscopic study of feline intrapulmonary ganglia.

    abstract::Fluorescence microscopy and transmission electron microscopy were used to study peribronchial ganglia of cats. An osmiophilic substance that is selectively taken up into the synaptic vesicles of adrenergic nerves (5-hydroxydopamine) was used to help differentiate adrenergic and non-adrenergic terminals. Peribronchial ...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:

    authors: Knight DS

    更新日期:1980-10-01 00:00:00

  • Characteristics of the transverse 2D uniserial arrangement of rows of decussating enamel rods in the inner enamel layer of mouse mandibular incisors.

    abstract::The 2D arrangement of rows of enamel rods with alternating (decussating) tilt angles across the thickness of the inner layer in rat and mouse incisor enamel is well known and assumed to occur in a uniform and repetitive pattern. Some irregularities in the arrangement of rows have been reported, but no detailed investi...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:10.1111/joa.13053

    authors: Smith CE,Hu Y,Hu JC,Simmer JP

    更新日期:2019-11-01 00:00:00

  • A collagen and elastic network in the wing of the bat.

    abstract::Bundles of collagen fibrils, elastic fibres and fibroblasts are organized into a network that lies in the plane of a large portion of the bat wing. By ultrastructural (TEM and SEM) and biochemical analyses it was found that individual bundles of the net are similar to elastic ligaments. Although elastic fibres predomi...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:

    authors: Holbrook KA,Odland GF

    更新日期:1978-05-01 00:00:00

  • MRI-determined lumbar muscle morphometry in man and sheep: potential biomechanical implications for ovine model to human spine translation.

    abstract::The sheep is a commonly used animal model for human lumbar spine surgery, but only in vitro investigations comparing the human and ovine spine exist. Spinal musculature has previously not been compared between man and sheep. This additional knowledge could further indicate to what extent these species are biomechanica...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:10.1111/joa.12354

    authors: Valentin S,Licka TF,Elliott J

    更新日期:2015-10-01 00:00:00

  • The hooked element in the pes of turtles (Testudines): a global approach to exploring primary and secondary homology.

    abstract::The hooked element in the pes of turtles was historically identified by most palaeontologists and embryologists as a modified fifth metatarsal, and often used as evidence to unite turtles with other reptiles with a hooked element. Some recent embryological studies, however, revealed that this element might represent a...

    journal_title:Journal of anatomy

    pub_type: 杂志文章,评审

    doi:10.1111/joa.12103

    authors: Joyce WG,Werneburg I,Lyson TR

    更新日期:2013-11-01 00:00:00

  • Muscle moment arms of pelvic limb muscles of the ostrich (Struthio camelus).

    abstract::Muscle moment arms were measured for major muscles of the pelvic limb of the ostrich (Struthio camelus) in order to assess specific functional behaviour and to apply this to locomotor performance. Pelvic limbs of six juvenile ostriches were used for this study. The tendon travel technique was used to measure moment ar...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:10.1111/j.1469-7580.2007.00762.x

    authors: Smith NC,Payne RC,Jespers KJ,Wilson AM

    更新日期:2007-09-01 00:00:00

  • Comparative anatomy, homologies and evolution of the pectoral and forelimb musculature of tetrapods with special attention to extant limbed amphibians and reptiles.

    abstract::The main aim of the present work is to synthesize the information obtained from our dissections of the pectoral and forelimb muscles of representative members of the major extant taxa of limbed amphibians and reptiles and from our review of the literature, in order to provide an account of the comparative anatomy, hom...

    journal_title:Journal of anatomy

    pub_type: 杂志文章,评审

    doi:10.1111/j.1469-7580.2010.01278.x

    authors: Abdala V,Diogo R

    更新日期:2010-11-01 00:00:00

  • Evaluation of pulmonary volumetric morphometry at the light and electron microscopy level in several species of passerine birds.

    abstract::The lungs of 3 small passerine species, having similar body mass but different diurnal activity patterns, were analysed morphometrically to assess the relationship between diurnal activity and pulmonary volumetry at the light and electron microscope levels. The percentage volumes of the major lung and exchange tissue ...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:10.1046/j.1469-7580.1998.19340573.x

    authors: Vitali SD,Richardson KC

    更新日期:1998-11-01 00:00:00

  • Phagocytic capacity of leucocytes in sheep mammary secretions following weaning.

