Paleontologists know plenty of stuff regarding the ancestors of modern chondrichthyans and osteichthyans, but updates always occur in science. It’s also the case here, as a new discovery consisting of toothed fish remains that are 439 million years old suggests ...
A recent discovery of a 380-million-year-old heart left researchers in awe, but it is quite the deal when it comes to evolutionary history. The 380-million-year-old heart, the oldest ever found, coupled with a separate fossilized liver, stomach, and intestine (can ...
It has been hypothesized that teeth developed from exterior scales or that they were already present in the mouth at the time of their evolution. More support for the outside-in theory was discovered by researchers investigating a fossil of the ...
In order to live in the frigid waters of the Southern Ocean, Antarctic fish have developed adaptations over millennia. According to recent research, they have, though, lost their capacity to develop at the same speeds as their warmer-water counterparts, even ...