At www.eurekalert.org/pub_releases/2020-05/uom-trl051320.php … long legs make for good runners as any schoolboy knows. The chap with the long hairy legs is always going to win at the school sports day. What about long legs on a monster – such as Tyrannosaurus Rex. Paleontologists assumed the longs legs made for short bursts of speed in order to capture prey. A new study begs to differ. They evolved long legs in order to walk long distances. Longs legs = endurance and efficiency.
At https://phys.org/news/2020-05-prehistoric-anchovy-like-fish-large-fangs…. … anchovies with fangs – and a sabre tooth to spear prey. These were not your usual run of the mill anchovies, they were bigger and clearly predators. Modern anchovies feed on plankton. They are also very small. The prehistoric anchovies were not exactly monsters – but they were bigger than the modern variety. See also www.dailymail.co.uk/sciencetech/article-8311791/
At https://phys.org/news/2020-05-fossil-footprints-sydney-suburb-earliest.html … fossil footprints found in a Sydney suburb have been analysed and found to be the footprints of tretrapods.