fin-like paddle tail · All Facts

fin-like paddle tail
Spinosaurus had a vertically expanded, fin-like paddle tail that generated more thrust in water than typical terrestrial dinosaur tails — direct evidence of aquatic propulsion.
SrcNature (Ibrahim et al., 2020)

Next evidence →flexible soft tissue and vessel-like structuresIn 2005, researchers recovered flexible soft tissue and vessel-like structures from a ~68-million-year-old T. rex femur after dissolving the mineral matrix.

More packs

Dino
Body
Weird
Animals
Snakes
Insects
Ocean
Hidden Gems
Space
Mummies

More in Dino

eutherian mammals and precocial birdsBone histology shows dinosaurs grew at accelerated rates versus living reptiles — large species reached rates comparable to eutherian mammals and precocial birds.
permineralization and mineral replacementMost dinosaur “bones” on display are fossils formed by permineralization and mineral replacement — original bone pores and tissue swapped or infilled by silica and other minerals.
22 metresBrachiosaurus had front legs longer than its hind legs — giving a giraffe-like upward tilt for browsing tall trees; NHM lists it at about 22 metres long.
chestnut to reddish-brownFossilized melanosomes in Jehol theropods show Sinosauropteryx's dark tail stripes were likely chestnut to reddish-brown — not unknown color forever.

Open full Dino pack →

← Back to evidence