Overview
A fossil initially misidentified as a frog has been classified as a new species of ancient ray-finned fish, designated *Leolepis matogrossensis*. This discovery occurred near South America's largest known meteorite crater. The species is characterized as a primitive member of the ray-finned fish group, which comprises 96% of extant bony fishes, including tuna, salmon, and cod. The fossil dates back approximately 254 million years.
Research Context
The fossil of *Leolepis matogrossensis* provides insight into life forms existing around 254 million years ago. Its identification as a ray-finned fish places it within a highly successful evolutionary lineage. The location of its discovery, near South America's largest known meteorite crater, situates the fossil within a geologically significant region, although the specific implications of this proximity are not detailed in the source.
Findings
- A newly identified species of ancient ray-finned fish, *Leolepis matogrossensis*, has been named.
- The fossil specimen was found near South America's largest known meteorite crater.
- Locals initially mistook the fossil for a frog.
- *Leolepis matogrossensis* is categorized as a primitive member of the ray-finned fish group.
- This group encompasses 96% of all bony fishes alive today, such as tuna, salmon, and cod.
- The species lived approximately 254 million years ago.