The Smallest Stegosaur Footprint Ever Discovered Will Make You Squee With Pleasure

In an entire redefinition of the idea of ‘cute’, a global crew of paleontologists has recognized the tiniest identified stegosaur footprint.

Preserved within the stone within the Xinjiang Province of China for 100 million years, the print measures simply 5.7 centimeters (2.24 inches) lengthy, and was in all probability made by a child stegosaur (ichnogenus Deltapodus) across the dimension of a cat, the analysis crew stated.


Fascinatingly, though we do not know the wee little animal’s precise species, the print has allowed scientists to deduce that child stegosaurs could have walked in a different way from the adults.

“This footprint was made by a herbivorous, armoured dinosaur identified broadly as a stegosaur – the household of dinosaurs that features the famed stegosaurus,” stated paleontologist Anthony Romilio of the College of Queensland in Australia.

“Just like the stegosaurus, this little dinosaur in all probability had spikes on its tail and bony plates alongside its again as an grownup. With a footprint of lower than six centimeters, that is the smallest stegosaur footprint identified on the earth.”

The stegosaur footprint. (Xing et al., Palaios, 2021)

We all know that stegosaurs lived within the area. Dozens of tracks measuring as much as 30 centimeters lengthy have been discovered, in addition to skeletal stays. Elsewhere on the earth, stegosaur tracks hardly ever exceed 50 centimeters.

The footprints of very younger stegosaurs and different armored dinosaurs are extremely uncommon in comparison with different species, and it is not totally clear why.

It is doable that, dwelling in a herd, plenty of their prints had been walked over by bigger, heavier adults, however that does not fairly clarify how different herd dinosaurs’ child prints survived. Different explanations embrace speedy development – the animals could not have been small for lengthy sufficient to go away many tracks; or that the nursery habitats had been usually not conducive to the preservation of footprints.


Regardless of the cause for the shortage, by some means this one single monitor survived. The newborn’s three-toed foot pressed into the mud; time turned the mud to mudstone, making a mildew that stuffed with particles that in time turned to sandstone, making a forged of the tiny step that survived when the mudstone weathered away.

Though not plenty of element was preserved, the form of the print was intriguing – it wasn’t elongated just like the tracks of older stegosaurs, the researchers stated.

stego printsThe prints of older stegosaurs discovered on the website. (Xing et al., Palaios, 2021)

“Stegosaurs usually walked with their heels on the bottom, very like people do, however on all fours which creates lengthy footprints,” stated Romilio. 

“The tiny monitor exhibits that this dinosaur had been transferring with its heel lifted off the bottom, very like a chook or cat does at the moment. We have solely beforehand seen shortened tracks like this when dinosaurs walked on two legs.” 

This tantalizing discovery means that child stegosaurs may have moved extra calmly and nimbly than the adults, strolling on their toes and transitioning to heel-walking as they develop. Nevertheless, with solely a single footprint, it is unattainable to inform.


The precise particular person stegosaur that made it may have had a wierd approach of strolling; or maybe it put its foot down oddly, only for that one step.

“A whole set of tracks of those tiny footprints would supply us with the reply to this query,” stated paleontologist Lida Xing from the China College of Geosciences, who discovered the print, “however sadly we solely have a single footprint.”

The area by which the print was discovered has yielded 9 totally different dinosaur monitor websites; and the precise assemblage that included the child print additionally had 16 different prints from older stegosaurs. Now that one child print has been discovered, the crew intends to go looking the formation for clues that may assist us reply these fascinating questions.

The analysis has been printed in Palaios.


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