Abstract：
:Most of Mesozoic bird diversity comprises species that are part of one of two major lineages, namely Ornithurae, including living birds, and Enantiornithes, a major radiation traditionally referred to as 'opposite birds'. Here we report the largest Early Cretaceous enantiornithine bird from north-east China, which provides evidence that basal members of Enantiornithes share more morphologies with ornithurine birds than previously recognized. Morphological evolution in these two groups has been thought to be largely parallel, with derived members of Enantiornithes convergent on the 'advanced' flight capabilities of ornithurine birds. The presence of an array of morphologies previously thought to be derived within ornithurine and enantiornithine birds in a basal enantiornithine species provides evidence of the complex character evolution in these two major lineages. The cranial morphology of the new specimen is among the best preserved for Mesozoic avians. The new species extends the size range known for Early Cretaceous Enantiornithes significantly and provides evidence of forelimb to hind limb proportions distinct from all other known members of the clade. As such, it sheds new light on avian body size evolution and diversity, and allows a re-evaluation of a previously proposed hypothesis of competitive exclusion among Early Cretaceous avian clades.
journal_name
J Anatjournal_title
Journal of anatomyauthors
Zhou Z,Clarke J,Zhang Fdoi
10.1111/j.1469-7580.2008.00880.xsubject
Has Abstractpub_date
2008-05-01 00:00:00pages
565-77issue
5eissn
0021-8782issn
1469-7580pii
JOA880journal_volume
212pub_type
杂志文章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
更新日期：2019-11-01 00:00:00
abstract：:Salivary mucins MG1 and MG2 have been found in the oral cavity where they perform several functions such as the formation of the mucous layer covering the oral mucosa and teeth. Recent studies have demonstrated their presence in other organs and tissues. The aim of this study was to determine their expression in human...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/j.1469-7580.2008.01018.x
更新日期：2009-01-01 00:00:00
abstract：:Two arteries connect the anterior branch of the middle meningeal artery to the lacrimal artery. One vessel, the sphenoidal artery, passes through the superior orbital fissure. The other vessel, the meningolacrimal artery, passes through the cranio-orbital foramen. An analysis of data derived from embryology, comparati...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1991-10-01 00:00:00
abstract：:Motor control circuitry of the central nervous system must be flexible so that motor behaviours can be adapted to suit the varying demands of different states, developmental stages, and environments. Flexibility in motor control is largely provided by neuromodulatory systems which can adjust the output of motor circui...
journal_title：Journal of anatomy
pub_type： 杂志文章,评审
doi：10.1111/joa.12063
更新日期：2014-01-01 00:00:00
abstract：:We report a magnetic resonance imaging study which developed a consistent hierarchy of imaging planes for examination of the origins, courses and principal branches of the main coronary arteries of prepared human cadaveric hearts. The reference longitudinal axis was chosen between the aortic valve and the apex of the ...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1994-10-01 00:00:00
abstract：:Lateral nasal glands of 12-15 weeks old pups are immature. Gland acini of pups and mature dogs contain numerous electron-lucent vacuoles with basophilic, electron-dense cores. The vacuoles contain both acid and neutral glycoproteins, sialated glycoproteins being the dominant acidic moiety. Lateral and basal cytoplasmi...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1981-01-01 00:00:00
abstract：:The purpose of this study was to examine and describe the sequence of events involved in long-term biological reconstruction of a tendon-bone interface following surgical reattachment. Patellar tendon re-attachment in the adult sheep was used to investigate and describe the biological components involved in healing an...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/j.1469-7580.2007.00699.x
更新日期：2007-03-01 00:00:00
abstract：:Stem cells hold great promise for regenerative medicine but remain elusive in many tissues, including the small intestine, where it is well accepted that the epithelium is maintained by intestinal stem cells located in the crypts. The lack of established markers to prospectively identify intestinal stem cells has nece...
journal_title：Journal of anatomy
pub_type： 杂志文章,评审
doi：10.1111/j.1469-7580.2008.00925.x
更新日期：2008-07-01 00:00:00
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：
更新日期：1995-08-01 00:00:00
abstract：:The European eel (Anguilla anguilla) has been extensively studied, especially because of its highly specialized migratory behaviour associated with substantial phenotypic transformations. During this migration, one of those transformations the eel undergoes is from yellow to silver eel, a process known as silvering. A...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.13259
更新日期：2020-11-01 00:00:00
abstract：:The objective of the current study was to determine the tissue distribution of cells derived from the area opaca in heterospecific quail-chick blastodermal chimeras. Quail-chick chimeras were constructed by transferring dissociated cells from the area opaca of the stage X-XII (EG&K) quail embryo into the subgerminal c...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/j.1469-7580.2009.01168.x
更新日期：2010-01-01 00:00:00
abstract：:Germline stem cells, which can self-renew and generate gametes, are unique stem cells in that they are solely dedicated to transmit genetic information from generation to generation. The germ cells have a special place in the life cycle because they must be able to retain the ability to recreate the organism, a proper...
