correction needed
"6m-long (9ft 8in) " - it's more like 20ft isn't it?
They may have been cold-blooded, but it turns out dinosaurs were caring parents – arranging their eggs neatly and letting their scaly offspring stay in the nest until they had at least doubled in size. Fossil-bothering boffins poking around in a 190-million-year-old nest in South Africa have published a new study into the the …
Bearing in mind that lizards shouldn't even be part of herpetology, but some kind of cold-blooded precursor to the rest of aves, then yes. Big yes.
And don't start throwing megalothermy about. It's an embarrassing parachute for biologists with a piss-awful grasp of physics.
Megalothermy is the idea that a big dino, while it may have been "cold blooded" in the metabolic sense (not burning calories just to stay warm), might still have had a blood temperature much higher than the surroundings.
The idea is that the incidental heat (e.g. heat produced by a muscle being used to maintain posture) would be lost slower due to a big dino having less surface area relative to its volume (surface area varies as the square of size, volume as the cube of size, so double size, surface area goes up by 4, volume by 8, area/volume goes down by 2).
However, not everything scales when you make an animal bigger, so a bigger animal won't necessarily have a lower area/volume ratio, and even if it does, differences in things like convective losses tend to eliminate the differences.
"They may have been cold-blooded"?
More likely not.
The sole surviving branch of the dinosaurs (birds) is warm-blooded.
One of the three types of scales on birds' legs can be induced (by chemical treatment of the embryo) to turn into feathers (down feathers, not flight feathers).
Fossils of several dinosaur species have been found to have feathers (flight feathers in archaeopterix, down feathers in others).
Down feathers provide insulation. Important in WARM-blooded animals.
So probably warm-blooded.
Of course, you did say "may," but in context that reads as "Despite being cold-blooded..."
Now I shall go outside to watch the dinosaurs.
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You might at least mention Jack Horner's discovery of Maiasaura in the 70's. Arranged nests, embryonic dinos, etc. They established long ago that dinos stayed in the nest and were cared for by the adults. I saw Horner himself talk about that dig in 1986.
This new find adds more to the story and relates to earlier animals, but it's decades-old news that dinos cared for their young. And were probably not cold-blooded, by the way.
Headsmack for not doing basic research first...