Can I please get a summary of this including the main idea . Also please include

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Can I please get a summary of this including the main idea . Also please include minor points supported by evidence .

BOX ESSAY 1.3 BOX FIGURE1 Taken literally. a Tliving fossil" is a contra diction in terms because of course,fossil are dead. But occasionally a species sur vives up to the present having changed little in external appearance since the inception of its lineage In these living fos sils, evolution is arrested. Because they retain in their bodies ancient character istics and because they are living they carry forward the physiology and behav Museum South sketc to J. L. B. Smith for his missing in preserved fossils. All animals, not just a privileged few retain at least a smattering of characteristics that are throwbacks to an earlier time in retrieved and opened to spill onto the deck taxidermist who was instructed to save their evolution. The duckbill platypus, a a ton and a half of edible fish. two tons of even the parts not needed for the job. But ry mammal of Australia, still ays eggs. sharks, and one coelacanth. None of these after three days in the hot weather and no a holdover from its reptilian ancestors. old salts had ever seen such a fish and they return word from the nearest fish expert Even humans retain ancient features. We had little ideas about what it was except to whom Courtenay-Latimer have hair, for example, that comes down recognize its uniqueness. As was the cus from the most ancient of mammals. I sup tom, the crew saved the fish for the curator she told the chairman of the pose we could even count our backbone the as a retained feature of fishes! the of the tiny museum in East London Africa board of trustees what their port city. (Although this was in South scoffed suggesting that "all her geese were However, what most scientists mean Africa, a British heritage inspired local swans: Apparently, he entertained the idea of authorized the stuffing and mounting of the is an unspecialized spe names, hence East London for this museum cies, alive today. that is built from the same ancient features that first appeared in the early days of the lineage. In terms of headLatimer (box figure 1 The museum's and bedy shape, crocodiles have beenwas thin, to say labeled as living fossils, as have sturgeons and Amia the bowfin. Along the coasts of sized exhibits representing local sea life. remote area of South Africa and it w New Zealand persists a lizardlike reptile Sphenodon Four-legged and scaled. it to watch for unusual specimens. If any were looks like a squat but otherwise average were lizard. Under the skin, however, the skeletal inedible rubbish fish at the end of the day system especially the skull is quite ancient and Courtenay Latimer was called to come a descript One of the most surprising living fossils is pick what specimens she could use. On this which was the surviving sarcopterygian, Latimeria a the least, so to build local est fish expert took 11 days to reach him enthusiasm and support, she had empha because East London was still a She encouraged crews of fishing trawlers the holiday season. The expert whom caught they were included in the pile of in chemistry by profession an ichthyolo contacted wasJ L B Smith an instructor determination. The letter included particular day while sorting through fish could be the scientific find of the decade As anxic spotted the heavy scaled. blue coel coelacanth. This fish is a distant relative of she the group giving rise to the first tetrapods. acanth with fins like arms. It was 16 m in the fish, however, he could And until 1939 Latimeria was thought to length and weighed 60 kg When caught, have been extinct for millions of years make the 560-km (350 milel journey to London. He had examinations to administer t had snapped at the fishermen, but it was Latimeriaretains manryancient sarcoptery now dead and beginning to decompose and score. Eventualy, his excitement and gian creations well developed notochord. in the hot sun. By training Courtenay unique snout fleshy appendages divided tail Latimer was not an ichthyologist nor wasvisit t ts discovery excited great interest because she blessed with a staff of experts. Besides the first time.It was a coelacanth until then the last members of this line had apparently curator, she was also treasurer and secre expired 75 million years ago In 1938 Goosen,tary of the museum Although she did not In honor of the a commercial fishing captain working the recognize the coelacanth for exacty marine waters off the southern tip of Africa, it was, she was keen enough to realize the museum and peered on the fish for only from Mesozoic fossils whatand the place (Chalumna Riverl. Smith Since then, other Latimeria have been Chalumna River. He taxi driver to deliver her her assistant, and discovered off the coast of eastern Africa when he lowered his trawling Thin budgets again plagued her as there living at depths of 40 to 80 fathoms. Thanks that named it Latimeria chalumnae and was about 5 km offshore. over the subma the rather smelly fish back to the museum. and in Indonesia. They seem to be pn rine shelf, near the mouth of the largely to a captain, a curator, and a chem- into 40 fathoms (240 ft. about 73 m) of were no freezers water. An hour or so later, the nets were such a large fish. It was then taken to a ist, Latimeria is or equipment to preserve a living fossl again today 45 ntroducti

Explanation / Answer

Living fossils

Species that is built from same ancient features that first appeared in early days of lineage.a lizard like reptile that represents ancient squat ,in terms of head and shape crocodile s have also been considered as living fossils.Sarcopterygian is a surprising living fossil.Latimeria is a colecanth which was dicovered by while fishing ,it was named after ms.M coutenay latimer.Ecomorpholgy is study of ecological role of an individual and its morphological adaptation s.pronghorn a deer like animals can attaim speed likel96 kmm/hr but no natural predator till today has shown such characteristics.some swlectiom pressure helps in adaptation and induces various evolutionary force. Changes in selection pressure can be seen when homologous organisms are compared.The vertebrate evolution is also an adaptive change.transitions from water to land ( fish to tetrapod),from land to water ( reptiles to bird)and in some case the reinvasion to water (dolphins and whales. And return to terrestrial mode ( ostrich). Anatomy and its significance are province of its comparitive morphology .Darwin added descent with modification.morphology has a tight coupling with form and function.Dendograms summarize phylogenetic pattern and suggest process producing change through time.hard bones and teeeth survive the hard process of fossilization.ocassionally footprint s soft parts survive the harsh process of fossilization.reconstruction from fossil material can bring early organisms back to life.High speed functional analysis helps to analyse the facts of fossils.so survival depend s on form and function matched adaptively to selection forces met in environmental where features serve .

As it is a summary I tried to make it look like a summary if it is not clear please let me know I ll send an elaborate one.

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