No. Fossil evidence indicates that platypuses have always existed more or less in their current form. Ancient platypuses were larger and had teeth, unlike modern platypuses, but platypuses do not provide any sort of evolutionary link between reptiles and mammals.
duck billed platypus
All reptiles and some mammals like platypus
While at first glance birds seem similar to mammals, they are more closely related to reptiles.
Born animals are mammals and eggs can be from birds, reptiles, amphibians and two types of mammals, the platypus and the echidna.
They have some similarities. Both reptiles and mammals are primarily land-dwelling vertebrates, though some species are aquatic.
It is a vertebrate because it has a spinal column in its skeletal system. Also it is a mammal, although it lays eggs, and every mammal (or other warm-blooded creature, like a bird) is a vertebrate.
All mammals have fur, some other animals can have fur e.g the platypus which lays eggs but has fur so it has characteristics of both mammals and reptiles but all mammals have fur.
Yes. A cloaca is present in marsupials and monotremes, as well as in birds, amhibians and reptiles. Placental mammals do not have a cloaca.
The three types of mammals that lay eggs are monotremes, which include the platypus and the echidna. Monotremes are unique among mammals as they reproduce by laying eggs rather than giving live birth. These mammals possess a cloaca, a single opening for excretion and reproduction, similar to reptiles and birds. The platypus is known for its duck-bill and webbed feet, while echidnas have spiny coats and are often called spiny anteaters.
There are many animals that are not classed as mammals or reptiles. firstly, you have the entire invertebrates group. for example spiders and insects. secondly, you have the vertebrates that are not mammals or reptiles, for example, birds and fish. but if you are wondering the name that incorporates the platypus and echidna, then they are called Monotremes
No, alligators are not mammals, they are reptiles.
Turtles are reptiles, not mammals.