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Paleontological sheets : dinosaurs and other prehistoric animals.

247 Fiches Dinosaures et autres animaux préhistoriques
Images et textes tirés de différents sites dont Earth Archives et Monsters of the past

Des fiches sur des animaux disparus incluant image, texte informatif,
l'âge de l'animal et la période (selon l'International Chronostratigraphic Chart - 2016) pendant laquelle il a vécu
et quelques éléments de la classification phylogénétique.
Recherchez une fiche particulière à partir de sa 1ère lettre ci-dessous.
D'autres fiches vont suivre.
Les fiches sont en anglais, désolé.

Fiches commençant par A B C D E F G H I J K L M N O P Q R S T U V W X Z

ou Retour à l'index avec la classification

24 fiches dont le nom commence par la lettre A

Cliquez sur les miniatures pour voir les images en taille réelle, puis cliquez n'importe où pour revenir ici.

PhylumClassOrderFamily
ChordataReptiliaSaurischiaCarcharodontosauridae
AgeGeologic time
115 - 105 Ma | Cretaceous |


Acrocanthosaurus atokensis

PhylumClassOrderFamily
ChordataReptiliaSaurischiaSaltasauridae
AgeGeologic time
70 - 66 Ma | Cretaceous |

Alamosaurus sanjuanensis

It was a titanosaur, a group of dinosaur with towering neck that were among the largest animal ever lived on land. Its body was likely clad in bony spikes and thick armor to protect it from predators.

PhylumClassOrderFamily
ChordataReptiliaPterosauriaAzhdarchidae
AgeGeologic time
95 Ma | Cretaceous |

Alanqa

Alanqa is a genus of pterosaur from the Late Cretaceous Kem Kem Beds (which date to the late Albian or Cenomanian age) of southeastern Morocco.

PhylumClassOrderFamily
ChordataReptiliaSaurischiaAllosauridae
AgeGeologic time
150 - 145 Ma | Jurassic |

Allosaurus

PhylumClassOrderFamily
ChordataReptiliaSaurischiaDiplodocoidae
AgeGeologic time
130 - 125 Ma | Cretaceous |


Amargasaurus cazaui

PhylumClassOrderFamily
ChordataMammaliaArtiodactylaAmbulocetidae
AgeGeologic time
47.8 - 41.3 Ma | Paleogene |


Ambulocetus natans

PhylumClassOrderFamily
ChordataMammaliaCarnivoriaAmphicyonidae
AgeGeologic time
46.2 - 1.8 Ma | Paleogene | Neogene | Quaternary |

Amphicyonidae

Amphicyonids were big carnivorous mammals that inhabited North America, Europe, Asia and Africa for almost 45 million years. They are popularly known as "bear-dogs" because their anatomy resembled a mix of both animals, of which they were relatives.

PhylumClassOrderFamily
ChordataMammalia??
AgeGeologic time
44 - 43 Ma | Paleogene |

Anatoliadelphys maasae

Anatoliadelphys was unlike any of its northern contemporaries, which are tiny, bug-eating critters. For one, it was big-weighting roughly as much as a honeydew melon, Anatoliadelphys was an order of magnitude more massive than any other northern metatherian mammal. It was also carnivorous, armed with burly jaws lined with rugged premolars, allowing for a powerful bite that could have splintered bone or crunched the shells of armored invertebrates. Based on analysis of Anatoliadelphys's skeleton, the cat-sized animal was probably an excellent climber and grasper, and would have been at home in the trees. In life, Anatoliadelphys would have resembled something akin to one of Australia's quolls crossed with a possum. However, instead of the lovely, wet-eyed pile of fluff staring out at you from a Qantas brochure, Anatoliadelphys would have been more like a mini marsupial tree-hyena, hungrily licking its bone-crushing chops while stalking prey in the canopy.

PhylumClassOrderFamily
ChordataMammaliaArtiodactylaTriisodontidae
AgeGeologic time
60 - 32 Ma | Paleogene |

Andrewsarchus mongoliensis

PhylumClassOrderFamily
ChordataReptiliaOrnithischiaAnkylosauridae
AgeGeologic time
68 - 66 Ma | Cretaceous |

Ankylosaurus magniventris

Ankylosaurus is a genus of armored dinosaur. The largest known ankylosaurid, Ankylosaurus measured up to 6.25 m (20.5 feet) in length, 1.7 m (5.6 feet) in height, and weighed 6 tonnes (13,000 lb). It was a quadrupedal animal, with a broad, robust body. It had a wide, low skull, with two horns pointing backwards from the back of the head, and two horns below these that pointed backwards and down. The front part of the jaws were covered in a beak, with rows of small, leaf-shaped teeth further behind it. It was covered in armor plates, or osteoderms, with bony half-rings covering the neck, and had a large club on the end of its tail. Bones in the skull and other parts of the body were fused, increasing their strength, and this feature is the source of the genus name

PhylumClassOrderFamily
ChordataReptiliaPterosauriaAnurognathidae
AgeGeologic time
150.8 - 148.5 Ma | Jurassic |

Anurognathus ammoni

Anurognathus is a small pterosaur known for its short head, massive eyes, and small teeth. Its large eyes suggest that it hunted during the dark in the forests of Jurassic Period Germany.