    abstract::Lactating animals are particularly susceptible to mastitis during the early stages of mammary gland involution following weaning. In this study we compared the phagocytic capacity of cells collected from sheep mammary secretions at different stages of involution. The ability of neutrophils and macrophages to ingest la...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:10.1046/j.0021-8782.2002.00104.x

    authors: Tatarczuch L,Bischof RJ,Philip CJ,Lee CS

    更新日期:2002-11-01 00:00:00

  • On the role of the notochord in somite formation and the possible evolutionary significance of the concomitant cell re-orientation.

    abstract::Homoplastic grafts of re-orientated unsegmented paraxial mesoderm transplanted from stage 20 Xenopus embryos into host embryos of the same age resulted in segmentation and the formation of somites in the same axis as if they had been left in situ. Because grafts transplanted with various orientations came under the st...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:

    authors: Burgess AM

    更新日期:1983-06-01 00:00:00

  • The permeability of the epithelium of the skin of fetal rats demonstrated with a lanthanum-containing solution.

    abstract::The permeability of the skin of fetal rats between 14 and 21 days of intrauterine life was investigated by injecting lanthanum nitrate solution subepidermally and by exposing the external surface of other fetuses to the same solution. Up to the age of 18 days, the epidermis was freely permeable from the basal surface ...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:

    authors: Hayward AF

    更新日期:1983-03-01 00:00:00

  • Rearrangement of extracellular matrix during cluster formation by human luteinising granulosa cells in culture.

    abstract::Human ovarian granulosa cells were cultured on a basement membrane preparation (Matrigel) to investigate the role of extracellular matrix components in granulosa cell cluster formation. Time-lapse videomicroscopy of these cultures revealed a rapid aggregation of cells which was initiated during the first 2-4 h of cult...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:10.1046/j.1469-7580.2000.19620243.x

    authors: Richardson MC,Slack C,Stewart IJ

    更新日期:2000-02-01 00:00:00

  • The role of microtubules and microtubule-organising centres during the migration of mitochondria.

    abstract::The translocation of mitochondria towards the primitive inner segment of the cones in the tree shrew Tupaia belangeri was investigated by transmission electron microscopy. Throughout ontogeny the migrating mitochondria were codistributed with cytoplasmic microtubules which were preserved after the application of conve...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:

    authors: Knabe W,Kuhn HJ

    更新日期:1996-10-01 00:00:00

  • Ultrastructure of the mouse spinal cord ependyma.

    abstract::This study was done in order to investigate the normal ultrastructure of well-preserved mouse spinal canal ependyma using light, scanning and transmission electron microscopy. The ependymal lining was found to consist of a simple, cuboidal epithelium essentially similar to the unspecialized cuboidal ependyma of the br...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:

    authors: Bjugn R,Haugland HK,Flood PR

    更新日期:1988-10-01 00:00:00

  • Changes in dermal matrix in the absence of Rac1 in keratinocytes.

    abstract::Keratinocytes, in response to irritants, secrete pro-inflammatory mediators which recruit and activate immune and mesenchymal cells, including fibroblasts, to repair the skin. Fibroblasts respond by synthesising collagen and promoting the crosslinking extracellular matrix (ECM). We recently showed that the deletion of...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:10.1111/joa.12442

    authors: Stanley A,Pedersen E,Brakebusch C,Quondamatteo F

    更新日期:2016-05-01 00:00:00

  • Comparative studies on the distribution of binucleate cells in the placentae of the deer and cow using the monoclonal antibody, SBU-3.

    abstract::A monoclonal antibody SBU-3 raised against an antigen expressed by the binucleate cells in the trophoblast of the sheep placentome crossreacts with an antigen expressed by binucleate cells in the placenta of the deer and the cow. This monoclonal antibody has been used to study the distribution of this subpopulation of...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:

    authors: Lee CS,Gogolin-Ewens K,Brandon MR

    更新日期:1986-08-01 00:00:00

  • Comparative functional anatomy of the epaxial musculature of dogs (Canis familiaris) bred for sprinting vs. fighting.

