New insights into the evolution and paleoecology of Mosasaurs: …
20 小时之前 · “This study not only addressed the early evolution of the group, but also explored small- and large-scale aspects of their feeding biology,” Polcyn continued. ... of a fossilized mosasaur with three other mosasaurs in its stomach, one being the same species as the predator. "Whether that mosasaur was a scavenger or actively hunted its prey ...
Massive Mosasaurs May Have Evolved More Than Once
2024年5月2日 · Instead of one moment when the lizards slid into the water, researchers think that aquatic mosasaurs evolved at least three times. “Mosasaurs seem to have committed to marine life multiple times,”...
New insights into the evolution and paleoecology of mosasaurs
1 天前 · Paleontologist Michael Polcyn presented the most comprehensive study to date on the early evolution and ecology of these extinct marine reptiles. ... "Whether that mosasaur was a scavenger or ...
Mosasaurus - Wikipedia
Mosasaurus was a type of derived mosasaur, or a latecoming member with advanced evolutionary traits such as a fully aquatic lifestyle. As such, it had a streamlined body, an elongated tail ending with a downturn supporting a two-lobed fin, and two pairs of flippers.
Mosasaur - Wikipedia
The traditional view of mosasaur evolution held that all paddle-limbed (hydropedal) mosasaurs originated from a single common ancestor with functional legs (plesiopedal). However, this was shaken with the discovery of Dallasaurus, a plesiopedal mosasauroid more closely related to the Mosasaurinae than other mosasaurs. Bell and Polycn (2005 ...
Mosasauroid phylogeny under multiple phylogenetic methods
2017年5月3日 · In this study, we present the first mosasauroid phylogenetic analysis performed under different analytical methods, including maximum likelihood, Bayesian inference, and implied weighting maximum parsimony. The results indicate a lack of congruence in the topological position of halisaurines and Dallasaurus.
Rapid evolution, diversification and distribution of mosasaurs ...
2005年6月5日 · Highly-adapted marine reptiles called mosasaurs became the apex predators of the Earth's oceans in the last 25 million years of the Late Cretaceous. Returning to the sea during Cenomanian-Turonian...
Physical drivers of mosasaur evolution - ScienceDirect
2014年4月15日 · Using a database of 43 generic and 94 species-level taxa, we compare the taxonomic diversity and patterns of morphological disparity in mosasaurs with sea level, sea surface temperature, and stable carbon isotope curves for the Upper Cretaceous to explore factors that may have influenced their evolution.
Convergent Evolution in Aquatic Tetrapods: Insights from an
2010年8月9日 · While a precise tempo of secondary aquatic evolution among reptiles remains elusive, the fossil record clearly shows an exciting and important correlate between mode (convergent evolution) and tempo (time to achieve a fusiform body shape): ichthyosaurs, metriorhynchid crocodyliforms, and mosasaurs (as well as …
How Mosasaurs Slid Into the Sea - National Geographic
2011年7月28日 · Since the early 1980’s, the story of how whales walked into the sea has become one of the most celebrated of all evolutionary transitions. Pakicetus, Ambulocetus, Rodhocetus, and many, many more –...