Dirley CortÃs & MarÃa EurÃdice PÃramo-Fonseca (2018)
Restos apendiculares de un ictiosaurio oftalmosÃurido del Barremiano inferior de Villa de Leiva, Colombia. [Appendicular remains of an ophthalmosaurid ichthyosaur from the lower Barremian of Villa de Leiva, Colombia]
BoletÃn de GeologÃa 40(1): 15-30.
DOI: http://dx.doi.org/10.18273/revbol.v40n1-2018001
http://revistas.uis.edu.co/index.php/revistaboletindegeologia/article/view/7953
The appendicular remains of an ophthalmosaurid Ichthyosaur from the Paja Formation in Villa de Leiva, Colombia (Lower Barremian) are here described. The morphological characteristics of the specimen are consistent with the genus Platypterygius. Nonetheless, the forefins of this specimen have a set of autapomorphic zeugopodium characters that differentiate this from other species of the genus whose appendicular remains are known. These include (1) a strongly concave facet for the anterior extrazeugopodial element on the humerus, directed anteriorly with a pronounced flange; (2) ulnar slits in the anterior and posterior surfaces; (3) a saddle-shaped anterior extrazeugopodial element with four facets joints; and (4) a distinctly massive and subtriangular pisiform. While the stratigraphic and geographic origin of the studied specimen is approximately equivalent to P. sachicarum, the absence of comparable material prevents including specimen in this species. This study is the first report of appendicular remains of Platypterygius in northern South America.
====ÄuriÄ Dragana, RadosavljeviÄ Dragoslav, PetroviÄ Dragana, RadonjiÄ MiloÅ, VojnoviÄ Petar (2017)
A new evidence for pachyostotic snake from Turonian of Bosnia-Herzegovina.
Geoloski anali Balkanskoga poluostrva 78: 17-21
doi:Âhttps://doi.org/10.2298/GABP1778017D
http://www.doiserbia.nb.rs/img/doi/0350-0608/2017/0350-06081778017D.pdf
Records of Cretaceous marine snakes from Bosnia and Herzegovina have been known for nearly a hundred years. This paper presents a new finding of a pachyostotic snake from the local quarry Dubovac, three kilometers northwest of BileÄa. The specimen consists of 29 vertebrae, seven of which are detached from the slab. The two best preserved vertebrae are almost square-shaped resembling Simoliophis rochebrunei but neural arches are much more swollen. Vertebrae and ribs are extremely pachyostotic as in Pachyophis woodwardi. Since there are no three-dimensional vertebrae of this species preserved from Bosnia and Herzegovina, precise identification was limited to a certain extent.