Cetaceans And Evolution Cetaceans There are many forms of cetacean lifespan living in the worlds waters. How an why they came into existence is uncertain, but in that respect have been many theories. Some say that dolphins are aquatic forms of goats, and others believe they evolved just like everything else, from a single cell, and non from an actual multi-cellular being. Because most cetaceans have some vestigial structures such(prenominal) as under-developed os coxae, the former of these two theories remains everyday in most researchers minds. The theory that cetaceans evolved from a goat-like being is not at all farcical.
The similarities between the skeletal systems are more than coincidental. The only difference is that the cetaceans adapted to a marine lifestyle. The face up limbs became modified as paddle-shaped flippers, the bones of which are still remindful of jointed limbs and digits, but the hind limbs were lost. The broad horizontal freighter flukes that provide the main prop...If you want to get a well(p) essay, order it on our website:
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