Modern dating prehistoric style Langeland
Date: 2017-02-22 18:27
- 17 Out-of-Place Artifacts Said to Suggest High-Tech
- Prehistoric America plus the Ainu and Jomon
- NOVA - Official Website | Australia: First 4 Billion Years
The Gravettian was a European Upper Palaeolithic culture whose name derives from the type-site of La Gravette in the Dordogne department of France. Practised in eastern, central and western Europe, its signature tool (derived from the Châ telperron point) was a small pointed blade with a blunt but straight back - called a Gravette Point. Personal jewellery continued to be manufactured, and more personal property is evident, indicating an increasing degree of social stratification.
17 Out-of-Place Artifacts Said to Suggest High-Tech
Both belong to a class of birdlike dinosaurs that ran swiftly on two legs and are called dromaeosaurs. The new find suggests such raptors go back much further in time than previously thought.
Prehistoric America plus the Ainu and Jomon
RICHARD SMITH: These soft sediments settled on the sea floor with the precision of grooves, on an . record, each band turning to the beat of an ancient tide. The fine undisturbed layering of this tidal calendar could only have formed one way: with the sea floor protected by a ceiling of ice.
NOVA - Official Website | Australia: First 4 Billion Years
RICHARD SMITH: Opal formed here, it's thought, when silica-laden water leached through the rock, pooled where it met resistance, and then slowly evaporated. Occasionally, when this mineral-rich water encountered a fossil, a biological treasure became a mineralogical one, as well.
At Tunnel Creek, one such stream has carved its way right through the Devonian limestone range. It's a deliciously cool change from the sweltering heat outside and offers dark access to the very heart of the reef itself.
TIM FLANNERY: I crawled around on my hands and knees for days on the edge of a salt lake, and I finally picked up this thing that was the size of a match head, really, it was just this tiny bone, and I knew immediately, I put it on my tongue, washed the salt off it so I could see it properly and knew that it was the ankle bone of an ancient, ancient kangaroo, far more primitive than anything that had been seen before.
I'm heading to Coober Pedy, on its southern shoreline. Scattered on the outskirts of town are strange clues to its past: petrified driftwood, the salty glint of gypsum, even rocks dropped from winter ice that once rafted overhead.
RICHARD SMITH: With every fossil-rich boulder recovered, and bone, tooth and jaw released from acid bath, the ancient animals of Riversleigh are telling their own backstory of Neogene Australia. It was in the Neogene that Australia began to show its true colors.
Now this is something truly special, a living link to our fossil past. It's the Queensland lungfish, Neoceratodus forsteri, and I'm trying to hold him, I hope. Now, he is the most primitive of the handful of lungfish that still swim on Planet Earth. Think about it for a moment. These guys were already ancient history a hundred-million years before the first dinosaurs walked the earth. And if you're worried about that "fish out of water" thing, these guys are called lungfish for a reason: they're built for it.
A whole suite of reef-building organisms built this great Devonian Reef above me. You can see a lot of their ghostly remains in the rocks, still: sponges, stromatolites, corals, strange extinct things called "stromatoporoids." But the real stars of the show, here, weren't the things that made the reef, but the things that swam around outside it, things with fins, because this was the great "Age of the Fishes..