0
What else can I help you with?
Why are fewer bird fossils found in the fossil record than those of reptiles and mammals?
Bird skeletons are lightweight and delicate, making them less likely to fossilize. Additionally, birds tend to live in habitats that are not conducive to fossil preservation, such as forests or open water. Reptiles and mammals, on the other hand, often live in environments more suitable for fossilization, such as deserts or savannahs.
What did Birds evolved from?
Birds are believed to have evolved from theropod dinosaurs during the Mesozoic era. The fossil record shows a gradual transition from small, feathered dinosaurs to early bird species, which eventually led to the wide diversity of bird species we see today.
How many transitional forms does a fossil record contain?
"Transitional form" is an arbitrary term because every organism, whether living or fossil, is a link in the chain between an ancestral organism and a descendent. The break into new species is gradual rather than sudden. Every fossil is therefore a "transitional form" in the strict sense.In general, "transitional form" is used specifically to link one modern species with its prehistoric ancestor. In some cases, a form may not be a specific ancestor of an identifiable living species, but it may have general characteristics that indicate the evolutionary path that was being followed. E.g. the bird fossil Confuciusornis may not be ancestral to living birds, but it still indicates the direction of evolution from earlier repties.There are abundant transitional forms that illustrate e.g. the transition from fish to land animals; the transition from amphibians to reptiles; the transition from dinosaurs to birds; and the transition from early apes to humans.Because the definition of "transitional form" in the narrow sense (a transition between two set organisms) is variable, it's not possible to give a strict number.
Did dinosaurs morph into early birds?
In all likelihood, yes. Their are mountains of evidence pointing to birds having a dinosaur ancestor.
Why would a dinosaur with feathers be a bad index fossil?
Dinosaurs with feathers have been found through a relatively wide range of geologic time. Not counting birds feathered dinosaurs can be found from the Jurassic period to the end of the Cretaceous period.
What has the author Hildegarde Howard written?
Hildegarde Howard has written: 'Fossil birds; with especial reference to the birds of Rancho La Brea' -- subject(s): Paleontology, Birds, Fossil, Fossil Birds 'Postcranial elements of the extinct condor Breagyps clarki (Miller)' -- subject(s): Paleontology, Breagyps clarki 'Fossil birds' -- subject(s): Birds, Fossil, Paleontology, Fossil Birds 'Fossil birds from the Anza-Borrego desert' -- subject(s): Paleontology, Birds, Fossil, Fossil Birds 'Pliocene birds from Chihuahua, Mexico'
Why are birds poorly represented in the fossil record?
In order for birds to fly they need light and often hallow bones. Because of this they can easily be broken and do not easily form fossils.
What has the author Tommy Tyrberg written?
Tommy Tyrberg has written: 'Pleistocene birds of the Palearctic' -- subject(s): Birds, Fossil, Fossil Birds, Paleontology
What group of vertebrates is the only one with feathers?
While the birds are the only currently living animals (specifically vertebrates) with feathers, the fossil record clearly shows that some species of the reptiles (specifically the dinosaurs) had feathers (and these are the ancestors of the birds).
Why were the dinosaurs thought to go extinct?
They were thought to have gone extinction because they disappeared from the fossil record around 65 million years ago. It is now known that birds are the only dinosaurs to have survived.
Are there any fossil birds that retain more reptilian features than birds that are now living?
yes there are.
What is the specific fossil name linking reptiles and birds?
ARCHEOPTERIX
What has the author Robert M Chandler written?
Robert M. Chandler has written: 'The wing of Titanis walleri (Aves:Phorusrhacidae) from the late Blancan of Florida' -- subject(s): Birds, Fossil, Fossil Birds, Paleontology
What did fossil fule animals look like?
They looked like fish and birds.
When you compare the dinosaur fossil to modern day vertebrates what does it most resemble?
Dinosaurs most resemble birds and reptiles but mainly birds because birds evolved from dinosaurs.
How did birds evolve from reptiles?
But they did. Specifically, birds evolved from a subgroup of dinosaurs (which were reptiles) known as theropods. There is a lot of fossil and anatomical evidence for this.
What fossil evidence is considered an intermediate between reptiles and birds?
The oldest bird fossil Archaeopteryx is a transitional form between reptiles and birds and is cited as evidence Describe three additional pieces of evidence for this claim?
