There is some evidence that reptiles called cynodonts may have had whisker-like hairs around their mouths. If true, then what can be properly said of hair?
A) It is a shared derived character of mammals, even if cynodonts continue to be classified as reptiles.
B) It is a shared derived character of the amniote clade, and not of the mammal clade.
C) It is a shared ancestral character of the amniote clade, but only if cynodonts are reclassified as mammals.
D) It is a shared derived character of the mammals, but only if cynodonts are reclassified as mammals.
Cnidarians have specialized stinging cells called cnidocytes
(a) Age of maturity of Atlantic cod decreased during the fishery collapse. (b) Evidence of maturatio
Persian leopard (Panthera pardus ciscaucasica), also called Caucasian leopard
Turtles neither reptiles or amphibians
In 1839 Mary Cragin, at the age of twenty-nine, became a convert to John Humphrey Noyes’s “communism
Tumor marker analysis of a patient with no evidence of disease monitored for tumor recurrence. The ...