Paulina Jiménez-Huidobro, Michael W. Caldwell,
... a reassignment of the taxon to the genus Tylosaurus Marsh, 1872 Marsh, O. C. 1872. Note on ... the genus Hainosaurus cannot be diagnosed independent of Tylosaurus. The diagnosis of Hainosaurus bernardi by Dollo, 1885a ... the taxon are compared with recognized species of Tylosaurus. Hainosaurus was originally diagnosed from characters of the ... of these elements are shared with the genus Tylosaurus, and that those that are not shared, but ... conclusion that Hainosaurus is a junior synonym of Tylosaurus because no anatomical features distinguish the former from ...
Tópico(s): Amphibian and Reptile Biology
2016 - Taylor & Francis | Journal of Vertebrate Paleontology
Paulina Jiménez-Huidobro, Tiago R. Simões, Michael W. Caldwell,
Tylosaurus nepaeolicus (Cope, 1874), from the lower Smokey Hill Chalk upper Coniacian of Kansas is reassessed and ... upper Smoky Hill Chalk, T. proriger (Cope, 1869). Tylosaurus nepaeolicus (Cope, 1874) is virtually indistinguishable from T. ... suggest that T. kansasensis is a juvenile of Tylosaurus nepaeolicus, and is thus the junior synonym of ...
Tópico(s): Ichthyology and Marine Biology
2016 - Elsevier BV | Cretaceous Research
Abstract Two genera of tylosaurine mosasaurs, Tylosaurus and Hainosaurus , are recorded for the first time from Germany. Tylosaurus sp. is represented by two isolated tooth crowns, originally described as ... genus Hainosaurus is considered to be distinct from Tylosaurus because of its significant modification of the dental ... trend from a generalised-piercing marginal dentition in Tylosaurus towards the increasingly labiolingually compressed, symmetrical, strongly bicarinate ... since the Early Campanian, and the occurrence of Tylosaurus spp. in the same area until the Late ...
Tópico(s): Ichthyology and Marine Biology
2014 - Cambridge University Press | Netherlands Journal of Geosciences – Geologie en Mijnbouw
Timon S. Bullard, Michael W. Caldwell,
ABSTRACT Tylosaurus pembinensis (Mosasauridae; Tylosaurini), from the middle Campanian Pembina Member of the Pierre Shale, exposed near Morden, Manitoba, ... note that the fully prepared quadrate possesses key Tylosaurus features such as a moderately large-sized suprastapedial ... high pygal count consistent with Hainosaurus. In recharacterizing Tylosaurus pembinensis, we discuss a number of problematic characters ... to diagnose Hainosaurus, in the context of diagnosing Tylosaurus and not for the purpose of revising the ...
Tópico(s): Evolution and Paleontology Studies
2010 - Taylor & Francis | Journal of Vertebrate Paleontology
... corresponding elements in H. bernardi Dollo, 1885 and Tylosaurus proriger (Cope, 1869a), strongly indicate that 'H.' pembinensis and 'H.' gaudryi are both Tylosaurus Marsh, 1872. Diagnostic features of Hainosaurus include a ... infrastapedial process on the quadrate (conspicuous protuberance in Tylosaurus), flattened, symmetrically bicarinate marginal teeth (asymmetric and conical in Tylosaurus), short and wide pygal centra, and anteriorly situated ... processes (markedly triangular centra and thick processes in Tylosaurus).
Tópico(s): Optical measurement and interference techniques
2005 - Cambridge University Press | Journal of Paleontology
... been proposed for any mosasaur taxon. Two taxa— Tylosaurus proriger and T. kansasensis/nepaeolicus —have robust fossil ... and are thus ideal for studying mosasaur ontogeny. Tylosaurus is a genus of particularly large mosasaurs with ... the Late Cretaceous. An analysis of growth in Tylosaurus provides an opportunity to test hypotheses of the ... novel hypothesis of anagenesis in Western Interior Seaway Tylosaurus species, driven by peramorphy, is proposed here.
Tópico(s): Amphibian and Reptile Biology
2020 - PeerJ, Inc. | PeerJ
Paulina Jiménez-Huidobro, Michael W. Caldwell,
... the tylosaurine subfamily are divided into two genera: Tylosaurus Marsh, 1872, and Taniwhasaurus Hector, 1874. When all ... The lack of a clear diagnosis of Hainosaurus/Tylosaurus neumilleri leaves this taxon as nomen dubium; the ... saskatchewanensis; therefore the specimen cannot be identified beyond Tylosaurus sp. Reassessment of the known materials of the ... Circle Basin distribution for species of the genus Tylosaurus from the Coniacian to the Maatrichtian is supported, ...
