John, a budding archeologist, got an instruction from his boss to identify a fossil reported by a team at an excavation site, which is exactly like Archaeopteryx. He has a list of characters which can help in deciding whether the characters are of aves, reptiles or both. Select the option which shows the incorrect combination of characters.
John, a budding archeologist, got an instruction from his boss to identify a fossil reported by a team at an excavation site, which is exactly like Archaeopteryx. He has a list of characters which can help in deciding whether the characters are of aves, reptiles or both. Select the option which shows the incorrect combination of characters.
The correct option is C
Avian Character
Reptilian Character
Hind limbs are modified into wings
Presence of strong sternum bones
Archaeopteryx lithographica was discovered in 1861 by Andreas Wagner from Bavaria, in Germany. Fossil obtained was in the form of an impression on a sedimentary rock.
This fossil is placed in the British Museum, London.
Archaeopteryx is a connecting link between birds and reptiles which means they had characteristics of both birds and reptiles. In Archaeopteryx, the forelimbs got modified into wings, not the hind limbs. Reptiles have weak sternum bone which is their distinct feature. Hence option c is incorrect.
Archaeopteryx have certain avian characters like :
-
Presence of feather on the body.
-
Jaws modified into beaks.
-
Forelimbs modified into wings.
-
An intimate fusion of the skull bones as seen in birds.
Archaeopteryx also have certain Reptilian characters like :
-
Bones are not pneumatic.
-
Jaws are provided with teeth.
-
Presence of a weak sternum.
-
Presence of free caudal vertebrae as found in lizards.
Figure : Archaeopteryx
| Avian Character | Reptilian Character |
| Hind limbs are modified into wings | Presence of strong sternum bones |
Archaeopteryx lithographica was discovered in 1861 by Andreas Wagner from Bavaria, in Germany. Fossil obtained was in the form of an impression on a sedimentary rock.
This fossil is placed in the British Museum, London.
Archaeopteryx is a connecting link between birds and reptiles which means they had characteristics of both birds and reptiles. In Archaeopteryx, the forelimbs got modified into wings, not the hind limbs. Reptiles have weak sternum bone which is their distinct feature. Hence option c is incorrect.
Archaeopteryx have certain avian characters like :
-
Presence of feather on the body.
-
Jaws modified into beaks.
-
Forelimbs modified into wings.
-
An intimate fusion of the skull bones as seen in birds.
Archaeopteryx also have certain Reptilian characters like :
-
Bones are not pneumatic.
-
Jaws are provided with teeth.
-
Presence of a weak sternum.
-
Presence of free caudal vertebrae as found in lizards.
Figure : Archaeopteryx
