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71194de
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But just in proportion as this process of extermination has acted on an enormous scale, so must the number of intermediate varieties, which have formerly existed, be truly enormous. Why then is not every geological formation and every stratum full of such intermediate links? Geology assuredly does not reveal any such finely graduated organic chain; and this, perhaps, is the most obvious and serious objection which can be urged against the theory. The explanation lies, as I believe, in the extreme imperfection of the geological record.
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evolution
conclusion-before-evidence
intermediate-forms
missing-links
fossils
paleontology
fossil-record
macro-evolution
macroevolution
darwinism
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Charles Darwin |
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6f6955c
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Bird asked what a paleontologist was and Mom said that if he took a complete, illustrated guide to the Metropolitan Museum of Art, shred it into a hundred pieces, cast them into the wind from the museum's steps, let a few weeks pass, went back and scoured Fifth Avenue and Central Park for as many surviving scraps as he could find, then tried to reconstruct the history of painting, including schools, styles, genres, and names of painters from his scraps, that would be like a paleontologist.
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reconstruction
paleontology
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Nicole Krauss |
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c94d9a7
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SHERIDEN CAVE, OHIO: There are [Younger Dryas Boundary] peaks in magnetic spherules, meltglass, nanodiamonds, Pt, and Ir. A charcoal-rich black mat dates to the [Younger Dryas] onset and contains peak abundances of charcoal, AC/soot, carbon spherules, and nanodiamonds that are closely associated with the last known Clovis artifacts in the cave. The black-mat layer is in direct contact with the wildfire-charred bones of two mega-mammals, the flat-headed peccary ( ) and the giant beaver ( ), that are the last known examples anywhere in the world of those extinct species.
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comet-impact
wildfires
paleontology
younger-dryas
deep-human-history
extinction
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Graham Hancock |
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ec8a400
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[The cosmic impact that started the Younger Dryas] marked the end of their story, and the end of an epoch, really. There's not a single Clovis point found anywhere in North America that's above that black mat. They're all in it or below it. And there's not a single mammoth skeleton anywhere in North America that's above it. A huge part of the die-off could have been as a direct result of the impacts themselves, but impacts and airbursts south of the ice cap, particularly as far south as New Mexico, would also have set off wildfires. There's overwhelming evidence that gigantic wildfires raged at the onset of the Younger Dryas--in fact, more soot has been found at the Younger Dryas Boundary than at the Cretaceous-Paleogene Boundary. We did the calculations and it looks like as much as 25 percent of the edible biomass and around 9 percent of the total biomass of the planet was on fire and destroyed within days or weeks of the YDB. So in many areas if the animals weren't killed outright they wouldn't have been able to forage enough food afterwards to survive. The grass would have burned up, leaves on trees were gone. ... And you know, the other thing is that when comet fragments come in they're traveling incredibly fast and they literally punch a hole in the atmosphere. They actually push the air aside and they bring in that super cold from space, and when they explode in the air that cold plume continues to the ground and you literally have things frozen in place if they were close enough to where the plume came down. It's possible they were fried and then frozen all within a matter of seconds.
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epoch
wildfires
cosmic-impact
paleontology
younger-dryas
evidence
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Graham Hancock |
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d35039c
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As the discoverer and principal excavator of Murray Springs, [...] Haynes deserves credit for drawing attention to a very curious aspect of the site--a distinct dark layer of soil draped 'like a shrink-wrap,' as Allen West puts it, over the top of the Clovis remains and of the extinct megafauna--including Eloise. Haynes has identified this 'black mat' (his term) not only at Murray Springs but at dozens of other sites across North America, and was the first to acknowledge its clear and obvious association with the Late Pleistocene Extinction Event. he speaks of the 'remarkable circumstances' surrounding the event, the abrupt die-off on a continental scale of all large mammals 'immediately before deposition of the ... black mat,' and the total absence thereafter of 'mammoth, mastodon, horse, camel, dire wold, American lion, tapir and other [megafauna], as well as Clovis people.' Haynes notes also that 'The basal black mat contact marks a major climate change from the warm dry climate of the terminal Allerod to the glacially cold Younger Dryas.' From roughly 18,000 years ago, and for several thousand years thereafter, global temperatures had been slowly but steadily rising and the ice sheets melting. Our ancestors would have had reason to hope that earth's long winter was at last coming to an end and that a new era of congenial climate beckoned. This process of warming became particularly pronounced after about 14,500 years ago. Then suddenly, around 12,800 years ago, the direction of climate change reversed and the world turned dramatically, instantly cold--as cold as it had been at the peak of the Ice Age many thousands of years earlier. This deep freeze--the mysterious epoch now known as the Younger Dryas--lasted for approximately 1,200 years until 11,600 years ago, at which point the climate flipped again, global temperatures shot up rapidly, the remnant ice sheets melted and collapsed into the oceans, and the world became as warm as it is today.
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pleistocene
paleontology
younger-dryas
ice-sheets
extinction
climate-change
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Graham Hancock |
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0d77e58
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As a paleontologist, [...] I ask the question--why there humans here earlier? I mean, we have dispersal of Eurasian animal species into North America and dispersal of North American species into Eurasia at earlier times. So why humans have been here as well? [Quoting Tom Demere]
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humanity
paleontology
humans
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Graham Hancock |