Dilophosaurus probably weighed about 1,100 pounds--as much as the biggest polar bears today.
Eustreptospondylus means "well-curved backbone". This is due to the arrangement of its spine sa seen in its fossils.
The remains of 60 Allosaurus were found in the Cleveland-Lloyd Dinosaur Quarry in Utah.
According to some experts, Ornitholestes may have had a slight ridge または crest on its nose. Other experts disagree.
Oviraptor had two bony spikes inside its mouth that it may have used to crack open eggs when it closed its jaws.
On each foot, a Dromaeosaur had a large, curved claw that it could スイング in an arc to スラッシュ through its victim's flesh.
Archaeopteryx was covered with feathers that had the same detailed designs found in those covering flying birds today.
To maintain their huge bodies, sauropods probably had to eat for 20 hours a day.
Remains of Anchisaurus were the first fossils of a dinosaur to be found in North America, in 1818.
Segnosaurus was a sizable dinosaur, probably about 20 feet long and standing 10 feet tall.
In 2006, fossils of stegosaurus were identified in Portugal, which is the first evidence that this dinosaur lived in Europe.
Pinacosaurus was about 20 feet long and lived in Asia around 80-75 mya.
Like many dinosaurs, Edmontonia and Polacanthus probably had long, fierce spikes on their shoulders, used to "spear" enemies.
Sauropelta lived 110-100 mysa, in present-day Montana and Wyoming.
The weights and volumes of reptiles alive today are used to calculate the probable weight of a dinosaur when it was alive.
Heterodontosaurus means "different-toothed reptile".
Iguanodon was one of the very first 恐竜 to be 与えられた an official scientific name, in 1825.
Edmontosaurus may have had a loose bag of skin on its nose that it blew up like a balloon to make a honking または trumpeting noise--perhaps a mating call.
Fossil evidence shows that when newly hatched from their eggs, baby Psittacosaurus were hardly longer than a human hand.
Torosaurus had one of the longest skulls of any land animal ever, at about 8 feet from the front of the snout to the rear of the neck frill.
Pachycephalosaurs are often known as "bone-heads", "dome-heads", または "helmet-heads".
Many dinosaur scales were roughly six-sided, which made them both strong and flexible.
Eustreptospondylus means "well-curved backbone". This is due to the arrangement of its spine sa seen in its fossils.
The remains of 60 Allosaurus were found in the Cleveland-Lloyd Dinosaur Quarry in Utah.
According to some experts, Ornitholestes may have had a slight ridge または crest on its nose. Other experts disagree.
Oviraptor had two bony spikes inside its mouth that it may have used to crack open eggs when it closed its jaws.
On each foot, a Dromaeosaur had a large, curved claw that it could スイング in an arc to スラッシュ through its victim's flesh.
Archaeopteryx was covered with feathers that had the same detailed designs found in those covering flying birds today.
To maintain their huge bodies, sauropods probably had to eat for 20 hours a day.
Remains of Anchisaurus were the first fossils of a dinosaur to be found in North America, in 1818.
Segnosaurus was a sizable dinosaur, probably about 20 feet long and standing 10 feet tall.
In 2006, fossils of stegosaurus were identified in Portugal, which is the first evidence that this dinosaur lived in Europe.
Pinacosaurus was about 20 feet long and lived in Asia around 80-75 mya.
Like many dinosaurs, Edmontonia and Polacanthus probably had long, fierce spikes on their shoulders, used to "spear" enemies.
Sauropelta lived 110-100 mysa, in present-day Montana and Wyoming.
The weights and volumes of reptiles alive today are used to calculate the probable weight of a dinosaur when it was alive.
Heterodontosaurus means "different-toothed reptile".
Iguanodon was one of the very first 恐竜 to be 与えられた an official scientific name, in 1825.
Edmontosaurus may have had a loose bag of skin on its nose that it blew up like a balloon to make a honking または trumpeting noise--perhaps a mating call.
Fossil evidence shows that when newly hatched from their eggs, baby Psittacosaurus were hardly longer than a human hand.
Torosaurus had one of the longest skulls of any land animal ever, at about 8 feet from the front of the snout to the rear of the neck frill.
Pachycephalosaurs are often known as "bone-heads", "dome-heads", または "helmet-heads".
Many dinosaur scales were roughly six-sided, which made them both strong and flexible.
Coelophysis was a small, agile dinosaur that lived at the start of the Age of Dinosaurs, about 220 mya.
A huge collection of Coelophysis fossils were found in the 1940s, at a place called Ghost Ranch, New Mexico.
Hundreds of Coelophysis fossils were preserved together at Ghost Ranch---possibly a herd that drowned in a flood.