    abstract::The axial musculoskeletal system of quadrupedal mammals is not currently well understood despite its functional importance in terms of facilitating postural stability and locomotion. Here we examined the detailed architecture of the muscles of the vertebral column of two breeds of dog, the Staffordshire bull terrier (...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:10.1111/joa.12208

    authors: Webster EL,Hudson PE,Channon SB

    更新日期:2014-09-01 00:00:00

  • Compliance in the neck structures of the guinea pig spermatozoon, as indicated by rapid freezing and electron microscopy.

    abstract::Electron microscopy has been used to investigate whether the transversely striated columns of the connecting piece in the neck region of guinea pig spermatozoa, undergo lengthening and shortening as a result of the forces generated during motility. Motile spermatozoa were subjected to near-instantaneous rapid freezing...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:10.1111/j.1469-7580.2008.00919.x

    authors: Woolley DM,Carter DA,Tilly GN

    更新日期:2008-09-01 00:00:00

  • Reconstruction of body cavity volume in terrestrial tetrapods.

    abstract::Although it is generally assumed that herbivores have more voluminous body cavities due to larger digestive tracts required for the digestion of plant fiber, this concept has not been addressed quantitatively. We estimated the volume of the torso in 126 terrestrial tetrapods (synapsids including basal synapsids and ma...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:10.1111/joa.12557

    authors: Clauss M,Nurutdinova I,Meloro C,Gunga HC,Jiang D,Koller J,Herkner B,Sander PM,Hellwich O

    更新日期:2017-02-01 00:00:00

  • Collateral arterial blood supply to the pregnant uterus in the sheep.

    abstract::The common internal iliac artery in the sheep gives rise to the arteries which are the primary source of blood to the uterus. We have used a vascular occluder placed on the common internal iliac artery of the pregnant sheep to induce and study the effects of chronic fetal hypoxaemia. We have noted that uterine blood f...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:

    authors: Mounts KO,Worrell MB,Boyle DW

    更新日期:1995-08-01 00:00:00

  • Development and evolution of tooth renewal in neoselachian sharks as a model for transformation in chondrichthyan dentitions.

    abstract::A defining feature of dentitions in modern sharks and rays is the regulated pattern order that generates multiple replacement teeth. These are arranged in labio-lingual files of replacement teeth that form in sequential time order both along the jaw and within successively initiated teeth in a deep dental lamina. Two ...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:10.1111/joa.12796

    authors: Meredith Smith M,Underwood C,Clark B,Kriwet J,Johanson Z

    更新日期:2018-06-01 00:00:00

  • Distribution of 125iodine-labelled mouse immunoglobulin G injected intravenously in pregnant mice.

    abstract::Mouse immunoglobulin G (IgG) was iodinated with 125iodine (I) and injected intravenously into pregnant mice in order to examine whether mouse granulated metrial gland (GMG) cells are able to take up IgG in vivo. The mice were injected intravenously on days 8, 12 or 16 of pregnancy and killed either 5 min, 2 h or 24 h ...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:

    authors: Peel S,Stewart IJ

    更新日期:1992-06-01 00:00:00

  • The surface area and volume of the human fetus.

    abstract::The surface area and volume of 79 human fetuses (body weight 8-4080 g) were estimated by use of a geometric method. It was found that body surface area increased by a factor of about 70, and body volume by a factor of about 400, during the fetal period. Surface area (S, in cm2) was related to body weight (W, in g) and...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:

    authors: Meban C

    更新日期:1983-09-01 00:00:00

  • Fetal and postnatal development of the patella, patellar tendon and suprapatella in the rabbit; changes in the distribution of the fibrillar collagens.

    abstract::The development of the patella, its associated tendons, and suprapatella of the rabbit knee joint is described from the 17 d fetus to the mature adult. The patellar tendon (ligament) with the patella on its posterior surface is seen in the 17 d fetus and is fully developed by 1 postnatal wk. It is composed of bundles ...

    journal_title:Journal of anatomy

    pub_type: 杂志文章

    doi:10.1046/j.1469-7580.1997.19030327.x

    authors: Bland YS,Ashhurst DE

    更新日期:1997-04-01 00:00:00