A Small, Exquisitely Preserved Specimen of Mosasaurus missouriensis (Squamata, Mosasauridae) from the Upper Campanian of the Bearpaw Formation, Western Canada, and the First Stomach Contents for the Genus

@inproceedings{Konishi2014ASE,
  title={A Small, Exquisitely Preserved Specimen of Mosasaurus missouriensis (Squamata, Mosasauridae) from the Upper Campanian of the Bearpaw Formation, Western Canada, and the First Stomach Contents for the Genus},
  author={Takuya Konishi and Michael G. Newbrey and Michael Wayne Caldwell},
  year={2014}
}
ABSTRACT A new, exquisitely preserved specimen of a small mosasaur, referable to Mosasaurus missouriensis, is reported from the Bearpaw Formation (ca. 75 Ma, upper Campanian) of southern Alberta, Canada. Many calcified cartilaginous elements, including tracheal rings and the sternum, are preserved. The sternum most closely resembles that of Clidastes propython, bearing five shallow sternal rib facets on each side. Our comparative study of the new material with the holotype, referred material… Expand
Rediagnosis and redescription of Mosasaurus hoffmannii (Squamata: Mosasauridae) and an assessment of species assigned to the genus Mosasaurus
TLDR
It is shown that M. hoffmannii is distinguished from other species assignable to the genus by the anteroventral corner formed on the tympanic rim of the quadrate, the asymmetric carinae of the anterior marginal teeth dividing the tooth circumference into short labial and long lingual segments, and the proximal and distal expansion of the femur. Expand
A new species of longirostrine plioplatecarpine mosasaur (Squamata: Mosasauridae) from the Late Cretaceous of Morocco, with a re-evaluation of the problematic taxon ‘Platecarpus’ ptychodon
TLDR
A new mosasaur from Morocco described, Gavialimimus almaghribensis, is characterized by a highly elongate snout, highly retracted nares and large supratemporal fenestrae, among other features, and provides new insight into several aspects of mosasaurus evolution and comparative anatomy. Expand
Insights into the anatomy and functional morphology of durophagous mosasaurines (Squamata: Mosasauridae) from a new species of Globidens from Morocco
TLDR
A new species in the durophagous genus Globidens is described from the Maastrichtian phosphate deposits of Morocco, based on a partial disarticulated skull and cervical vertebral series that interpret the highly compact ribs, as well as several peculiarities of the temporal arcade and lower jaws, as adaptations to a diet of benthic, hard-bodied prey. Expand
A New Lizardfish (Teleostei, Aulopiformes) from the Late Cretaceous Bearpaw Formation of Alberta, Canada, with a Revised Diagnosis of Apateodus (Aulopiformes, Ichthyotringoidei)
TLDR
This report shows promise for additional fish material preserved in mosasaur skeletons because they are relatively more commonly preserved than fish skeletons, and emends the diagnosis for Apateodus to include more cranial characteristics. Expand
A new species of tylosaurine mosasaur from the upper Campanian Bearpaw Formation of Saskatchewan, Canada
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 Turonian of Chihuahua,Expand
Sclerotic Rings in Mosasaurs (Squamata: Mosasauridae): Structures and Taxonomic Diversity
TLDR
It is suggested that neither the ossicle count nor their arrangement played major roles in the aquatic adaptation in mosasaur eyes, and further quantitative study of extant reptilian clades containing both terrestrial and aquatic taxa is critical in order to understand possible adaptive significances of such osteological features. Expand
Reworked marine pythonomorph (Reptilia, Squamata) remains in Late Pleistocene cave deposits in central Spain
Three sites at the Calvero de la Higuera complex (Camino Cave, Navalmaillo Rock Shelter, and Buena Pinta Cave), near the village of Pinilla del Valle (Madrid, Spain), are known for their record ofExpand
Rediscovery of “Liodon” asiaticum Répelin, 1915, a Mosasaurini (Squamata, Mosasauridae, Mosasaurinae) from the Upper Cretaceous of the vicinity of Jerusalem – Biostratigraphical insights from microfossils
Briefl y mentioned in 1915 by the palaeontologist Répelin, the mosasaurid Liodon asiaticum Répelin, 1915 was found by a missionary to Africa, Father Ruffi er, in Late Cretaceous strata near JerusalemExpand
A Comprehensive Review of the Morphological Diversity of the Quadrate Bone in Mosasauroids (Squamata: Mosasauroidea), with Comments on the Homology of the Infrastapedial Process
TLDR
A comprehensive comparison of mosasauroid quadrates contextualized against a recent phylogeny of the group is provided, and it is demonstrated that some features of the posteroventral region of these bones are likely homoplastic and require the establishment of a new set of anatomical terms. Expand
A new halisaurine mosasaur (Squamata: Halisaurinae) from Japan: the first record in the western Pacific realm and the first documented insights into binocular vision in mosasaurs
A specimen of a halisaurine mosasaur is reported from Japan for the first time, closing the pre-existing biogeographical gap between the Middle East and the eastern Pacific. PhosphorosaurusExpand
...
1
2
3
...