Coelophysis was almost 10 feet in total length. Its slim, lightweight build meant that it probably weighed 55-60 pounds.
Coelophysis belonged to the group of 恐竜 known as theropods. It most likely ate small 動物 such as insects, worms, and lizards.
Long, powerful back legs allowed Coelophysis to run fast.
The front limbs were like arms, each with a hand bearing three large, strong, sharp-clawed fingers for grabbing prey.
The birdlike skull was filled with small, sharp teeth.
Coelophysis means "hollow form". It was called that because some of its BONES(ボーンズ)-骨は語る- were hollow, like the BONES(ボーンズ)-骨は語る- of birds making it lightly built.
A huge collection of Coelophysis fossils were found in the 1940s, at a place called Ghost Ranch, New Mexico.
Hundreds of Coelophysis fossils were preserved together at Ghost Ranch---possibly a herd that drowned in a flood.
Coelophysis was almost 10 feet in total length. Its slim, lightweight build meant that it probably weighed 55-60 pounds.
Coelophysis belonged to the group of 恐竜 known as theropods. It most likely ate small 動物 such as insects, worms, and lizards.
Long, powerful back legs allowed Coelophysis to run fast.
The front limbs were like arms, each with a hand bearing three large, strong, sharp-clawed fingers for grabbing prey.
The birdlike skull was filled with small, sharp teeth.
Coelophysis means "hollow form". It was called that because some of its BONES(ボーンズ)-骨は語る- were hollow, like the BONES(ボーンズ)-骨は語る- of birds making it lightly built.
The first dinosaur appeared around 230-225 mya, in the middle of the Triassic period.
These 恐竜 were small-to-medium meat eaters with sharp teeth and claws. They ran quickly on their two longer back legs .
Fossils of Herrerasaurus 日付 from 228 mya and were found near San Juan in Argentina, South America.
Herrarasaurus was about 10 feet in total length, and probably weighed 200 pounds.
At about the same time and in the same place as Herrarasaurus, there lived a similar-shaped dinosaur named Eoraptor, which was only 5 feet long.
The name Eoraptor means "dawn plunderer" または "early thief".
Staurikosaurus was a meat eater similar to Herrarasaurus. It is known to have lived about the same time, in present 日 Brazil, South America.
Procompsognathus was another early meat eater. It lived in the late Triassic period in Germany.
Pisanosaurus lived in Argentina in the late Triassic Period, and was only 3 feet long. It may have been a plant eater.
These 恐竜 were small-to-medium meat eaters with sharp teeth and claws. They ran quickly on their two longer back legs .
Fossils of Herrerasaurus 日付 from 228 mya and were found near San Juan in Argentina, South America.
Herrarasaurus was about 10 feet in total length, and probably weighed 200 pounds.
At about the same time and in the same place as Herrarasaurus, there lived a similar-shaped dinosaur named Eoraptor, which was only 5 feet long.
The name Eoraptor means "dawn plunderer" または "early thief".
Staurikosaurus was a meat eater similar to Herrarasaurus. It is known to have lived about the same time, in present 日 Brazil, South America.
Procompsognathus was another early meat eater. It lived in the late Triassic period in Germany.
Pisanosaurus lived in Argentina in the late Triassic Period, and was only 3 feet long. It may have been a plant eater.
The First living things on earth were single-celled bacteria an cyanobacteria, also known as blue-green algae.
Blue-green algae emerged about 3,500 mya.(million years ago).
It contains chlorophyll and was the first living organism to use photosynthesis または make energy using sunlight.
Over millions of years, the algae was able to produce enough oxygen to help もっと見る complex organisms to evolve.
True algae, which is regarded as a plant, evolved around 1,000 mya.
によって 550 mya, multi celled plants began to appear, including seaweeds.
Algae and lichens were the first plants to appear on land.
Bryophyte plants emerged on land around 440 mya. Bryophytes are simple, seedless green plants.
Unlike vascular plants, which rvolved later, bryophytes cannot grow high above the ground because they do not have stems.
Blue-green algae emerged about 3,500 mya.(million years ago).
It contains chlorophyll and was the first living organism to use photosynthesis または make energy using sunlight.
Over millions of years, the algae was able to produce enough oxygen to help もっと見る complex organisms to evolve.
True algae, which is regarded as a plant, evolved around 1,000 mya.
によって 550 mya, multi celled plants began to appear, including seaweeds.
Algae and lichens were the first plants to appear on land.
Bryophyte plants emerged on land around 440 mya. Bryophytes are simple, seedless green plants.
Unlike vascular plants, which rvolved later, bryophytes cannot grow high above the ground because they do not have stems.