Tópico(s): Evolution and Paleontology Studies
2019 - Frontiers Media | Frontiers in Earth Science
Paulina Jiménez-Huidobro, Michael W. Caldwell, Ilaria Paparella, Timon S. Bullard,
Mosasaurs assigned to the genus Tylosaurus have been reported from the North Atlantic Circle Basin, including the Western Interior Seaway in North America and Europe, from the ... early Maastrichtian of Belgium. The youngest record of Tylosaurus in North America is from the middle Campanian ... recognition of this specimen as a new species, Tylosaurus saskatchewanensis sp. nov. The specimen, collected from the ... and extends the stratigraphical distribution of the genus Tylosaurus in North America, occupying the northern Western Interior ...
Tópico(s): Evolution and Paleontology Studies
2018 - Taylor & Francis | Journal of Systematic Palaeontology
Takuya Konishi, Paulina Jiménez-Huidobro, Michael W. Caldwell,
... here report on the smallest-known, neonate-sized Tylosaurus specimen, FHSM VP-14845, recovered from the lower ... diagnoses FHSM VP-14845 as a species of Tylosaurus, including the elongate basisphenoid morphology. At the same ... postnatal ontogeny. Our recognition of a neonate-sized Tylosaurus specimen without an elongate predental rostrum of the ...
Tópico(s): Marine animal studies overview
2018 - Taylor & Francis | Journal of Vertebrate Paleontology
Momo Yamashita, Takuya Konishi, Tamaki Sato,
... and compare sclerotic rings of four mosasaur genera, Tylosaurus, Platecarpus, Clidastes, and Mosasaurus, for the first time. Two specimens of Tylosaurus and Platecarpus share an exact scleral ossicle arrangement, ... of 14 ossicles per ring are shared between Tylosaurus and numerous living terrestrial lizard taxa, pertaining to ...
Tópico(s): Ichthyology and Marine Biology
2015 - Public Library of Science | PLoS ONE
Johan A. Gren, Johan Lindgren,
... in three mosasaur taxa ( Dollosaurus , cf. Platecarpus and Tylosaurus ) and one genus of marine crocodylian ( Aigialosuchus ), all ... crowns took 342 (cf. Platecarpus ), 426 ( Dollosaurus ), 487 ( Tylosaurus ) and 259 ( Aigialosuchus ) days, respectively. The coarser bands ... development times in large-toothed taxa, such as Tylosaurus , presumably increased the risk of long-term incapacity ...
Tópico(s): Amphibian and Reptile Biology
2013 - Cambridge University Press | Geological Magazine
Abstract Tylosaurus kansasensis sp. nov. is described herein on the basis of thirteen specimens collected from the Smoky Hill ... western Kansas, USA. The new species, originally designated Tylosaurus n. sp., co-occurred with T. nepaeolicus and ...
Tópico(s): Ichthyology and Marine Biology
2005 - Cambridge University Press | Netherlands Journal of Geosciences – Geologie en Mijnbouw
Tylosaurus nepaeolicus (Cope 1874) is one of the least well known of the five species of mosasaurs ... additional T. nepaeolicus skulls, an articulated series of Tylosaurus sp. vertebrae and other material in the Sternberg ...
Tópico(s): Amphibian and Reptile Biology
2002 - Kansas Academy of Science | Transactions of the Kansas Academy of Science
Johan Lindgren, Mikael Siverson,
... is redescribed and assigned to the tylosaurine genus Tylosaurus on the basis of its dental and vertebral ... of Belgium, indicates that all three may be Tylosaurus . The utility of isolated tooth-crowns in mosasaur ...
Tópico(s): Evolution and Paleontology Studies
2002 - Cambridge University Press | Transactions of the Royal Society of Edinburgh Earth Sciences
Robert F. Stewart, Jordan C. Mallon,
... skulls of two subadult individuals of the mosasaurid Tylosaurus proriger from the upper Smoky Hills Chalk Member ...
Tópico(s): Amphibian and Reptile Biology
2018 - Language and Literacy Researchers of Canada | Vertebrate Anatomy Morphology Palaeontology
Jahn J. Hornung, Mike Reich, Udo Frerichs,
... upper Campanian) shows a different taxonomic composition with Tylosaurus sp. (Tylosaurinae), a second indeterminate species of Prognathodon ... lutugini (Yakovlev) from eastern Europe. The records of Tylosaurus and ?Platecarpus are among the stratigraphically youngest of ...
