In the beginning of Cretaceous period, the seas began to raise, and
large areas in northern and central Australia became inundated. (That's
when the Great Artesian Basin was formed
in central
Queensland).
There was also a new chain of volcanoes, mainly andesitic, in north
Queensland and Tasmania. Gondwana continent started to break up - India
took off.
The climate was still warm and humid (temperate) and there was plenty
of rainforest which was the dinosaur habitat.
Central
Queensland is a dinosaur hotspot with
skeletons/tracks found around Winton
(including Lark Quarry); Muttaburra
(Muttaburrasaurus), Hughenden and Richmond
(Kronosaurus).
Other places where fossils have been found are in southern Victoria,
and Broome
in the Kimberley
region in Western
Australia. In most of those places there
are dinosaur statues and often a museum that displays their fossils and
skeletons.
Other Cretaceous animals included fish, lungfish, shells, insects,
ammonites, crocodiles,
turtles,
platypus,
giant marine reptiles, and modern birds
with feathers.
Plants included cycads,
ferns,
mosses, kauri, hoop and Bunya Pines, and podocarps such as Huon Pines.
What was new was that during this period, the first
flowering
plants (angiosperms) evolved.
Note:
This site uses
British English, which is the English we use in Australia. You will
find words like "traveller", "harbour" and "realise", and they are all
correct in the language used in Australia.
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