Fossils

The California State Fossil is the Sabre-toothed cat (Smilodon californicus). It was designated as the state fossil in 1973.

Marine fossils form when creatures die and sink to the bottom where there is little oxygen, and are covered with sediment. If sediment continues to accumulate, after many years its weight will crush the deposit, and in combination with well known chemical processes, can cement it into sandstone. Later, if the sea floor it lifted by any of a number of (again, well understood) geological processes, what was once the sea floor can become part of a mountain. Such a mountain can form in a few million years, where fossils have been forming for 3 BILLION years.

False. Trilobites are not related to dolphins, whales, and seals. Trilobites were marine arthropods that lived around 300-500 million years ago, while dolphins, whales, and seals are mammals that evolved much later in the evolutionary timeline.

The Ancient Egyptians were the first to discover and document the importance of the heart in the human body as the center of emotions and intellect, often associated with the soul in their belief system.

Bioimmuration is a process where dead organisms are preserved by being encased in a hard substance, such as calcium carbonate or silica, by other living organisms. This leads to the formation of fossil-like structures that retain the shape and details of the original organism. It is a common phenomenon in marine environments where organisms utilize shells or skeletons of dead organisms to create a protective structure.

Dinosaur bones are made of hard, durable material like calcium phosphate, which is more resistant to decay than the soft tissue of jellyfish. Jellyfish are composed mainly of water and soft tissues that decompose quickly, making it harder for them to fossilize. The conditions needed for fossilization, such as rapid burial and protection from scavengers, are more likely to occur for hard, mineralized bones than soft-bodied organisms like jellyfish.

A trilobite is an extinct marine arthropod that existed over 250 million years ago. They had a hard exoskeleton with distinct segmented bodies, often found fossilized in marine sediments. Trilobites were diverse in size and shape, with some species being quite small while others grew to over two feet in length.

Index fossils help geologists determine the relative age of rock layers by comparing the fossils found in them to known ages of fossils. By identifying specific index fossils, geologists can correlate rock layers from different locations and help determine the chronological order of events in Earth's history.

Petrified fossils are formed when minerals replace the organic material of a decaying organism, creating a stone replica of the original organism. This process preserves the structural details of the organism, often allowing scientists to study its anatomy in great detail.

* A mold fossil is a fossil that is molded onto a rock or mud and other stuff like that considering that the object turns into a mold or fossil it has tofossilize into something wet the drys up into something hard. * A mold fossil could take up to a year to a month to dry up into a mold fossil so will its drying up or already dry it's laying in the ground or water waiting to be discovered you can tell how old a fossil is by looking at the layers so next time you find a mold fossil or any type of fossil look at the layers it has and you will no how old it is or how long its been siting there and that's what a mold fossil is so now you have your answer on what a mold fossil is.

Earth's layers were formed through a process called differentiation during its early formation. Dense materials such as iron and nickel sank to the core, forming the inner core and outer core. Lighter materials rose to the surface, forming the crust and mantle. This process created distinct layers with varying composition and physical properties.

Fossils found in different places can have similarities, such as similar species or types of organisms, which can provide insights into past ecosystems and evolutionary relationships. However, the specific types of fossils and diversity of species can vary depending on the geological history and environmental conditions of each location.

It's a fossil that existed only in a specific geological time and thus can date the depositional layer in wich it is. The expression is also used in Archaeology for artifacts that existed only in a determined age and can indicate de (cultural) chronology of the site/layer.

Yes, a worm can be fossilized, but it is extremely rare, because it has no skeleton to be mineralized over time. So the only way you could find a fosssil of a worm is in a sandstone, because there it could have chances to be preserved.

Ed Conrad is a layman who in the early 1980s discovered some rocks in a coal field which he believes are human skulls which date back 280 million years or so, 200 million years before modern science claims that man evolved. These rocks have been examined by scientists, including those at the Smithsonian Institute, who have reported that the rocks are just rocks and not of human origin, but Conrad persists in believing there is a mass conspiracy among anthropologists and paleontologists to keep it secret as to when man actually first appeared on Earth. He posts regularly in several Usenet news groups devoted to the origins of man, frequently changing his username to get around the filters that people set to avoid his posts.

I'm not sure of what fossils were found in Antarctica from all time periods, but I do know that there were a variety of plants and animals there during the Mesozoic. Some of the animals that I will list were found in Australia, which, at this time, was connected to Antarctica and had the same kinds of fauna and flora, as well as climate. Fossils of dinosaurs like Antarctopelta (an ankylosaur), Antarctosaurus (a sauropod), Cryolophosaurus (a theropod), and Leallynasaura (a small, herbivorous, bipedal dinosaur). There were amphibians, including the 16 foot long Koolasuchus, that filled a niche similar to modern crocodillians. In the shallow seas and/or rivers there were also plesiosaurs.

The plants were adapted for a cool climate with cold winters, and included conifers and ferns, as well as mosses and lichens.

i guess they show tht whales were here millions of years ago and they show how they changed over time, when the whales changed or evovled, the fossils changed

they show that whales' ancestors were four legged mammals. modern whales inherited hip bones from their four legged ancestors.

Owl pellets are pieces of fur, bones, teeth, and any other indigestible parts that the owl is unable to digest, which are then regurgitated. Droppings are what is digested while pellets are what cannot be digested, so they are not the same thing.

No. Marine fossils are formed when marine creatures die and their bodies fall to the bottom of the sea, where they become covered in silt which eventually hardens into rock. If there ever was a great flood that could cover high mountains, any marine creatures that died would still fall to the bottom of the sea - not up to a mountain top. Nor would they form a scientifically correct geologically column on the mountain, with older species at the bottom of the column and more modern species at the top of the column.

The presence of marine fossils on a mountain top merely shows that the mountain is of recent origin, having been uplifted by geological forces perhaps only a few million years ago. Prior to the uplift, the mountain formed part of the sea bed.

Further, such a flood would not create fossils. Fossils most often form at the bottom of bodies of water were there is little oxygen and where they are repeatedly silted over and protected from mechanical damage. If a flood reached into the mountains, it certainly would not leave deep sediments there, so any marine creatures left behind would be eaten and scattered to the winds. And such fossils are found in SEDIMENTARY rock, usually formed when layers of silt are laid down again and again over many years until they are crushed into rock by the pressure. A biblical flood could not create such rock. At best, it might leave a few pools of mud that might hold a few skeletons--but again, these would not become entombed in sandstone, nor fossilized.

Dinosaur fossils have been found throughout human history, but they have never been called dinosaurs or fossils. People thought they were the bones of dragons.

The true investigation of dinosaurs began around 1840 when a woman found a large tooth in the ground. It was the tooth of an Iguanodon ("iguana tooth")

Tracks and burrows can end up in the rock and fossil record through a process called fossilization, where sediment fills in the impressions left by the tracks or burrows and hardens into rock over time. This process preserves the shape and structure of the tracks or burrows, allowing scientists to study them and learn more about ancient life and environments.

Yes, it is possible to find dinosaur fossils in rocks that are 250 million years old because dinosaurs lived during the Mesozoic Era, which began around 252 million years ago. Fossils of early dinosaurs or their relatives could potentially be found in rocks from this time period.

Some of the fossils found in the Philippines include the remains of the Homo luzonensis, a newly discovered human species, as well as fossils of prehistoric animals like Stegodon, a type of elephant, and various species of prehistoric rhinoceros, crocodiles, and turtles. The Philippines is also known for its rich marine fossil record, including ancient shark teeth and marine reptile fossils.