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monotremes and marsupials
Terms in this set (43)
all mammals have hair and mammary glands T/F
all mammals are endothermic with a ___ chambered heart
mammals have ___ ear bones
Mammals. these have; or had; one lateral temporal opening on each side of the skull
the first synapsids were the _____
Pelycosaurs - large lizard like creatures
The next group of synapsids to evolve were the _________
therapsids. more upright posture
The ________ were the last group of therapsids to evolve.
earliest mammals lay eggs and were endothermic T/F
The ________ are the only living egg-laying (oviparous) mammals.
here are only _____ living species of monotremes, the duck-billed platypus, and four species of echidna (spiny anteater).
Monotremes have no gestation period (period of pregnancy) T/F
_________ have an elongated snout and no teeth.
They eat termites, ants, and other insects
Protected by spines
The newly hatched young are placed in a pouch
Have electric field detectors on their bills
____________ live bearing (viviparous) with an abdominal pouch.
embryos have a primitive yolk sac embryo
Marsupials have a ___ gestation period
marsupials are born very
marsupials have a long period of
You can identify an opossum skull by the large number of ________
Most living mammals are __________
placental mammals (eutherians).
Compared to marsupials placental mammals have a _______ gestation period and a ______ lactation period.
The embryo is retained in the mother for some time, nourished through the _______.
The oldest living group of placental mammals
Insectivores (Soricomorpha). Includes shrews, moles, and hedge hogs
They have long _____ and numerous sharp _______
some shrews have ________
The second largest group of mammals
The only true flying mammals
In eastern North America many bats are dying from a fungal infection called the
white nose syndrome
largest group of mammals
Rodents have 2 lower and 2 upper incisors that are like _______
Rodents include ________
arboreal (tree dwelling), burrowing, aquatic, and even gliding (flying squirrel) forms.
Rabbits, hares, and pikas
The lagomorphs have _____ upper incisors and have _______ on the inside and outside edges of their incisors, unlike rodents.
Whales, dolphins, and porpoises. toothless or with teeth
Toothless whales include
Right Whales, Humpback Whales, the Blue Whale, and others
Toothed whales include
dolphins, porpoises, and the sperm whale and use echolocation
seals, sea lions, walruses
anteaters, armadillos, sloths
mammals that have trunks. 1 asian and 2 african species
sea cow. mermaid
animals with hooves
- odd-toed hoofed mammals
even-toed hoofed mammals
Horses, zebras, rhinos. 1 or 3 toes
Includes deer, antelope, cattle, sheep, goats, bison, buffalo, swine, camels, hippopotamuses, and others. have 4 toes.
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