Birds form one of six basic animal groups, with the others being amphibians, fish, invertebrates, mammals and reptiles. They are endothermic vertebrates, characterized by feathers, toothless beaked jaws, a high metabolic rate, a four-chambered heart, and a lightweight but strong skeleton. They reproduce by laying of hard-shelled eggs (eggs fertilize inside the female). The fossil record indicates that birds are the last surviving group of dinosaurs. So, they are also termed avian dinosaurs.
Birds (Aves) range in size and weight from the 5 cm (2 in) and 1.6-2 grams bee hummingbird to the 2.75 m (9 ft) and 104-156 kg (229-344 lbs) ostrich. Here are the top 15 largest (by body weight) living bird species.
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2015 Norwegian catastrophe drama film The Wave tells a fictional story about Geiranger, a small tourist village in Sunnmøre region of Møre og Romsdal county in the western part of Norway. In the movie, the village threatened a huge mass of rock tumbles into Geirangerfjord (which is one of Norway’s most visited tourist sites, and it was listed as a UNESCO World Heritage Site in 2005). The rock sets off a 300 feet megatsunami. The villagers must rush to the mountains in ten minutes, before “the wave” reaches them.
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Identifying the largest dinosaurs ever lived isn’t an easy task, because it’s very rare to unearth a complete fossil. Furthermore, only a tiny percentage of these amazing animals ever fossilized, and most of these “lucky” bodies will remain buried underground forever. So, we may never know exactly what dinosaur was the biggest (or the tiniest) ever.
Despite this fact, size always has been one of the most interesting aspects of these prehistoric animals. There are extreme variations in their size, from the tiny hummingbirds, which can weigh as little as three grams, to the titanosaurs, which could weigh as much as 70 tonnes, or even more.
Here are some of the largest dinosaurs ever lived.
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Previously, I published a post about the largest crocodiles ever recorded. All sizes in that post were recorded in the recent times. The crocs listed were large, yes, but not as big as most people think. But in the prehistoric ages, some animals were much bigger than today’s counterparts – including crocodiles. So, what was the World’s biggest crocodile ever lived? Here are the top six candidates.
Continue reading World’s top 6 biggest prehistoric crocodiles ever lived