protobirds
Early winged reptiles
Protobirds are prehistoric creatures representing transitional forms between dinosaurs and modern birds.
The term covers feathered dinosaurs and early avian species like Archaeopteryx that possessed both reptilian and bird-like features: Fossils of protobirds reveal how flight may have evolved.
Scientists study protobirds to understand the evolutionary origins of feathers, wings, and hollow bones.
Connecting two phases
- speciationFormation of distinct species
- adaptationFitting to new conditions
- phylogenyEvolutionary relationships among organisms
- cladisticsClassification by common descent
fossil record · natural selection · homology · divergence · common ancestor · missing link · gradualism · selection pressure
Prehistoric transitional flying creature
- theropodsCarnivorous bipedal dinosaurs
- dinosaursExtinct prehistoric reptiles
- VelociraptorFast predatory dinosaur genus
Engineless aerial movement
- powered flightAircraft movement via engines
- wingbeatSingle wing oscillation
- airfoilLift-generating curved surface
- liftMechanism for vertical transport
aerodynamics · flapping · soaring · wing loading · flight feathers · pouncing · takeoff · maneuverability
Bird's complete feather coat
- downToward lower ground
- quillsHollow defensive animal spikes
- barbsSharp points or jibes
- rachisCentral supporting shaft
keratin · filaments · contour · asymmetrical · symmetrical · insulation · display · coloration
Effects on the mind
- preservationMaintaining something's condition
- specimensRepresentative items for examination
- slabsThick flat pieces
- excavationAct of unearthing
sediment · limestone · skeletal remains · counterpart · dating · stratigraphy · Mesozoic · Jurassic
transitional
Connecting two phases
- speciationFormation of distinct species
- adaptationFitting to new conditions
- phylogenyEvolutionary relationships among organisms
cladistics · fossil record · natural selection · homology · divergence · common ancestor · missing link · gradualism · selection pressure
Archaeopteryx
Prehistoric transitional flying creature
- theropodsCarnivorous bipedal dinosaurs
- dinosaursExtinct prehistoric reptiles
- VelociraptorFast predatory dinosaur genus
gliding
Engineless aerial movement
- powered flightAircraft movement via engines
- wingbeatSingle wing oscillation
- airfoilLift-generating curved surface
lift · aerodynamics · flapping · soaring · wing loading · flight feathers · pouncing · takeoff · maneuverability
plumage
Bird's complete feather coat
rachis · keratin · filaments · contour · asymmetrical · symmetrical · insulation · display · coloration · iridescence
impressions
Effects on the mind
- preservationMaintaining something's condition
- specimensRepresentative items for examination
- slabsThick flat pieces
excavation · sediment · limestone · skeletal remains · counterpart · dating · stratigraphy · Mesozoic · Jurassic · Cretaceous
wishbone
Forked poultry bone
- hollow bonesAir-filled skeletal structure
- teethEnamel-covered chewing structures
- halluxFoot's innermost digit
protobirdsmodern birds
Current avian species
modern · current · contemporary · present
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