PhylumClassOrderFamily
ChordataReptiliaSaurischiaDiplodocidae
AgeGeologic time
154 - 144 Ma | Jurassic |

Apatosaurus lousiae

PhylumClassOrderFamily
Arthropoda???
AgeGeologic time
443 - 419 Ma | Silurian |

Aquilonifer spinosus

This 430 million year old fossil animal was an arthropod related to crustaceans and insects. It had a unique way of caring for its young: they were attached to the body of the mother by thin tethers. This method of brood care has given Aquilonifer the nickname the kite runner.

PhylumClassOrderFamily
ChordataMammaliaCarnivoriaOdobenidae
AgeGeologic time
10 - 9.5 Ma | Neogene |

Archaeodobenus akamatsui

About 10 million years ago, a distant cousin of the modern walrus snapped at fish as it swam near the shore of what is now modern Japan, a new study finds. The roughly 10-foot-long (3 meters) creature didn't have tusks as walruses do today, but instead sported "moderate-sized upper canines," that measured 3.4 inches (86.3 millimeters) long, the researchers wrote in the study. It's no surprise this ancient pinniped (a group of fin-footed, semi-aquatic animals that includes seals, sea lions and walruses) didn't have tusks, researchers said. The walrus ancestor, which weighed a whopping 1,042 pounds (473 kilograms), looked more like a sea lion.

PhylumClassOrderFamily
ChordataReptiliaSaurischiaArchaeopterygidae
AgeGeologic time
150 Ma | Jurassic |


Archaeopteryx lithographica

PhylumClassOrderFamily
ChordataMammaliaArtiodactylaEntelodontidae
AgeGeologic time
38 - 24.8 Ma | Paleogene |

Archaeotherium

Archaeotherium is a member of Entelodontidae, popularly known as terminator pigs. Despite its boar-like appearance, this cow-sized predator was more closely related to the hippopotamus and whales.

PhylumClassOrderFamily
ChordataAvesCathartiformesTeratornithidae
AgeGeologic time
7 - 5 Ma | Neogene |

Argentavis magnificens

PhylumClassOrderFamily
ChordataReptiliaSaurischiaAntarctosauridae
AgeGeologic time
112 - 93 Ma | Cretaceous |

Argentinosaurus huinculensis

PhylumClassOrderFamily
ChordataReptiliaIchthyosauriaOphthalmosauridae
AgeGeologic time
| Jurassic |

Arthropterygius

Arthropterygius is an extinct genus of ophthalmosaurid ichthyosaur which existed in Canada and Russia during the late Jurassic period. It contains the type species Arthropterygius chrisorum. Arthropterygius is the generic replacement name for Ophthalmosaurus chrisorum. A. chrisorum has several features that separate it from the genus Ophthalmosaurus, including a highly angled articulation between the radius and ulna and the humerus and a foramen for the internal carotid artery (a major artery that supplies blood to the brain) on the posterior surface of the basisphenoid. Maxwell 2010 found it to be the sister taxon of Caypullisaurus, an ophthalmosaurid from Argentina. However, many recent cladistic analyses found it to be the basalmost member of the Ophthalmosauridae.

PhylumClassOrderFamily
ChordataReptilia?Silesauridae
AgeGeologic time
245 Ma | Triassic |

Asilisaurus

Asilisaurus is an extinct genus of silesaurid archosaur. It is one of the oldest known animals on the dinosaur/pterosaur side of the archosaurian tree, dating to about 245 million years ago. Asilisaurus measured from 1 to 3 metres (3 to 10 ft) long and 0.5 to 1 metre (2 to 3 ft) high at the hip, and weighed 10 to 30 kilograms (20 to 70 lb).

PhylumClassOrderFamily
ChordataReptiliaSauropsida?
AgeGeologic time
240 Ma | Triassic |

Atopodentatus unicus

When it was first described in 2014, this marine reptile was thought to have had a bizarre zipper-like mouth. Two new fossils discovered in 2016, however, proved that the first fossil was badly crushed and its face more closely resembled a handheld vacuum cleaner instead.

PhylumClassOrderFamily
ChordataReptiliaSaurischiaTitanosauridae
AgeGeologic time
83.6 - 66 Ma | Cretaceous |

Austroposeidon magnificus

At about 25 m (85 ft) long, Austroposeidon is among the largest dinosaurs ever found in Brazil. It is named after the Greek god of earthquakes Poseidon, in reference to its sheer size.

PhylumClassOrderFamily
ChordataReptiliaSaurischiaDromaeosauridae
AgeGeologic time
70 Ma | Cretaceous |

Austroraptor

Austroraptor was one of the largest dromaeosaurid dinosaurs to have lived. It was a bipedal carnivore from the Cretaceous of Argentina.

PhylumClassOrderFamily
ChordataReptiliaSaurischiaAvimimidae
AgeGeologic time
70 Ma | Cretaceous |

Avimimus portentosus

Avimimus was a genus of oviraptorosaurian theropod dinosaur, named for its bird-like characteristics, that lived in the late Cretaceous in what is now Mongolia, around 70 million years ago.




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