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Message: <blockquote data-quote="MANTI5" data-source="post: 7665550" data-attributes="member: 627711">"Major differences leave a wide gulf between reptiles and mammals. The very name “mammal” points up one big difference: the existence of mammary glands that give milk for the young, which are born alive. Theodosius Dobzhansky suggested that these milk glands “may be modified sweat glands.” But reptiles do not even have sweat glands. Moreover, sweat glands give off waste products, not food. And unlike baby reptiles, the mammalian young have both the instincts and the muscles to **** the milk from their mother.Mammals have other features, also, that are not found in reptiles. Mammalian mothers have highly complex placentas for the nourishment and development of their unborn young. Reptiles do not. There is no diaphragm in reptiles, but mammals have a diaphragm that separates the thorax from the abdomen. The organ of Corti in the ears of mammals is not found in reptilian ears. This tiny complex organ has 20,000 rods and 30,000 nerve endings. Mammals maintain a constant body temperature, whereas reptiles do not.Mammals also have three bones in their ears, while reptiles have only one. Where did the two “extras” come from? Evolutionary theory attempts to explain it as follows: Reptiles have at least four bones in the lower jaw, whereas mammals have only one; so, when reptiles became mammals there was supposedly a reshuffling of bones; some from the reptile’s lower jaw moved to the mammal’s middle ear to make the three bones there and, in the process, left only one for the mammal’s lower jaw. However, the problem with this line of reasoning is that there is no fossil evidence whatsoever to support it. It is merely wishful conjecture." ---------- Post added at 01:03 AM ---------- Previous post was at 01:02 AM ---------- "Another problem involving bones: Reptilian legs are anchored at the side of the body so that the belly is on or very near the ground. But in mammals the legs are under the body and raise it off the ground. Regarding this difference, Dobzhansky commented: “This change, minor though it may seem, has necessitated widespread alterations of the skeleton and the musculature.” He then acknowledged another major difference between reptiles and mammals: “Mammals have greatly elaborated their teeth. Instead of the simple peg-like teeth of the reptile, there is a great variety of mammalian teeth adapted for nipping, grasping, piercing, cutting, pounding, or grinding food.”One last item: When the amphibian supposedly evolved into a reptile, the wastes eliminated were noted to have changed from urea to uric acid. But when the reptile became a mammal there was a reversal. Mammals went back to the amphibian way, eliminating wastes as urea. In effect, evolution went backward—something that theoretically it is not supposed to do."</blockquote>

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