journal_title：Journal of anatomy
pub_type： 杂志文章,评审
doi：10.1111/j.1469-7580.2008.00930.x
更新日期：2008-07-01 00:00:00
abstract：:The structure of amniotic papillae in sheep was investigated by light transmission and scanning electron microscopy. Papillae were found on the amnion near the umbilical cord in a majority of the sheep examined, from early mid-term onwards. The papillae possessed a basic connective tissue core with a varying degree of...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1978-06-01 00:00:00
abstract：:Taurodontism (i.e. enlarged pulp chamber with concomitant apical displacement of the root bi/trifurcation) is considered a dental anomaly with relatively low incidence in contemporary societies, but it represents a typical trait frequently found in Neandertal teeth. Four hypotheses can be envisioned to explain the hig...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12260
更新日期：2015-02-01 00:00:00
abstract：:The morphology of the cartilage-marrow interface in chick embryo tibiae has been studied from Day 11 to Day 14. The cartilage-marrow interface did not present a uniform aspect and three different areas could be defined. Most of the interface was lined by fibroblast-like cells, macrophage-like cells and multinucleate g...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1988-10-01 00:00:00
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
更新日期：2008-09-01 00:00:00
abstract：:Femoral neck fractures are a major cause of morbidity and mortality in elderly humans. In addition to the age-related loss of cancellous bone, changes to the microstructure and morphology of the metaphyseal cortex may be a contributing factor in osteoporotic hip fractures. Recent investigations have identified a hyper...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1046/j.1469-7580.2001.19820153.x
更新日期：2001-02-01 00:00:00
abstract：:The mean fibre areas of samples from m. semitendinosus, m. diaphragma and m. pectoralis transversus of thoroughbred horses and greyhounds have been compared with those in similar samples from other members of their species. Athletes (greyhounds and thoroughbreds) have larger fibres in the semitendinosus and diaphragm ...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1978-10-01 00:00:00
abstract：:Lateral cephalographs from 220 normal adolescent white orthodontic patients, and of individuals with craniofacial dysostosis and oculodento-osseous dysplasia were studied. Variations were observed in the morphology of the posterior margins of the superior articular processes, vertebral artery canals being present in 8...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1979-05-01 00:00:00
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
更新日期：2015-09-01 00:00:00
abstract：:The primary cilium is a ubiquitous cytoplasmic organelle of unknown function. Ultrastructural evidence of primary cilia in chondrocytes, and their colocalisation with the Golgi apparatus, has led to speculation that these structures are functionally linked. To investigate the relationship between these organelles, we ...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1046/j.1469-7580.2001.19940393.x
更新日期：2001-10-01 00:00:00
abstract：:It is unknown whether loading of the lower limbs through additional storage of fat mass as evident in obesity would promote muscular adaptations similar to those seen with resistance exercise. It is also unclear whether ageing modulates any such adjustments. This study aimed to examine the relationships between adipos...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12248
更新日期：2014-12-01 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1978-05-01 00:00:00
abstract：:The development of Schmidt-Lanterman incisures was investigated in the rat sural nerve during an active phase of postnatal myelination (5-21 days post partum). Two distinct populations of incisures were recognised and the following nomenclature for their developmental stages is proposed. Primary incisures which appear...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1987-02-01 00:00:00
abstract：:Trabecular bone microstructural parameters, including trabecular thickness, spacing, and number, have been reported to scale with animal size with negative allometry, whereas bone volume fraction is animal size-invariant in terrestrial mammals. As for the majority of scaling patterns described in animals, its underlyi...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12278
更新日期：2015-03-01 00:00:00
abstract：:Cardiac arrhythmias, notably Wolff-Parkinson-White syndrome, are known to represent a major issue in patients with Ebstein's malformation of the tricuspid valve. Abnormal conducting circuits, however, can also be produced by pathways extending either from the atrioventricular node or the ventricular components of the ...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.13179
更新日期：2020-07-01 00:00:00
abstract：:Substantial changes in bone histology accompany the secondary adaptation to life in the water. This transition is well documented in several lineages of mammals and non-avian reptiles, but has received relatively little attention in birds. This study presents new observations on the long bone microstructure of penguin...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12367
更新日期：2015-11-01 00:00:00
abstract：:Peripheral sensory and autonomic neurons are known to possess insulin receptors. These have been considered to be of the peripheral type, i.e. similar to those of hepatic and fat cells rather than of the brain type which show dual specificity for both insulin and insulin-like growth factor (IGF-1). We have examined th...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1046/j.1469-7580.1997.19130431.x
更新日期：1997-10-01 00:00:00
abstract：:The blood supply to the cranial venae cavae on both sides and to the heart was studied macroscopically in 40 adult laboratory shrews (Suncus murinus) of both sexes injected either with Neoprene latex into the abdominal aorta (25 animals) or with Mercox into the left ventricle (15 animals). The 1st branch of the left s...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1993-12-01 00:00:00
abstract：:The calcaneocuboid joint was studied in ligamentous specimens of ten human feet, and in skeletons of two gorillas (Gorilla gorilla beringei), six chimpanzees (Pan troglodytes), three orangutans (Pongo pygmaeus) and 25 human feet. The movement of the transverse tarsal joint was further studied in a living foot on a wal...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1979-08-01 00:00:00
