ornithischian
The bone which is part of the hip or waistline in humans is the ilium. The bone that comprises the lower lobe of the pelvis is the ischeum.
homologous
They are similar in origin but may differ from structure.
Whales are actually very close to birds. You see, birds and whales both have structures called homologous structures (H). H-structures are mainly bone structures in an animal that are very similar to other creatures. If you look at the bones and their structure in the whales fins and flippers you will see that they are nearly identical to that of a birds wing.
Oxytocin is very similar to vasopressin.
Yes
Theropod dinosaurs for one.
Ornithischians with a hip structure similar to that of present day birds.
how are parts of birds & fish similar in structure & function
how are parts of birds & fish similar in structure & function
vestigial organs such as a tail bone in humans and a hip bone in whales. also, the skeletal structure of wings of birds, flippers of whales, and hands of humans are all very very similar in structure.
how are parts of birds & fish similar in structure & function
A structure with similar shape but a different use
because some dinosaurs like the velociraptor have been discovered with feathers. and even some dinosaurs in there bone structure have the shape of birds. like the t-rex has the hip structure of a lizard and the velociraptor had the hip structure of a modern day bird
Dinosaurs were divided into two big groups: ornistichia (bird hip) and saurischia (lizard hip). The confussing part is that scientists believe that birds evolved from a group of therapods similar to small velociraptors and therapods are saurischia.
No, birds didn't evolve from lizards, but they did evolve from dinosaurs, a different group of reptiles. Dinosaurs are different from lizards especially because of their hip structure. Birds descended from a group of dinosaurs known as theropods (bipedal carnivores)
Birds are so called. The skeletal structure of most birds is very similar (although smaller) to that of many dinosaurs.