Tópico(s): Evolution and Paleontology Studies
2018 - Taylor & Francis | Alcheringa An Australasian Journal of Palaeontology
... features from the parafamily Russellosaurinae, especially the genus Tylosaurus.Some features as the "V" shaped skull, well ... of mandible and quadrate bone are characteristics of Tylosaurus, and are similar to T. proriger and T. ...
Tópico(s): Ichthyology and Marine Biology
2013 - Sociedad Geológica Mexicana | Boletín de la Sociedad Geológica Mexicana
... longer than equivalent caudal series in Platecarpus and Tylosaurus. This suggests that the tails of early russellosaurines ... of the vertebrae in relation to Platecarpus and Tylosaurus indicates a relatively large animal roughly 3.2 ...
Tópico(s): Ichthyology and Marine Biology
2011 - Kansas Academy of Science | Transactions of the Kansas Academy of Science
... and lower jaws of the holotype specimen of Tylosaurus kansasensis (FHSM VP-2295) in the collection of ...
Tópico(s): Turtle Biology and Conservation
2008 - Kansas Academy of Science | Transactions of the Kansas Academy of Science
... of the remains. The specimen is identified as Tylosaurus sp. on the basis of the characteristic shape ...
Tópico(s): Evolution and Paleontology Studies
2005 - Kansas Academy of Science | Transactions of the Kansas Academy of Science
... biozones are recognized based on this survey: the Tylosaurus Acme-zone (from the base of the Tombigbee ... Chalk, has been abandoned. The transition from the Tylosaurus biozone to the Clidastes biozone has been interpreted ...
Tópico(s): Amphibian and Reptile Biology
2002 - Taylor & Francis | Journal of Vertebrate Paleontology
Patrick D. Lyons, Marc Rioux, R. Timothy Patterson,
... of a fossilized basisphenoid-basioccipital from a juvenile Tylosaurus sp. mosasaur was generated using a 3D laser ...
Tópico(s): Optical measurement and interference techniques
2000 - | Palaeontologia Electronica
T. Lynn Harrell, Alberto Pérez‐Huerta, Celina A. Suarez,
... C), Platecarpus (T b = 36.3°C), and Tylosaurus (T b = 34.3°C), had elevated average ...
Tópico(s): Ichthyology and Marine Biology
2016 - Wiley | Palaeontology
Gorden L. Bell, Kenneth R. Barnes, Michael J. Polcyn,
... to late Coniacian include the first report of Tylosaurus kansasensis outside of Kansas, T. nepaeolicus , Platecarpus planifrons , ...
Tópico(s): Ichthyology and Marine Biology
2012 - Cambridge University Press | Earth and Environmental Science Transactions of the Royal Society of Edinburgh
Nathalie Bardet, Xabier Pereda Suberbiola, José Carmelo Corral, Juan Ignacio Baceta, José Ángel Torres, Benjamín Botantz, Gorka Martin,
... Mosasaurus lemonnieri, Prognathodon solvayi, Platecarpus cf. ictericus and Tylosaurus sp. A new specimen, which consists of a ...
Tópico(s): Ichthyology and Marine Biology
2012 - EDP Sciences | BSGF – Earth Sciences Bulletin
Alexandra Houssaye, Nathalie Bardet,
... like state was indeed described in Clidastes and Tylosaurus, bone mass increase was reported in Platecarpus. As ...
Tópico(s): Evolution and Paleontology Studies
2011 - Wiley | Lethaia
... For the first time, diaphysial thin sections of Tylosaurus, Platecarpus and Clidastes limb bones are studied using ...
Tópico(s): Evolution and Paleontology Studies
2007 - Kansas Academy of Science | Transactions of the Kansas Academy of Science
Nathalie Bardet, Xabier Pereda Suberbiola, José Carmelo Corral,
... reattributed to a tylosaurine.It may belong to Tylosaurus, a nearly cosmopolitan genus known from the Santonian- ...
Tópico(s): Ichthyology and Marine Biology
2006 - Spanish National Research Council | Estudios Geológicos
Bruce M. Rothschild, L. Martin,
... invariably present in Platecarpus coryphaeus and P. ictericus, Tylosaurus proriger, Mosasaurus lemonnieri and M. conodon, Plioplatecarpus houzeaui ...
Tópico(s): Turtle Biology and Conservation
2005 - Cambridge University Press | Netherlands Journal of Geosciences – Geologie en Mijnbouw
Tópico(s): Ichthyology and Marine Biology
2002 - Cambridge University Press | Transactions of the Royal Society of Edinburgh Earth Sciences