placentals
Mammals with afterbirth
Placentals are mammals whose young develop inside the mother's uterus, nourished through a placenta until birth.
This distinguishes them from marsupials, which carry undeveloped young in pouches, and monotremes, which lay eggs.
Placentals comprise the vast majority of mammal species—humans, dogs, whales, bats, elephants.
The technical term is Eutheria.
Gnawing mammal order
- primatesOrder of higher mammals
- carnivoresAnimals eating only meat
- ungulatesHoof-bearing animals
- cetaceansAquatic mammals, fully marine
chiroptera · bats · insectivores · lagomorphs · pinnipeds
Carrying offspring in womb
- umbilical cordFetal-placental connection
- amniotic sacMembrane enclosing developing fetus
- fetusGestating offspring
- parturitionAct of giving birth
lactation · mammary glands · neonate · birth canal · uterus · implantation · prenatal · embryo
Those from whom one descends
- natural selectionDifferential reproductive success
- speciationFormation of distinct species
- fossilsPreserved ancient organism traces
- phylogenyEvolutionary relationships among organisms
genetics · mutation · extinction · paleontology · divergence · cladistics · lineage · Cretaceous
Animal body hair
- hairFibrous scalp covering
- neocortexHigher cognition brain region
- diaphragmMuscle separating chest, abdomen
- dentitionOral tooth arrangement
endothermic · malleus · incus · stapes · molars · canines · incisors · jaw
Organism's natural environment
- nicheRecessed wall space
- biodiversityRange of life forms
- predationHunting and consuming prey
- herbivoryPlant consumption by animals
omnivory · adaptation · ecosystem · keystone species · population · endemic · conservation · territory
rodents
Gnawing mammal order
- primatesOrder of higher mammals
- carnivoresAnimals eating only meat
- ungulatesHoof-bearing animals
cetaceans · chiroptera · bats · insectivores · lagomorphs · pinnipeds
gestation
Carrying offspring in womb
- umbilical cordFetal-placental connection
- amniotic sacMembrane enclosing developing fetus
- fetusGestating offspring
parturition · lactation · mammary glands · neonate · birth canal · uterus · implantation · prenatal · embryo · nursing
ancestors
Those from whom one descends
- natural selectionDifferential reproductive success
- speciationFormation of distinct species
- fossilsPreserved ancient organism traces
phylogeny · genetics · mutation · extinction · paleontology · divergence · cladistics · lineage · Cretaceous · Cenozoic
fur
Animal body hair
- hairFibrous scalp covering
- neocortexHigher cognition brain region
- diaphragmMuscle separating chest, abdomen
dentition · endothermic · malleus · incus · stapes · molars · canines · incisors · jaw · vertebrae
habitat
Organism's natural environment
- nicheRecessed wall space
- biodiversityRange of life forms
- predationHunting and consuming prey
herbivory · omnivory · adaptation · ecosystem · keystone species · population · endemic · conservation · territory · migration
placentalsmarsupials
Pouch-bearing mammals
monotremes · kangaroos · platypus · echidnas · koalas
- placental mammalsAnimals with internal fetal nourishment