Pesquisando por: "Bird-like dinosaur, artwork" - Fotoarena - Agência de fotojornalismo

alb3885935 During the late Jurassic period, Europe was a dry, tropical archipelago. In this image Archaeopteryx is depicted near the shore of the Tethys Sea. The Archaeopteryx is the earliest known example of a fully feathered dinosaur. Despite its resemblance to birds, Archaeopteryx has more in common with small dinosaurs, especially in regard to its clawed arms and tiny teeth. The highly evolved feathers may have permitted Archaeopteryx to glide short distances, however, it's unlikely Archaeopteryx could fly like a bird.

alb5579312 Living way back in the time of the dinosaurs their lived a race of highly advanced reptoid beings. It's not certain whether they were extraterrestrials or natives of Earth.

alb5575739 Using their telepathic link to communicate, female reptoid beings ride on the backs of the gigantic Quetzalcoatlus pterosaur.

alb5578142 Artist's concept of the Javelina Formation in Texas. Pictured are Bravoceratops, a few troodons and a small herd of Alamosaurus.. This is a depiction of some of the fauna of the Javelina Formation in western Texas near Big Bend National Park. Age estimates for this formation are 69-66 million years ago. A large ceratopsian, Bravoceratops is being spied upon by T-rex near some trees. A few Troodons come up the water's edge in the lower left and in the background a small herd of Alamosaurus make their way to the river. An Azdarchid flies above. Quetalcoatlus most likely.

alb3877859 A flock of Archaeopteryx bird-like dinosaurs flying above a Jurassic landscape.

alb3886964 Erlikosaurus andrewsi dinosaurs in a prehistoric environment from the Late Cretaceous Period.

alb5565854 Troodon dinosaur head. Troodon was a carnivorous theropod dinosaur that lived in North America during the Cretaceous Period.

alb5565421 Troodon dinosaur standing. Troodon was a carnivorous theropod dinosaur that lived in North America during the Cretaceous Period.

alb5569745 Troodon dinosaur walking. Troodon was a carnivorous theropod dinosaur that lived in North America during the Cretaceous Period.

alb3876515 A six ton, 27 foot long Pentaceratops wonders a Cretaceous forest 75 million years ago in what is today the southwestern United States.. Like the better known Triceratops, Pentaceratops was a Ceratopsid, a large four-legged plant-eating dinosaur characterized by beaks, rows of shearing teeth in the back of the jaw, and elaborate horns and frills. While they resemble defensive shields, the frills are in fact relatively fragile, suggesting that they may have served a purpose other than protecting against a brute force attack. One possibility is that the frills were employed as visual displays in order to intimidate rivals and attract the opposite sex. While no color pigmentation has been preserved in the fossil remains of Ceratopsids, it's not unreasonable to suggest that they may have been very colorful, like many reptiles and birds today.

alb3876458 Muttaburrasaurus langdoni in a prehistoric environment during the Early Cretaceous Period.

alb3883312 A colorful Torosaurus wanders a Cretaceous forest 75 million years ago in what is today southeastern Wyoming.. Like the better known Triceratops, Torosaurus was a ceratopsid, a family of large four-legged plant-eating dinosaurs characterized by beaks, rows of shearing teeth in the back of the jaw, and elaborate horns and frills. While they resemble defensive shields, the frills are in fact relatively fragile, suggesting that they may have served a purpose other than protecting against a brute force attack. One possibility is that the frills were employed as visual displays in order to intimidate rivals and attract the opposite sex. While no color pigmentation has been preserved in the fossil remains of ceratopsids, it's not unreasonable to suggest that they may have been very colorful, like many reptiles and birds today.

alb3888715 A 20 foot long Albertaceratops wanders a Cretaceous forest 77 million years ago in what is today Alberta, Canada. Like the better known Triceratops, Albertaceratops was a Ceratopsid, a large four-legged plant-eating dinosaur characterized by beaks, rows of shearing teeth in the back of the jaw, and elaborate horns and frills. While they resemble defensive shields, the frills are in fact relatively fragile, suggesting that they may have served a purpose other than protecting against a brute force attack. One possibility is that the frills were employed as visual displays in order to intimidate rivals and attract the opposite sex. While no color pigmentation has been preserved in the fossil remains of Ceratopsids, it's not unreasonable to suggest that they may have been very colorful, like many reptiles and birds are today.

alb3883468 Archaeopteryx is a genus of bird-like dinosaurs that is transitional between non-avian dinosaurs and birds. Here is shown its small size compared to a Homo sapiens.

