Lets go shopping now, every lizard's learning how

[BrianSoddingBoru4]

One big difference is the position of the legs. Dinosaurs had legs directly beneath them while lizards have legs that sprawl outward and to the side.


Sprawled out legs of a lizard 


The legs underneath the body on a Dinosaur

Yup, that’s one of the crucial differences. Scales are all but immaterial in determining relationships between the groups - all lizards and dinosaurs and birds have scales, but not all scaled animals are lizards, dinosaurs or birds.

Boru

[Anomalocaris]

One big difference is the position of the legs. Dinosaurs had legs directly beneath them while lizards have legs that sprawl outward and to the side.


Sprawled out legs of a lizard 


The legs underneath the body on a Dinosaur

good enough as far as it goes, but not entirely accurate. but the devil is in the details.   Some lizards, notably the monitor lizard in question here, blurs the line somewhat because it is capable of a semi-erect gait where their upper legs are held angled steeply down instead of sticking out side ways. 

to blur the line further, dinosaurs ancester’s were bipedal.  So only dinosaurs hip and hind legs have developed a fully erect posture.   In dinosaurs that reverted back to walking on all fours, the shoulder and front  legs are also only semi-erect, upper leg held angled steeply down, and incapable of being fully erect where upper legs go straight down.    If dinosaur shoulder girdle was adopted for fully erect gait, then they probably could not have evolved flight.

[Brian37]

Hate to burst everyone's bubble but all life is made of DNA. Adinine, Guanine, Thymine and Cytosine.

[BrianSoddingBoru4]

Hate to burst everyone's bubble but all life is made of DNA. Adinine, Guanine, Thymine and Cytosine.

Which has absolutely NOTHING to do with whether birds are dinosaurs are lizards. If you’re going to claim bubble-bursting, you’ll need to point out something relevant to the discussion.

Boru

[Anomalocaris]

Hate to burst everyone's bubble but all life is made of DNA. Adinine, Guanine, Thymine and Cytosine.

Uh,  no.    All life are not ‘MADE OF” DNA, any more than all computer is made of programming codes.    Only maybe 1% of 1% of you by mass is actually the stuff of DNA.   An entire class of very numerous and important cells that is the only reason why your heart beat and you staying oxygenated and alive in fact have no DNA whatsoever.