As nouns the difference between mammal and notoungulate

is that mammal is an animal of the class mammalia, characterized by being warm-blooded, having hair and feeding milk to its young while notoungulate is (biology) any of several extinct, hoofed, herbivorous mammals, of the order (taxlink) , from cenozoic south america.

As an adjective notoungulate is

characteristic of these animals.

As adjectives the difference between cenozoic and notoungulate

is that cenozoic is (geology) of or pertaining to the cenozoic while notoungulate is characteristic of these animals.

As a proper noun cenozoic

is (geology) a geologic era within the phanerozoic eon comprising the paleogene and neogene from about 65 million years ago to the present, when the continents moved to their current position and modern plants and animals evolved.

As a noun notoungulate is

(biology) any of several extinct, hoofed, herbivorous mammals, of the order (taxlink) , from cenozoic south america.

As an adjective immature

is not fully formed or developed, unripe, not mature.

As a noun oogonium is

.

As an adjective ovarian

is relating to the ovaries.

As a noun oogonium is

an immature ovarian egg within a developing fetus.

As nouns the difference between egg and oogonium

is that egg is (zoology|countable) an approximately spherical or ellipsoidal body produced by birds, snakes, insects and other animals, housing the embryo during its development while oogonium is .

As a verb egg

is to throw eggs at or egg can be to encourage, incite.

As nouns the difference between fetus and oogonium

is that fetus is while oogonium is .

As nouns the difference between sac and oogonium

is that sac is while oogonium is .

As a proper noun sac

is .

As adjectives the difference between hyperbolic and nonhyperbolic

is that hyperbolic is of or relating to hyperbole while nonhyperbolic is not hyperbolic.

In biology|lang=en terms the difference between icefish and notothen

is that icefish is (biology) any of many perciform fish, of the order notothenioidei, that live in the cold, continental-shelf waters of the antarctic while notothen is (biology) any icefish of the suborder notothenioidei.

As nouns the difference between icefish and notothen

is that icefish is (biology) any of many perciform fish, of the order notothenioidei, that live in the cold, continental-shelf waters of the antarctic while notothen is (biology) any icefish of the suborder notothenioidei.

As a proper noun notothenioidei

is .

As a noun notothen is

(biology) any icefish of the suborder notothenioidei.