Dinosaur Evolution – From Five Fingers To Two Fingers?
This two-fingered dinosaur is said to evolved from three fingered dinosaurs, who evolved from four fingered dinosaurs, who evolved from five fingered dinosaurs. (Artist’s impression by Masato Hattori). Did dinosaur evolution really work this way?
A BBC article was published on March 25,2025, under the title of: “Unique two-clawed dinosaur discovered”
Some excerpts from the article are, as follows:
“At nearly a foot long, the claws themselves were much larger than their underlying bone, the study revealed.
Besides better grasping, the two-fingered hands may have been used for display, digging, or as formidable weapons.
The most famous two-fingered theropods are species within the group tyrannosaurids, which includes Tyrannosaurus rex, but Duonychus evolved its two-fingered hands separately from them and from other two-fingered theropods.
The specimen also preserves the first keratinous sheath of a therizinosaur, an element that covers the claw much like human fingernails, aiding defence, movement, or prey catching.
