Abstract：
:Ceratopsidae represents a group of quadrupedal herbivorous dinosaurs that inhabited western North America and eastern Asia during the Late Cretaceous. Although horns and frills of the cranium are highly variable across species, the lower jaw historically has been considered to be relatively conservative in morphology. Here, the lower jaws from 58 specimens representing 21 ceratopsoid taxa were sampled, using geometric morphometrics and 2D finite element analysis (FEA) to explore differences in morphology and mechanical performance across Ceratopsoidea (the clade including Ceratopsidae, Turanoceratops and Zuniceratops). Principal component analyses and non-parametric permuted manovas highlight Triceratopsini as a morphologically distinct clade within the sample. A relatively robust and elongate dentary, a larger and more elongated coronoid process, and a small and dorso-ventrally compressed angular characterize this clade, as well as the absolutely larger size. By contrast, non-triceratopsin chasmosaurines, Centrosaurini and Pachyrhinosaurini have similar morphologies to each other. Zuniceratops and Avaceratops are distinct from other taxa. No differences in size between Pachyrhinosaurini and Centrosaurini are recovered using non-parametric permuted anovas. Structural performance, as evaluated using a 2D FEA, is similar across all groups as measured by overall stress, with the exception of Triceratopsini. Shape, size and stress are phylogenetically constrained. A longer dentary as well as a long coronoid process result in a lower jaw that is reconstructed as relatively much more stressed in triceratopsins.
journal_name
J Anatjournal_title
Journal of anatomyauthors
Maiorino L,Farke AA,Kotsakis T,Teresi L,Piras Pdoi
10.1111/joa.12374subject
Has Abstractpub_date
2015-11-01 00:00:00pages
631-46issue
5eissn
0021-8782issn
1469-7580journal_volume
227pub_type
杂志文章abstract：:In a study of 80 cavernous sinuses in 40 cadavers, the trochlear nerve entered the cavernous sinus in 87.5% of cases before the crossing, in 7.5% at the crossing and in 5.0% after the crossing of the free and the attached margins of the tentorium cerebelli. In 77.5% of specimens the trochlear nerve showed a marked ben...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1988-08-01 00:00:00
abstract：:To evaluate whether the lines occasionally detected on clinical magnetic resonance (MR) images are genuine hippocampal layers, a formalin fixed hippocampal specimen was scanned using T2 weighted sequences at 7 Tesla (voxel dimensions 0.064 x 0.064 x 1 mm) and at 1.5 Tesla (voxel dimensions: 0.156 x 0.156 x 1 mm) and c...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1046/j.1469-7580.1999.19510131.x
更新日期：1999-07-01 00:00:00
abstract：:Although several studies have been published regarding the morphology and anatomical variations of the human shoulder joint, most have dealt with adult individuals. Those looking into the development of the joint have been focused on specific structures or have observed specimens in advanced gestational stages. The go...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12753
更新日期：2018-03-01 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章,评审
doi：10.1046/j.1469-7580.2000.19710019.x
更新日期：2000-07-01 00:00:00
abstract：:For an accurate assessment of jaw movement, it is crucial to understand the comprehensive formation of the masticatory muscles with special reference to the relationship to the disc of the temporomandibular joint. Detailed dissection was performed on 26 head halves of 14 Japanese cadavers in order to obtain precise an...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1046/j.1469-7580.2000.19720291.x
更新日期：2000-08-01 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
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journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12366
更新日期：2015-10-01 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1985-08-01 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/j.1469-7580.2008.00880.x
更新日期：2008-05-01 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/j.1469-7580.2007.00761.x
更新日期：2007-09-01 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1985-05-01 00:00:00
abstract：:Mammalian pregnancy involves remodelling of the uterine epithelium to enable placentation. In marsupials, such remodelling has probably played a key role in the transition from ancestral invasive placentation to non-invasive placentation. Identifying uterine alterations that are unique to marsupials with non-invasive ...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.13162
更新日期：2020-06-01 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12466
更新日期：2016-08-01 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.13342
更新日期：2020-10-22 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1995-12-01 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1992-06-01 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/j.1469-7580.2007.00719.x
更新日期：2007-05-01 00:00:00
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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
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journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1993-10-01 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1985-12-01 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章
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journal_title：Journal of anatomy
pub_type： 杂志文章
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journal_title：Journal of anatomy
pub_type： 临床试验,杂志文章
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更新日期：2018-10-01 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1989-12-01 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12766
更新日期：2018-03-01 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章
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更新日期：2005-10-01 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章
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更新日期：2015-03-01 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1986-02-01 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章
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更新日期：2011-12-01 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1990-02-01 00:00:00
