In the modern world there are over 100 species of sharks because of this you can imagine how hard it would be to trace back to the one that gave all sharks its characteristics but, hey such is life sharks are among earth's oldest life-forms, being that the history of sharks started somewhere. Hungry shark evolution is the 5th installment of the hungry shark series released on the 18th of october, 2012, created by future games of london (fgol)it introduces new sharks and creatures to the hungry shark series as well as missions, objects and other content. Sharks have evolved several unique characteristics during their evolution, one of which is the rapid replacement and regrowth of teeth considering this is the only part of the shark that is usually fossilized (excluding skin), we can identify many species (like the hybodonts) based on tooth shape. Licensed to youtube by [merlin] mountainapplecompany, umg (on behalf of big boy record company) abramus digital, ubem, solar music rights management, emi music publishing, and 18 music rights. The evolution of lamnoid sharks the lamnoids (order lamniformes) include many of the most famous and instantly-recognizable of sharks the goblin shark, sandtiger, threshers, megamouth, basking, and the great white are all members of this group.
Evolution of sharks early fossil shark teeth the earliest known fossil shark teeth are those of leonodus dating back some 400 million years. Shark fossils have helped scientists conclude numerous facts about the evolution of sharks they are believed to have first appeared on the planet nearly 455 million years ago doliodus problematicus is the name given to the fossil thought to be the oldest discovered thus far. Sharks are commonly termed fish, even though they are only distantly related to the classical (bony) fish the evolutionary lines of the cartilaginous and bony fish separated about 400 million years ago.
The evolution of fish began about 530 million years ago during the cambrian explosion it was during this time that the early chordates developed the skull and the vertebral column , leading to the first craniates and vertebrates. Strange species of sharks like the stethacanthus, a shark like a flat anvil-like, spiky fin, the eugeneodontida, a shark with a tooth whorl at the end of their bottom jaw, and the falcatus, nickname the unicorn shark, grew a long, sharp horn on it's head evolved during this period. Now nearly 400,000 millennia on and evolution has generated over 1,200 highly advance species of sharks and rays, encompassed within the elasmobranchii (sharks, rays and skates) and holocephali (chimaeras, also known as ghost sharks), which have all diverged from the chondrichthyans (fao species catalogue, 2002. Evolution of sharks: zoom sharks is a comprehensive on-line hypertext book about sharks it is designed for people of all ages and levels of comprehension it has an easy-to-use structure that allows readers to start at a basic level on each topic, and then to progress to much more advanced information as desired, simply by clicking on links.
In early white shark evolution there are at least two lineages: one lineage is of white sharks with coarsely serrated teeth and it probably gave rise to the modern great white shark, and another lineage is of white sharks with finely serrated teeth. The evolution of the shark is full of gaps and theories, due to the animal's cartilaginous skeleton, which unfortunately means that few fossils remain thousands of fossilised shark scales have been found, along with numerous fin spines. Over many millions of years of evolution, sharks have become some of the speediest swimmers in the ocean thanks to several adaptations the first is their unique skin, which is made up of millions of small v-shaped placoid scales, also called dermal denticles. Jawed and bony fish began to diversify, including the evolution of a group of fish called acanthodians, or spiny sharks these extinct fish looked like small sharks but had varying numbers of fins.
The idea of a close relationship between great whites and megalodon started in 1835, when louis agassiz, a swiss paleontologist and fish expert, formally named the giant species. Articles about specific sharks will be included in this category the baby counterparts of these sharks will still be eligible for placement in this category please note that vague ideas for sharks that have not been implied by fgol will not be included. The evolution of elasmobranchs (sharks, rays and skates) most of the planet is ocean, and most of the ocean is pelagic earth is the pelagic planet and the principle apex predators of that realm for the last few hundred million years have been elasmobranchs (sharks and rays. Prehistoric sharks: shark history and evolution through time sharks are fish of the condrichthyes class the condrichthyes are a truly ancient class of fish, and are the ultimate survivors. The evolution of sharks over 400 million years ago, innumerable species of bony fish and marine animals inhabited the earth's seas this time period, known in history as the devonian era, also gave birth to a family of fish unlike any other of the time, known as chondrichthyes.
Sharks are one of evolution's most enduring success stories although they have few hard parts that can survive the insults of geologic time, sharks have left a long and rich fossil record some 2,000 to 3,000 species of fossil shark have been described. Sharks did not have a brain as large as they have today more than 2/3 of the size of their brain is for the senses, and this is one of the areas where sharks have significantly been able to evolve and to become a more intelligent species. It describes interesting facts about the evolution of sharks slide 1 of 4 sharks are the living descendants of an ancient lineage of animals, known from fossils to have existed at least since the upper silurian period, about 420 million years ago.
While working on marine xenobiology on the cwp i got across the most successful marine predator of all time: the shark here is a short history of sharks if you have any projects you want to. Before discussing shark evolution, though, it's important to define what we mean by shark technically, sharks are a suborder of fish whose skeletons are made out of cartilage rather than bone sharks are also distinguished by their streamlined, hydrodynamic shapes, sharp teeth, and sandpaper-like. Evolution of polar bears the observed fossil transitions that inform our knowledge of polar bear speciation are very well documented bear fossils change through time: generally, when examining the fossil record, successively deeper levels of sediments or sedimentary rocks yield successively older fossils.