Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Moya Meredith Smith"'
Publikováno v:
Zoological Letters, Vol 5, Iss 1, Pp 1-30 (2019)
Abstract The dentition in extant holocephalans (Chondrichthyes) comprises three pairs of continuously growing dental plates, rather than the separate teeth characterizing elasmobranchs. We investigated how different types of dentine in these plates,
Externí odkaz:
https://doaj.org/article/53033e8be0484a6ebc8f13c7f5261126
Publikováno v:
Royal Society Open Science, Vol 3, Iss 11 (2016)
The squaliform sharks represent one of the most speciose shark clades. Many adult squaliforms have blade-like teeth, either on both jaws or restricted to the lower jaw, forming a continuous, serrated blade along the jaw margin. These teeth are replac
Externí odkaz:
https://doaj.org/article/a4cdec5eaf5e47f7a1f1944e655acf5b
Publikováno v:
Royal Society Open Science, Vol 2, Iss 9 (2015)
A well-known characteristic of chondrichthyans (e.g. sharks, rays) is their covering of external skin denticles (placoid scales), but less well understood is the wide morphological diversity that these skin denticles can show. Some of the more unusua
Externí odkaz:
https://doaj.org/article/ec93623480f94beda5a64bb6d21db328
Autor:
Charlie J Underwood, Zerina Johanson, Monique Welten, Brian Metscher, Liam J Rasch, Gareth J Fraser, Moya Meredith Smith
Publikováno v:
PLoS ONE, Vol 10, Iss 4, p e0122553 (2015)
Shark and ray (elasmobranch) dentitions are well known for their multiple generations of teeth, with isolated teeth being common in the fossil record. However, how the diverse dentitions characteristic of elasmobranchs form is still poorly understood
Externí odkaz:
https://doaj.org/article/b8d24aed07794db9bb33f69e89434327
Autor:
Sergio F. Cabreira, Cesar L. Schultz, Lúcio R. da Silva, Luiz Henrique Puricelli Lora, Cristiane Pakulski, Rodrigo C. B. do Rêgo, Marina B. Soares, Moya Meredith Smith, Martha Richter
Publikováno v:
Journal of Anatomy. 241:1424-1440
Two sets of teeth (diphyodonty) characterise extant mammals but not reptiles, as they generate many replacement sets (polyphyodonty). The transition in long-extinct species from many sets to only two has to date only been reported in Jurassic eucynod
Publikováno v:
Journal of Anatomy. 241:393-406
Leedsichthys problematicus is a suspension-feeding member of the Mesozoic clade Pachycormiformes (stem-group Teleostei), and the largest known ray-finned fish (Actinopterygii). As in some larger fish, the skeleton is poorly ossified, but the caudal f
In this field there has been an explosion of information generated by scientific research. One of the beneficiaries of this has been the study of morphology, where new techniques and analyses have led to insights into a wide range of topics. Advances
Autor:
Vincent Fernandez, Brett Clark, Esther Manzanares, Moya Meredith Smith, Charlie J. Underwood, Zerina Johanson
Publikováno v:
Integrative and Comparative Biology. 60:630-643
The Holocephali is a major group of chondrichthyan fishes, the sister taxon to the sharks and rays (Elasmobranchii). However, the dentition of extant holocephalans is very different from that of the elasmobranchs, lacking individual tooth renewal, bu
Publikováno v:
Palaeontology. 60:829-836
Placoderms (Devonian fossil fishes) are resolved phylogenetically to the base of jawed vertebrates and provide important evidence for evolutionary origins of teeth, particularly with respect to the Arthrodira. The arthrodires represent a derived grou
Publikováno v:
infocus Magazine. :4-11
This is an update on our article “Jawed vertebrate dentitions – when did teeth evolve” which appeared as a review for infocus 42, June 2016 but since then two important papers have just been published on the topic we choose to headline here.