References

SHOWING 1-10 OF 79 REFERENCES
New Exceptional Specimens of Prognathodon overtoni (Squamata, Mosasauridae) from the Upper Campanian of Alberta, Canada, and the Systematics and Ecology of the Genus
ABSTRACT Currently known from the early Campanian to late Maastrichtian, Prognathodon constitutes a group of mosasaurine mosasaurs that typically possessed massive jaws. Only four articulated skullsExpand
A New Mosasaurine from the Maastrichtian (Upper Cretaceous) Phosphates of Morocco and Its Implications for Mosasaurine Systematics
ABSTRACT A new mosasaur, Eremiasaurus heterodontus, gen. et sp. nov., from the Maastrichtian phosphates of Morocco is described based on the basis of two specimens: one consisting of a nearlyExpand
Anatomy and functional morphology of the largest marine reptile known, Mosasaurus hoffmanni (Mosasauridae, Reptilia) from the Upper Cretaceous, Upper Maastrichtian of The Netherlands
TLDR
The skull is robustly constructed and is the least kinetic in the Mosasauridae and, with a tightly assembled palatal complex, provided greater cranial stability in this large-headed mosasaur. Expand
A NEW BASAL MOSASAUROID FROM THE CENOMANIAN (U. CRETACEOUS) OF SLOVENIA WITH A REVIEW OF MOSASAUROID PHYLOGENY AND EVOLUTION
TLDR
Arguments supporting the importance of pelvic evolution to the aquatic adaptations of mosasaurs are given along with a discussion of recent hypotheses of limb evolution in mosasauroids. Expand
A New Lizardfish (Teleostei, Aulopiformes) from the Late Cretaceous Bearpaw Formation of Alberta, Canada, with a Revised Diagnosis of Apateodus (Aulopiformes, Ichthyotringoidei)
TLDR
This report shows promise for additional fish material preserved in mosasaur skeletons because they are relatively more commonly preserved than fish skeletons, and emends the diagnosis for Apateodus to include more cranial characteristics. Expand
New Material of the Mosasaur Plioplatecarpus nichollsae Cuthbertson et al., 2007, Clarifies Problematic Features of the Holotype Specimen
TLDR
Re-characterization of the species indicates its closest anatomical resemblance to descriptions given for the contemporary Platecarpus somenensis specimens (lower middle Campanian) from North America, which indicates that the current generic assignment for the latter taxon needs to be re-evaluated. Expand
Dallasaurus turneri, a new primitive mosasauroid from the Middle Turonian of Texas and comments on the phylogeny of Mosasauridae (Squamata)
TLDR
A new genus and species of primitive-limbed mosasauroid, Dallasaurus turneri, from the Middle Turonian of north-central Texas, is described on the basis of two incomplete skeletons and retains plesiomorphic characters but also exhibits certain characters shared with derived mosasaurs of the subfamily Mosasaurinae. Expand
Platecarpus Tympaniticus (Squamata, Mosasauridae): Osteology of an Exceptionally Preserved Specimen and Its Insights Into the Acquisition of a Streamlined Body Shape in Mosasaurs
TLDR
It is concluded that both an anterior migration of the rib cage and an increasing regionalization within the dorsal vertebral series are key features contributing to formation of a streamlined body profile in P. tympaniticus, and probably in many other hydropedal members of mosasaurs. Expand
A review of the Upper Cretaceous marine reptiles from Japan
Abstract Taxonomy and stratigraphic distribution of the Upper Cretaceous marine reptiles from Japan are reviewed. Remains of the Chelonioidea (sea turtles), Mosasauridae, and Plesiosauria are knownExpand
Convergent Evolution in Aquatic Tetrapods: Insights from an Exceptional Fossil Mosasaur
TLDR
This study demonstrates that a streamlined body plan and crescent-shaped caudal fin were already well established in Platecarpus, a taxon that preceded Plotosaurus by 20 million years, and expands the understanding of convergent evolution among marine reptiles, and provides insights into their evolution's tempo and mode. Expand
...
1
2
3
4
5
...