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 Eras of Life
 Dinosaur Evolution
 Feathered Dinosaurs

Species

 Compsognathidae

MYA
   Compsognathus

150

   Sinosauropteryx

130

 Therizinosauroidea
   Beipiaosaurus

130

   Falcarius

125

   Alxasaurus

112

   Erlikosaurus

95

   Therizinosaurus

75

 Oviraptoridae
   Caudipteryx

140

   Insicivosaurus

120

   Avimimus

95

   Chirostenotes

70

   Rinchenia

70

   Nomingia

68

   Oviraptor

67

 Dromaeosauridae
   Microraptor

126

   Deinonychus

120

   Buitreraptor

90

   Unenlagia

90

   Bambiraptor

80

   Atrociraptor

70

   Dromaeosaurus

70

   Velociraptor

67

 Tyrannosauridae
   Dilong

130

 Troodontidae
   Mei long

130

   Sinornithoides

105

   Troodon

 67

 Alvarezsauridae
  Patagonykus 95
  Shuvuuia 80
  Alvarezsaurus 80
  Parvicursor 80
  Mononykus 70
 Aves (birds)
   Protarchaeopteryx

135

   Archaeopteryx

147

  Recent Discoveries
  Juraventor Starki

Information

 Tyrannosaurs
 Weird Dinosaurs
 Prehistoric Sea Monsters
 Pterosaurs
 Sauropods

 

 

Families and Species
  The dinosaur families shown on this page are known to contain species that had feathers.  Since very close relatives had them, most scientists believe that all members of the family had them, even though it cannot yet proven by fossilized evidence.  Since feathers are extremely fragile, they very, very rarely fossilize, so such evidence may never be found.
Compsognathidae - First appeared: 155 MYA
   The Compsognathidae is a group of small, lightly-built coelurosaurs with relatively long legs and arms with three-fingered hands. The genera contains only two members.  Compsognathus was for many years the smallest known dinosaur.
Therizinosauroidea - First appeared: 125 MYA
   Therizinosaurs are the strangest dinosaurs ever discovered. These are incredibly weird animals that baffled paleontologists for many years.  They are characterized by massive claws.  Over millions of years they evolved from fast carnivores into relatively laid-back herbivores.
Oviraptoridae - First appeared: 140 MYA
   The toothless dinosaurs are distinguished by a massive beak and the highly specific in configuration and structure of the lower jaw with the characteristic articular joint.
   The name means "egg robber," because that is what they were first thought to be.  It is known that they protected their eggs.
Dromaeosauridae - First appeared: 125 MYA
   The dromaeosaurs were the most birdlike of all dinosaurs.  Of special interest is their forelimbs, which permitted highly flexible seizing, great for grabbing prey.  It was this ability which may have made possible the "flight stroke."
Troodontidae - First appeared: 110 MYA
    The troodontids are best characterized as small, rather delicate theropods with relatively the largest brains of any classic dinosaur, long and slender legs, and unusual teeth.  The fossil record is very sparse, so little is known of these interesting animals.
Alvarezsauridae - First Appeared 95 MYA
   These animals have characteristics both both birds and dinosaurs.  They are characterized a large single claw finger on the forelimbs. All other theropods have three. They were first classified as dinosaurs, then as flightless birds. Current thinking is that are dinosaurs.  

 

Aves (birds)  - First appeared: 150 MYA
   Birds are bipedal, warm-blooded, egg-laying vertebrates traditionally characterized by the presence of feathers.  Their forelimbs are wings.  They have hollow bones.
  Surprisingly, the first bird lived many millions of years before many of the feathered dinosaurs.  This it it did not evolve from them, but rather evolved simultaneously with them. 
   
   
   
 
 
   
 
    
 

 

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