ornithischian
You can say that they provide the same function for the organism, but their origin i different. For example, bats, birds and dragonflies all have wings, but bone placement isn't present in dragonflies as it is in birds and bats. They all let them fly, but they evolved into that form in different ways. It's two structures (or more) that perform the same function but evolved separately.
Structure and identical are not similar. Structure refers to the way something is organized or built, while identical means exactly the same.
Homologous structures are features with a similar anatomical origin but have different functions, indicating common ancestry, such as the limbs of vertebrates. Analogous structures have similar functions but different anatomical origins, suggesting they evolved independently due to similar environmental pressures, like the wings of birds and insects.
They are similar in origin but may differ from structure.
The acetabulum is a concave surface of the pelvis. The head of the femur meets with the pelvis at the acetabulum, forming the hip joint
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
The pentadactyl limb structure, found in mammals, birds, reptiles, and amphibians, is inherited from a common ancestor. Despite modifications for different functions, such as wings in birds and flippers in whales, the underlying bone structure remains similar.
A structure with similar shape but a different use
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.
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
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)