alb3881822 A forest green Rubeosaurus in a prehistoric environment.. It is widely believed that some dinosaurs, especially horned and frilled dinosaurs, had a covering of keratin, hardened skin, over their faces, frills and horns. Keratin is like fingernails and can be like skin or form hard and sharp coverings for horns and claws, like claws and beaks on birds. It is possible some may have been very colorful for display or mating.

alb3888091 An Allosaurus stumbles upon a grazing Stegosaurus in a Jurassic Redwood forest. While it's probable that the 30 foot, 2 ton Allosaurus preyed upon large herbivores, it is doubtful that one would have risked a direct confrontation with an adult Stegosaurus, which could weigh as much as 5 tons and wields a powerful tail tipped with 3-foot spikes. Adding to its survivability, Stegosaurus' front legs may have been strong enough to allow it to pivot and swing its entire backside around to ward off an assault.. In addition to Redwoods and varieties of fern, this Jurassic-period forest includes the now extinct Pachypteris, an arboreal plant that grew to a height of 10 feet and populated every major continent 160 million years ago (in this image, the Stegosaurus is stepping back onto a Pachypteris, obliging a much smaller lizard to abandon its roost).. Was the Allosaurus really striped like Siberian tigers? Fossilized impressions of dinosaur skins reveal combinations of smooth and bony scales, and even feathers for some, but nothing has been preserved that would tell us what colors may have adorned them. Nevertheless, there are plenty of colorful modern reptiles for us to refer to, and birds, which may be the dinosaurs' closest living descendents, are among the most colorful vertebrates of all. Allosaurus reigned for 10 million years, so there was plenty of opportunity for them to evolve a wide variety of coloring schemes, if required.

alb3738892 Antonio Sarzanella de' Manfredi, Este Diplomat [obverse]. Dated: c. 1463. Dimensions: overall (diameter): 7.3 cm (2 7/8 in.). Medium: bronze. Museum: National Gallery of Art, Washington DC. Author: Sperandio.

alb3887170 A flock of Dorygnathus soars high over a rugged, Early Jurassic European landscape of Wollemi Pine approximately 180 million years ago.. Dorygnathus had a wing span of about 3 feet and its large, curved fangs suggests that it dined primarily on fish. Like all pterosaurs, Dorygnathus was a flying reptile, not a dinosaur (the flying descendents of the dinosaurs live on today as birds).

alb3889619 An Archaeopteryx bird-like dinosaur standing at the edge of a forest while the flock flies above.

alb3886267 An Archaeopteryx bird-like dinosaur takes flight from atop a tree stump during the Jurassic Period.

alb3884748 Herd of Caudipteryx displaying bird-like flocking motion.

alb3885732 An Archaeopteryx bird-like dinosaur landing on a rock during the Jurassic Period.

alb3888699 Bambiraptor, a bird-like dromaeosaurid dinosaur from the Late Cretaceous Period.

alb3885721 Troodon dinosaur, white background.

alb3885895 During the age of dinosaurs, there lived a race of reptoid beings who co-existed with the various dinosaur species. They were able to communicate with them using telepathy.

alb3887787 Oviraptor dinosaur, white background.

alb3876589 Northern Argentina about 2 million years ago. When a land bridge formed between North and South America there were species that moved south and north. In the south, the dominant predator had been the giant terror birds. Representing these viscious birds in this image is Phorusrhacos. The large Smilodons of North America, however, wandered into the south and over time became the dominant predator eventually displacing the giant flightless birds. An unusual looking quadroped of the time was Macrauchenia. Looking like a cross between a camel and tapir. They were common among the Pampas plains of that period.

alb3882191 Chilesaurus diegosuarezi is an extinct theropod dinosaur from the Late Jurassic of Chile.

alb3885108 Peacock-sized theropod dinosaurs of the genus Caudipteryx wander a landscape dominated by cycad-like seed plants of the genus Williamsonia 125 million years ago in what is today China.. . Caudipteryx was a maniraptoran with a combination of reptile and bird-like features, including soft downy feathers that covered its body and a broad feathered tail. It could not fly, but was probably a swift runner.

alb3884395 A pair of 40-foot-long Elasmosaurus engage in a swimming courtship dance in a secluded pool 80 million years ago in what is today North America. The gull-like birds are Ichthyornis, the Cretaceous ecological equivalent of modern seabirds such as gulls, petrels, and skimmers.. . At over two tons, Elasmosaurus was an air-breathing carnivorous reptile with flippers for limbs and a relatively small head with sharp teeth. More than half of its length was neck which had more than 70 vertebrae, more than any other animal.