The current scientific consensus suggests that Nyasasaurus may be the oldest known dinosaur.
Nyasasaurus: A Potential Pioneer
A 2013 study proposed that Nyasasaurus parringtoni, dating back to the late Anisian stage (approximately 243 million years ago), could be the earliest dinosaur discovered. This makes it potentially 10 to 15 million years older than previously identified early dinosaurs like Herrerasaurus.
Why the Uncertainty?
While Nyasasaurus is a strong contender, its classification isn't definitive due to the limited fossil evidence available. The original fossils are fragmentary, and further discoveries are needed to solidify its position on the dinosaur family tree.
Other Early Dinosaur Contenders
Although Nyasasaurus is the oldest potential dinosaur, other early dinosaurs that are more definitively classified include:
- Herrerasaurus: One of the earliest relatively well-understood dinosaurs.
- Eoraptor: Another early dinosaur from the same time period and location as Herrerasaurus.
Summary
While the exact identity of the oldest dinosaur remains a subject of ongoing research, Nyasasaurus currently holds the most promise as potentially the earliest known member of the dinosaur lineage. However, its status is subject to change as new fossil discoveries and analyses emerge.
