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Pluridens serpentis, became extinct around 66 million years ago. Scientists from the United Kingdom, France, and Morocco reconstructed this new species from “…two complete skulls and referred jaws.” Based on their reconstruction, the Pluridens serpentis was believed to have measured as long as 8 meters (26 feet). This is staggering as the majority of the species’ relatives only grew to about a few meters in length. It had “elongate and robust jaws, small teeth, and specialized tooth implantation” that would have helped it to catch small prey. Additionally, it wouldn’t have been able to see very far because it had such small eyes. According to the study, it probably “relied on nonvisual cues including touch and chemoreception during foraging, as in modern marine snakes.” ....
Abstract Recent progress in plate tectonic reconstructions has seen models move beyond the classical idea of continental drift by attempting to reconstruct the full evolving configuration of tectonic plates and plate boundaries. A particular problem for the Neoproterozoic and Cambrian is that many existing interpretations of geological and palaeomagnetic data have remained disconnected from younger, better-constrained periods in Earth history. An important test of deep time reconstructions is therefore to demonstrate the continuous kinematic viability of tectonic motions across multiple supercontinent cycles. We present, for the first time, a continuous full-plate model spanning 1 Ga to the present-day, that includes a revised and improved model for the Neoproterozoic–Cambrian (1000–520 Ma) that connects with models of the Phanerozoic, thereby opening up pre-Gondwana times for quantitative analysis and further regional refinements. In this contribution, we first summarise ....
Updated Mar 11, 2021 | 19:15 IST So, now we must get ready to revise our knowledge about the Earth s topography. Not seven, but eight continents sit atop it, nevermind the fact that the newest discovery is 94% under the sea. Zealandia is the submerged continent that lies next to Australia (Pic courtesy: GNS) Key Highlights Millions of years ago, Gondwana and Laurasia were two land masses formed out of one land mass Pangaea. The now discovered Zealandia formed about 5% of the land mass of Gondwana. Then Gondwana broke up and the fragmented land masses drifted apart with oceans between them. The Northern hemisphere seemed to have a far larger chunk of the land mass and a Dutch sailor who navigated the oceans without all this tectonic shifts theory knowledge thought that the Southern hemisphere ought to have another continent apart from Australia. ....