Because of the shape of the teeth
The cards were purchased at the Science Museum in Minneapolis Minnesota, but are probably available on the Internet. Technically the Whale Shark doesn't have teeth.
Reptiles are more closely related to mammals.
mammals tend to have heat in their bodies more than their surroundings
Crocodiles are cold blooded animals with scales. Mammals are warm blooded animals with hair that produce milk for their young. So crocodiles are not mammals; they are reptiles.
In terms of lineage, yes. Birds are descended from dinosaurs, which, along with lizards, belong to a group of reptiles called diapsids. Turtles come from a separate group of reptiles called anapsids.
Yes, mammals have more teeth that reptiles. The land mammal with the most teeth is the Giant Armadillo (Priodontes giganteus) with as many as 100 teeth. The average range for mammals however is 20-40. Reptiles rarely have many teeth, if any at all. The crocodile has the most, with around 80 teeth at a time. It replaces as many as 3000 in its lifetime, but this is over a long period of time.
The cards were purchased at the Science Museum in Minneapolis Minnesota, but are probably available on the Internet. Technically the Whale Shark doesn't have teeth.
There are a variety of features but one is the number of fenestrae in the skull. Mammals also have more differentiated teeth than reptiles. Furthermore, you can look at the gait. Mammals have a parasagittal stance, while most reptiles have a sprawled stance.
Reptiles are more closely related to mammals.
Birds do not have teeth. Mammals have differentiated teeth while the teeth in the mouth of a given reptile are more or less the same except for the fangs of venomous snakes.
Reptiles
they are closer to mammals
There are more mammals because of the dinosaurs.
While at first glance birds seem similar to mammals, they are more closely related to reptiles.
Fish
Neither...They were reptiles. dinosaurs were nether amphibians or mammals they were all reptiles, though they are more closely related to birds.
No. Mammals evolved from synapsid reptiles, a group not closely related to dinosaurs. Dinosaurs are more closely related to modern reptiles and birds than they are to mammals.