Monthly Archives: July 2021
- July 30, 2021
Besides the ghastly and impressive shapes of dinosaurs, there’s one thing that never ceases to amaze paleontologists and the general public around the world: their gigantic size.
Take Argentinosaurus, for instance. This titanosaur had a massive size and weighed between 50 and 90 tonnes, as believed by scientists. And if you look at today’s mammals, most of them are only between 10 and 100 kilograms in weight, while only the blue whale surpasses the size of dinosaurs. No wonder people look for titanosaur teeth for sale these days.
With a difference of such magnitude between the long-gone dinosaurs and today’s mammals, it makes sense why people wonder and question: how did dinosaurs grow so big?
Let’s look at the reasons that may have caused dinosaurs to grow so big.
Large body protected dinosaurs from most predators
- July 26, 2021
When trilobites emerged in the oceanic environment during the Cambrian period, they were already fully formed creatures. They had complex digestive systems, highly developed eyes, and functional calcite carapaces that were quite admirable. In other words, the most advanced life form at that moment on our planet were trilobites! While getting a well-preserved, authentic trilobite fossil is a daunting task, it is also among the most prized possession for a collector. So, we keep adding authentic trilobite fossils for sale to our selection.
Today, we will talk about trilobite eyes. It was fascinating that the creature developed a sophisticated visual system, although not the first one in the animal kingdom with eyes. But there were trilobite suborders, like Agnostina, who were primarily eyeless. The majority had compound pairs of eyes, typically