Bird tracks in snow are not fossils, because snow melts and gets covered up by more snow, and so the bird that made them is probably still alive. (If it died shortly after and the tracks were still there, then they might be considered a trace fossil. ;))
A mold or cast fossil is an example of a fossil that is not an organism. These fossils are formed when an organism's remains decay and leave behind an impression in sediment, creating a negative mold, or when minerals fill in the mold to create a positive cast.
Transitional fossils are important because they are visual evidence of one type of animal evolving into another type of animal. A transitional fossil always contains features of one type and features of another. For example, Archaeopteryx is a transitional fossil that is a cross between a dinosaur and a bird. It has a bony tail, teeth, and claws like a dinosaur, but it has feathers and is able to fly like a bird. It is an important link in the evolution from dinosaurs to birds.
a grey one
A fossil is evidence of an organisms existence, not a type of rock. Most fossils are found in sedimentary rocks.
molds or casts
Bird tracks in snow isn't any kind of fossil. It isn't a fossil at all.
well a grouse is a type of bird so snow grouse is a snow bird the look the pheasants but they are white
Evidence of an organism's activities is recorded in trace fossils. These include tracks, fossilized dung, and burrow casts.
Evidence of an organism's activities is recorded in trace fossils. These include tracks, fossilized dung, and burrow casts.
Evidence of an organism's activities is recorded in trace fossils. These include tracks, fossilized dung, and burrow casts.
Tennessee doesn't have a state dinosaur, but its state fossil is Pterotrigonia thoracica, a type of bivalve. If you count birds as a subgroup of dinosaurs, then the state bird is a state dinosaur, and Tennessee's state bird is the bobwhite quail.
The shape and size of the animal tracks are one clue. The space between tracks is another. Generally, larger animals have larger feet, but some, such as mountain goats, have quite small feet for their size. The number of toes is also a key determinant of animal type.
a full body fossil
A mold or cast fossil is an example of a fossil that is not an organism. These fossils are formed when an organism's remains decay and leave behind an impression in sediment, creating a negative mold, or when minerals fill in the mold to create a positive cast.
Kansas has no state fossil or state dinosaur. However, birds are a type of dinosaur, and Kansas's state bird is the Western Meadowlark.
Yes, petroleum is a type of fossil fuel.
Transitional fossils are important because they are visual evidence of one type of animal evolving into another type of animal. A transitional fossil always contains features of one type and features of another. For example, Archaeopteryx is a transitional fossil that is a cross between a dinosaur and a bird. It has a bony tail, teeth, and claws like a dinosaur, but it has feathers and is able to fly like a bird. It is an important link in the evolution from dinosaurs to birds.