GnathostomataStagonolepididae

Stagonolepis robertsoni

Stagonolepis robertsoni skeletal reconstruction, left lateral view, length ~3.7 m.
Scale bar = 1 meter
Taxon
Stagonolepis robertsoni Agassiz, 1844
Reconstructed length
~3.7 m (12 feet)
View
Left lateral
Drawing
© Scott Hartman
Drawn
2016
Clade
  1. Gnathostomata
  2. Tetrapoda
  3. Amniota
  4. Sauropsida
  5. Archosauromorpha
  6. Archosauria
  7. Pseudosuchia
  8. Stagonolepididae

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Stagonolepis was a Late Triassic aetosaur, a group of armored, plant-eating pseudosuchians on the crocodile-line of archosaurs. Stagonolepis was the first aetosaur ever described, from bony scales Louis Agassiz mistook for a fish. Very much not a fish, Stagonolepis had complex armor and a blunt, upturned pig-like snout. While long assumed to be plant-eaters, recent research has suggested aetosaurs may have pursued a more omnivorous diet. The skeletal below has the armor removed, so you can see more of the underlying bones.

Without armor

Stagonolepis robertsoni — Without armor.
Drawn 2016