⏳🐢🦭

#ancient reptiles #reptile evolution #longevity #living fossils #prehistoric reptiles

⏳🐊➡️🐦

#archosaur evolution #deep time #reptile evolution #crocodylian #bird ancestry #mesozoic #diapsid lineage

🌳🐍🐦🫴

#amniote phylogeny #evolutionary tree #reptile evolution #bird evolution #mammal evolution #vertebrate clade

🦖❓🌿

#silesauridae #basal dinosauriform #triassic period #reptile evolution

🐢🏝️↔️🐢

#galápagos subspecies #tortoise variation #island differences #reptile evolution #endemic evolution