mosasaur
Extinct ocean lizard
A mosasaur was a large marine reptile that dominated the oceans during the late Cretaceous period, roughly 100 to 66 million years ago.
These predators had elongated bodies, powerful tails, and paddle-like limbs adapted for swimming.
They ranged from modest sizes to giants over 50 feet long.
Mosasaurs went extinct alongside the dinosaurs.
Massive saltwater body
- predatorOrganism that consumes others
- aquaticWater-inhabiting
- apexUppermost point or culmination
- swimmingLocomotion through water
diving · saltwater · underwater · shark · plesiosaur · ichthyosaur · fish · squid
Foot-worn swim aids
- streamlinedMade smooth and efficient
- elongatedStretched beyond usual dimensions
- jawsMouth's bony framework
- dorsalOf the back
vertebrae · skull · propulsion · hydrodynamic · serpentine · bilateral
Study of ancient organisms
- excavationAct of unearthing
- specimenIndividual for examination
- skeletonInternal supportive framework
- vertebraeInterlocking bones of spine
skull · jaw · teeth · sediment · chalk · limestone · Maastricht · articulated
Scale-bearing reptile order
- lizardFour-legged scaled reptile
- snakeLimbless scaled reptile
- herpetologyStudy of reptiles, amphibians
- ectothermicTemperature set by surroundings
scaly · tetrapod · reptilian · evolutionary · convergent · live-bearing · air-breathing · lungs
Age of Reptiles
- ammonitesExtinct coiled-shell cephalopods
- plesiosaursPrehistoric marine reptiles
- ichthyosaursExtinct marine reptiles
- pterosaursExtinct flying reptiles
ocean
Massive saltwater body
swimming · diving · saltwater · underwater · shark · plesiosaur · ichthyosaur · fish · squid · ammonite
flippers
Foot-worn swim aids
- streamlinedMade smooth and efficient
- elongatedStretched beyond usual dimensions
- jawsMouth's bony framework
dorsal · vertebrae · skull · propulsion · hydrodynamic · serpentine · bilateral
paleontology
Study of ancient organisms
- excavationAct of unearthing
- specimenIndividual for examination
- skeletonInternal supportive framework
vertebrae · skull · jaw · teeth · sediment · chalk · limestone · Maastricht · articulated · reconstruction
squamate
Scale-bearing reptile order
- lizardFour-legged scaled reptile
- snakeLimbless scaled reptile
- herpetologyStudy of reptiles, amphibians
ectothermic · scaly · tetrapod · reptilian · evolutionary · convergent · live-bearing · air-breathing · lungs
Mesozoic
Age of Reptiles
- ammonitesExtinct coiled-shell cephalopods
- plesiosaursPrehistoric marine reptiles
- ichthyosaursExtinct marine reptiles
- Extinct Animalsdinosaurs, tyrannosaurus, dodo, mammoth, triceratops
- extinct creaturesdinosaurs, trilobites, ammonites, mammoths, pterosaurs
- fossilsammonite, amber, ammonites, fossils, fossil
- Prehistoric Animalsdinosaurs, T-Rex, Velociraptor, Brachiosaurus, mammoth
- prehistoric lifedinosaurs, triceratops, Velociraptor, velociraptor, stegosaurus
- Prehistoric ReptilesT-Rex, Velociraptor, Brachiosaurus, Spinosaurus, pterosaur
mosasaurdinosaur
Extinct Mesozoic reptile
theropod · sauropod · Tyrannosaurus rex · archosaur · pterosaur
mosasaursea turtle
Ocean-dwelling shelled reptile
saltwater crocodile · marine iguana · orca · great white shark · killer whale