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[dinosaur] Mauisaurus (Plesiosauria) a nomen dubium + Thoracosaurus from Sweden + more




Ben Creisler
bcreisler@gmail.com


Some not-so-recent marine reptile-related refs that have not been mentioned yet:

Norton Hiller, José P. O’Gorman, Rodrigo A. Otero & Al A. Mannering (2017)
A reappraisal of the Late Cretaceous Weddellian plesiosaur genus Mauisaurus Hector, 1874.
New Zealand Journal of Geology and Geophysics (advance online publication)
doi:  http://dx.doi.org/10.1080/00288306.2017.1281317   
http://www.tandfonline.com/doi/full/10.1080/00288306.2017.1281317



Research carried out on austral plesiosaurs from the Weddellian Biogeographic Province in the decade since the last attempt to characterise the New Zealand elasmosaurid, Mauisaurus haasti Hector, 1874 (On the Fossil Reptilia of New Zealand. Transactions and Proceedings of the New Zealand Institute 6: 333–358), has prompted a reappraisal of this taxon and a new consideration of its relationships. The hypodigms used in previous descriptions of the species are shown to include specimens from a number of different taxa, and the defining apomorphy of Mauisaurus, a hemispherical capitulum on the femur, has now been observed in specimens known to belong to different clades. Mauisaurus is now regarded as nomen dubium with possible affinities with the Subfamily Aristonectinae. A re-assessment of the most complete specimen previously assigned to Mauisaurus suggests it is a typical long-necked elasmosaurid closely comparable to Tuarangisaurus keyesi Wiffen and Moisley, 1986 (Late Cretaceous reptiles (Families Elasmosauridae and Pliosauridae) from the Mangahouanga Stream, North Island, 

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A related updated ref (already posted) now in final form with issue and page assigned:

José P. O'Gorman, Rodrigo A. Otero, Norton Hiller, John Simes & Marianna Terezow (2017)
Redescription of Tuarangisaurus keyesi (Sauropterygia; Elasmosauridae), a key species from the uppermost Cretaceous of the Weddellian Province: Internal skull anatomy and phylogenetic position.   
Cretaceous Research 71: 118–136
doi: http://dx.doi.org/10.1016/j.cretres.2016.11.014
http://www.sciencedirect.com/science/article/pii/S0195667116303597


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Jan S. Adolfssen, Jesper Milàn & Matt Friedman (2017)
Review of the Danian vertebrate fauna of southern Scandinavia. 
Bulletin of the Geological Society of Denmark 65:. 1–23
https://2dgf.dk/publikationer/bulletin/bulletin-volume-65-2017/

Free pdf:
https://2dgf.dk/xpdf/bull65-1-23.pdf



The vertebrate fauna in the Danian deposits of Denmark and southern Sweden is reviewed. Remains of sharks and bony fishes are widely distributed but not common in the Danian limestones, with the exception of the K/Pg-boundary clay, the Fiskeler Member, at the UNESCO World Heritage Site Stevns Klint, which can include substantial quantities of shark teeth and fragments of bony fishes. Articulated remains of bony fishes are known from the Fiskeler Member at Stevns Klint and the København Limestone Formation in the Limhamn quarry. Sharks are only found as isolated teeth and rare isolated vertebrae. The gavialoid crocodylian Thoracosaurus is represented by a complete skull and associated postcranial material and an additional jaw fragment from the Limhamn quarry. Remains of a crocodylian skull, a cervical vertebra, a limb bone and isolated teeth have been found in the Faxe quarry, and a single possibly alligatorid tooth is known from the basal conglomerate of the Lellinge Greensand Formation from now closed exposures below Copenhagen. Fragmentary turtle material has been found in the Faxe and Limhamn quarries and in the København Limestone in Copenhagen, and bird remains are exclusively known from the Limhamn quarry. Despite the fragmentary nature of many of the finds, the total picture of the vertebrate fauna of southern Scandinavia is quite diverse comprising four classes, 23 orders, 41 families and 54 identifiable genera of which most can be identified to species level. 

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Michael J. Everhart (2016)
Rare Occurrence of Mosasaur (Squamata: Mosasauroidea) Remains in the Blue Hill Shale (Middle Turonian) of Mitchell County, Kansas.
Transactions of the Kansas Academy of Science 119, Issue 3 - 4: 375-380 
doi: 10.1660/062.119.0410
http://www.bioone.org/doi/full/10.1660/062.119.0410

No abstract but with page preview

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Jane P. Davidson (2016)
The Last Time: Edward Drinker Cope's Last Trip to Kansas.
Transactions of the Kansas Academy of Science 119(3 - 4): 363-374 
doi: http://dx.doi.org/10.1660/062.119.0409
http://www.bioone.org/doi/abs/10.1660/062.119.0409

In late summer, 1893, Edward Drinker Cope (1840–1897) conducted an exploratory and networking expedition through the Dakotas, eastern Wyoming, Kansas, the Panhandle areas of Oklahoma and Texas, and the southwestern part Missouri. This was his last trip to the West. His itinerary, observations and activities were discussed in several letters home as well as in subsequent publications.


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