0
The earliest vertebrate fossils found in aquatic environments date back to the Cambrian period, approximately 500 million years ago. Notable examples include the jawless fish known as Agnatha, with one of the oldest genera being Myllokunmingia. These early vertebrates exhibited primitive features and laid the groundwork for the evolution of more complex fish and terrestrial vertebrates. Fossils from this era provide crucial insights into the transition from invertebrates to early vertebrates in the evolutionary timeline.
What else can I help you with?
What type of water are fossils mostly found in?
Fossils are not found in water, but rather in the sediment deposits which includes the bottom of a body of water. Fossils are especially prevalent in shallow marine environments where they may become well preserved.
How do fossils show that rock at the top of mountains was once under water?
Fossils found in rock at the top of mountains indicate that the rock was once at the bottom of a body of water because the fossils are typically of marine organisms that lived in water. The presence of marine fossils in mountain rock suggests that the rock was uplifted from below sea level to its current position at the mountain top over millions of years.
Can fossils be used as index fossils?
Yes, index fossils are special fossils that act as geological tools enabling comparison in time of a range of geological units and environment. Normally, they are selected using certain attributes such as the fossil should be widespread, abundant, fast evolving, and independent of their environment.
How can water erosion uncover fossils?
The rain water washes away the dirt that is covering the fossil.
Can petrified fossils form when the minerals in water make a copy of the organism?
Yes, petrified fossils can form when the organic material of an organism is replaced by minerals from water over time. This process is called permineralization, where minerals fill in the pores and cavities of the organism's remains, creating a detailed replica of the original structure.
Are ammonites water-dwelling creatures?
Ammonites WERE water-dwelling creatures. They've been extinct for a couple of hundred million years
What are the earliest fossils and what do they indicate about the envronment in which they lived?
They provide evidence for animals that existed before and do not now. It shows proof of the different evolution. It also gives us comparisons of organisms we have today and where they possibly came from.
How does the environment affect the formation of fossils?
the environment can rain a lot and fossils can not become fossils when theres a lot of water around
Where are mold fossils located?
mold fossils are either located near water or cliffs.
Water-dwelling mollusks have in the mantle cavity?
Gills:)! YOURWELCOME!
What was the earliest form of multicelluar life on earth?
All land animals evolved from under the water. I would say fish and ammonites.
Why does your spine need water?
The spine needs water to be able to lubricate the joints between the vertebrae. When the spinal column gets low on moisture, the nerves within the canal can get pinched between the vertebrae.
How do fossils form by water?
waves and rocks
What is the stable water source of Dubai?
The stable water source in Dubai is deep dwelling aquifers
What is in pond water?
There is water, pond scum, plant debris and other miscellaneous debris, and water-dwelling microbes.
Mid-water dwelling is the original name of what European city?
Paris
What is the name of the water dwelling creature named after a flower?
Sea anemone
