Patagotitan, king of the dinosaurs (in Spanish)
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Museo PaleontolÃgico de Elche in Spains has unique dinosaur collection, includingÂ
Sphinophorosaurus from Niger (in Spanish)
esconde algunos restos fÃsiles Ãnicos en el mundo, entre los que destaca un di
Also, only an abstract for now...
Ingmar Werneburg (2019)
Functional categories and ontogenetic origin of temporal skull openings in amniotes.
Frontiers in Earth Science (advance abstract)Â
doi: 10.3389/feart.2019.00013
The rise of phylogenetic systematics (Hennig, 1950) uncovered many natural groups of amniotes with Synapsida â characterized by one temporal opening, and Reptilia (Modesto and Anderson, 2004) â which contains ancestral, typically anapsid groups, without temporal openings, and Diapsida, with two temporal openings and diverse secondary modifications. The ancestrally anapsid parareptiles partly show, with certain ontogenetic, inter- and intraspecific variation, one opening or marginal excavation in their temporal region (Cisneros et al., 2004;Tsuji and MÃller, 2009;Macdougall and Reisz, 2014), although evidence from other characters clearly separates them from Synapsida (MÃller, 2004;Tsuji et al., 2012;Brocklehurst et al., 2018). Furthermore, the phylogenetic position of some early âclassicalâ synapsid groups (e.g.,varanopsids) is rather controversial, as they appear within Reptilia in modern phylogenetic analyses (Angielczyck and Kammerer, 2018;Laurin and PiÃeiro, 2018). Compared to historical classifications (Osborn, 1903;Williston, 1917;Goodrich, 1930), there is a common consensus that temporal openings are only a weak indication for higher taxon interrelationship, although it can be informative on lower taxonomic level (MÃller, 2003;Laurin and PiÃeiro, 2018;MacDougall et al., 2018). Here, I present a rather morphofunctional categorization of temporal openings and provide an ontogenetic explanation on their evolutionary origins.
On other topics...