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claw

Anatomical part

2 image(s) · 3 News

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Diuqin is an unenlagiine dinosaur from the Late Cretaceous of what is now Argentina. Unenlagiines, known exclusively from South America, are usually classified as dromaeosaurs though this is sometimes debated. Like dromaeosaurs, they were covered in feathers, carnivorous, and had the large sickle-like claw on the inner toe of each foot. Unique to unenlagiines is their elongated snout, suggesting a piscivorous diet. Diuqin was a medium-sized unenlagiine, at about 4 m in length.

Diuqin is an unenlagiine dinosaur from the Late Cretaceous of what is now Argentina. Unenlagiines, known exclusively from South America, are usually classified as dromaeosaurs though this is sometimes debated. Like dromaeosaurs, they were covered in feathers, carnivorous, and had the large sickle-like claw on the inner toe of each foot. Unique to unenlagiines is their elongated snout, suggesting a piscivorous diet. Diuqin was a medium-sized unenlagiine, at about 4 m in length.

claw feather Argentina Cretaceous +5
Griffe de Trierarchuncus prairiensis de trois centimètres. Collection Max Rouger.
Taxa Trierarchuncus

Griffe de Trierarchuncus prairiensis de trois centimètres. Collection Max Rouger.

claw Trierarchuncus

News

100-million-year-old bug had crab-like claws unlike any known insect
claw Myanmar discovery
Deep inside 100-million-year-old amber from Myanmar, scientists uncovered a bizarre ancient bug with clawed front legs that look more like a crab’s pincers than anything seen in modern insects. The discovery is so unusual that researchers say these crab-like “chelae” evolved independently in this lineage, making it only the fourth known example of such structures appearing in insects at all.
25/05/2026 sciencedaily-paleo
This tiny claw in a 500-million-year-old fossil just rewrote the origin of spiders
claw Cambrian fossil specimen
What started as routine fossil cleaning turned into a major scientific surprise when researchers uncovered a tiny claw in a 500-million-year-old specimen where no claw should exist. That detail revealed Megachelicerax cousteaui, the oldest known relative of spiders, pushing the origins of this group back by 20 million years. The fossil shows that key features of modern spiders and horseshoe crabs were already emerging during the Cambrian Explosion.
03/04/2026 sciencedaily
This 67,800-year-old handprint is the oldest art ever found
claw Australia Indonesia discovery
Researchers have uncovered the world’s oldest known cave art—a 67,800-year-old hand stencil in Indonesia. The unusual, claw-like design hints at early symbolic thinking and possibly spiritual beliefs. This discovery also strengthens the case that humans reached Australia at least 65,000 years ago. It offers rare insight into the creative lives of some of our earliest ancestors.
22/03/2026 sciencedaily-human-evo