A sea monster that lived during the early dinosaur age is so unexpectedly colossal, it reveals that its kind grew to gigantic sizes extremely quickly, evolutionarily speaking at least.
The discovery suggests that such ichthyosaurs — a group of fish-shaped marine reptiles that inhabited the dinosaur-era seas — grew to enormous sizes in a span of only 2.5 million years, the new study finds.
To put that in context, it took whales about 90% of their 55 million-year history to reach the huge sizes that ichthyosaurs evolved to in the first 1% of their 150 million-year history, the researchers said.
"We have discovered that ichthyosaurs evolved gigantism much faster than whales, in a time where the world was recovering from devastating extinction [at the end of the Permian period]," study senior researcher Lars Schmitz, an associate professor of biology at Scripps College in Claremont, California, told Live Science in an email.
"We have discovered that ichthyosaurs evolved gigantism much faster than whales, in a time where the world was recovering from devastating extinction [at the end of the Permian period]," study senior researcher Lars Schmitz, an associate professor of biology at Scripps College in Claremont, California, told Live Science in an email.
"It is a nice glimmer of hope and a sign of the resilience of life — if environmental conditions are right, evolution can happen very fast, and life can bounce back." READ MORE...
