Some recent papers:
A new marine vertebrate assemblage from the Late Jurassic (late Kimmeridgian) at KrzyÅanowice near IÅÅa in the NE margin of the Holy Cross Mountains in Poland is described. This new locality is rich in fossils of coastal and pelagic reptiles. The most frequent fossils are plesiochelyid turtle shell fragments and pliosaurid skull bones and teeth. The KrzyÅanowice vertebrate assemblage is similar to the Late Jurassic Boreal/Sub-Boreal localities of the Kimmeridge Clay in Great Britain and Svalbard Archipelago in the Arctic, in the presence of pliosaurids and long-necked plesiosaurids. However, plesiochelyid turtles and crocodylomorphs are similar to those from the Mediterranean/Sub-Mediterranean sites of the northern border of the Tethys Ocean, as, for example, in the Swiss Jura Mountains and Southern Germany. This unique composition of the KrzyÅanowice vertebrate fauna demonstrates that, during the Late Jurassic this new locality was located in the transitional palaeobiogeographic line referred to in this paper as the "Matyja-Wierzbowski Line". The new palaeobiogeographical reconstructions of Late Jurassic of Europe are based on the composition of the KrzyÅanowice locality and other sites with similar turtle-pliosaurid faunas which formed a long-term, stable ecological sympatry in marine ecosystems of the European Archipelago.
Teleosauroid extinction at the J/K boundary has been hypothesized to be an artifact of sampling only temperate paleolatitudes. Here, we describe the definitive youngest record of Teleosauroidea, from the upper Barremian of the paleotropics. The preserved material consists of dorsal vertebrae, dorsal ribs, dorsal and ventral osteoderms and epipodial remains. We refer the specimen to Teleosauroidea based on the large hourglass-shaped amphiplatyan morphology of the dorsal centra and rectangular dorsal osteoderms, which are much wider than long and have a straight anterior edge. The South American specimen is one of the largest known teleosauroids, with an estimated body length of 9.6 m. This is the first evidence of a marine crocodylomorph recorded from the Paja Formation of Colombia. The survival of Teleosauroidea in the paleotropics of northern Gondwana following the groupâs extinction in Europe supports the hypothesis that water temperature played a role in controlling the diversity and distribution of these large marine predators.
Daniel Tyborowski & BÅaÅej BÅaÅejowski (2019)
New marine reptile fossils from the Late Jurassic of Poland with implications for vertebrate faunas palaeobiogeography.
Proceedings of the Geologists' Association (advance online publication)
doi: https://doi.org/10.1016/j.pgeola.2019.09.004
https://www.sciencedirect.com/science/article/abs/pii/S0016787819301063
New marine reptile fossils from the Late Jurassic of Poland with implications for vertebrate faunas palaeobiogeography.
Proceedings of the Geologists' Association (advance online publication)
doi: https://doi.org/10.1016/j.pgeola.2019.09.004
https://www.sciencedirect.com/science/article/abs/pii/S0016787819301063
A new marine vertebrate assemblage from the Late Jurassic (late Kimmeridgian) at KrzyÅanowice near IÅÅa in the NE margin of the Holy Cross Mountains in Poland is described. This new locality is rich in fossils of coastal and pelagic reptiles. The most frequent fossils are plesiochelyid turtle shell fragments and pliosaurid skull bones and teeth. The KrzyÅanowice vertebrate assemblage is similar to the Late Jurassic Boreal/Sub-Boreal localities of the Kimmeridge Clay in Great Britain and Svalbard Archipelago in the Arctic, in the presence of pliosaurids and long-necked plesiosaurids. However, plesiochelyid turtles and crocodylomorphs are similar to those from the Mediterranean/Sub-Mediterranean sites of the northern border of the Tethys Ocean, as, for example, in the Swiss Jura Mountains and Southern Germany. This unique composition of the KrzyÅanowice vertebrate fauna demonstrates that, during the Late Jurassic this new locality was located in the transitional palaeobiogeographic line referred to in this paper as the "Matyja-Wierzbowski Line". The new palaeobiogeographical reconstructions of Late Jurassic of Europe are based on the composition of the KrzyÅanowice locality and other sites with similar turtle-pliosaurid faunas which formed a long-term, stable ecological sympatry in marine ecosystems of the European Archipelago.
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Dirley Cortes, Hans C.E. Larsson, Erin E. Maxwell, Mary L. Parra Ruge, Pedro Patarroyo & Jeffrey A. Wilson (2019)
An Early Cretaceous teleosauroid (Crocodylomorpha: Thalattosuchia) from Colombia.Â
Ameghiniana (advance online publication)
doi: 10.5710/AMGH.26.09.2019.3269
http://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/1041
An Early Cretaceous teleosauroid (Crocodylomorpha: Thalattosuchia) from Colombia.Â
Ameghiniana (advance online publication)
doi: 10.5710/AMGH.26.09.2019.3269
http://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/1041
Teleosauroid extinction at the J/K boundary has been hypothesized to be an artifact of sampling only temperate paleolatitudes. Here, we describe the definitive youngest record of Teleosauroidea, from the upper Barremian of the paleotropics. The preserved material consists of dorsal vertebrae, dorsal ribs, dorsal and ventral osteoderms and epipodial remains. We refer the specimen to Teleosauroidea based on the large hourglass-shaped amphiplatyan morphology of the dorsal centra and rectangular dorsal osteoderms, which are much wider than long and have a straight anterior edge. The South American specimen is one of the largest known teleosauroids, with an estimated body length of 9.6 m. This is the first evidence of a marine crocodylomorph recorded from the Paja Formation of Colombia. The survival of Teleosauroidea in the paleotropics of northern Gondwana following the groupâs extinction in Europe supports the hypothesis that water temperature played a role in controlling the diversity and distribution of these large marine predators.