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The mammal-like reptiles, or , suffered pulses of extinctions in the Late Permian.

The group survived the boundary crisis but became virtually extinct by the end of the Triassic, possibly because of competition from more-efficient predators, such as the thecodonts.

The slides showed the stone circles at Stonehenge, Avebury, Stanton Drew and the Rollright Stones.

Old Maps Online developed out of a love of history and heritage of old maps.

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The website has been created by Klokan Technologies Gmb H, specialists in online map publishing and in applications of open-source software.Whereas Early Triassic forms were still Paleozoic in aspect, new forms appeared throughout the period, and by Late Triassic times the tetrapod fauna was distinctly Mesozoic in aspect.Modern groups whose ancestral forms appeared for the first time in the Middle and Late Triassic include lizards, turtles, rhynchocephalians (lizardlike animals), and crocodilians.The dating is based on the inks and materials used to make the map, and on the place names. Hade he no fere bot his fole bi fryþez and dounez, 696.