Allosaurus Caring for her Chick

Allosaurus was about as long as a T. rex,  Both were about 40 feet long.  However, Allosaurus lived in the Jurassic Period.  T. rex lived in the Cretaceous Period.  Allosaurus lived 85 million years before T. rex.  So, they never would have fought for the top predator spot.  Allosaurus, like all Theropods, probably cared for their young.  Since crocodiles and alligators carry their young in their mouth it seems to me that it is reasonable to assume large Theropods did the same.  By the way, Theropods are or were the meat eating or carnivorous dinosaurs.  (Except some biologist consider all birds to be "Avian Theropod Dinosaurs.")

Allosaurus probably had a weight of up to 8,800 lbs and a mass of up to  4,000  kg.  These estimates are based on some fragmentary material.  This material also shows that the largest Allosaurs may have reached 43 feet in length.  This weigh or mass is much less than a T. rex of comparable length. A large T. rex had a weight of possibly 10 tons or 20,000 lbs and a mass of over 9,000 kg
The most well known species of Allosaur is Allosaurus fragilis.  MOST of the specimens found of Allosaurs are considerably smaller than the maximum estimate...with a length of closer to 30 feet or about 11 meters.  They have found MANY Allosaurus fossilized skeletons.  Many of them were found here in my home state of Utah, USA.  Some paleontologists think that these large Theropods just kept growing their entire life!

Allosaurus Caring for her Chick

An interesting point on this drawing:  Imagine that a trait evolved in Allosaurus for the females having a gap in their teeth in their lower jaw in order to create a nice window for the young to breathe and look through.   That is how I inadvertently drew this picture.  (with a gap in the teeth)  I actually drew this over a year ago.  I just found it in my work room closet.   I added a few things but it is essentially the same drawing.  More recent drawings of Theropods have more accurate mouth shapes.   Still, I think kids will enjoy coloring this.   This is a kind of cartoony drawing for younger kids to color.  (Dinosaurs actually did NOT have eyelashes.  Eyelashes in a cartoon drawing usually indicate a female.)