when was the first ancient continent mentioned above formed?
The assembly of Gondwana was a protracted process during the Neoproterozoic and Paleozoic, which however remains incompletely understood because of the lack of paleo-magnetic data.
Gondwana
The assembly of Gondwana was a protracted process during the Neoproterozoic and Paleozoic, which however remains incompletely understood because of the lack of paleo-magnetic data. 
what is postelsia? The sea palm from where does it get its name? From geologist Alexander Philipov Postels and artist who worked with Ruprecht, while the specific name, "palmaeformis", describes the alga's superficial similarity in appearance to true palms. where is it found? In California are any fossils available? Yes, from Monte Bolca, a lagerstätte near Verona is it edible? Yes, the blades are sometimes used in certain dishes are any animal fossils also found in the first place where these fossils are sound? Yes, Monte Bolca has crustaceans, jellyfish and polychaete worms what are its geological features? It was uplifted from the Tethys Ocean floor during the formation of the Alps, in two stages: one 24 million years ago, and one between 30 and 50 million years ago. where is this ocean? Between the ancient continents of Gondwana and Laurasia what are the subdivisions of the ocean? he eastern part of the Tethys Ocean is sometimes referred to as Eastern Tethys. The western part of the Tethys Ocean is called Tethys Sea, Western Tethys Ocean, or Paratethys or Alpine Tethys Ocean.
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Gondwana [SEP] Formation
The assembly of Gondwana was a protracted process during the Neoproterozoic and Paleozoic, which however remains incompletely understood because of the lack of paleo-magnetic data. Several orogenies, collectively known as the Pan-African orogeny, led to the amalgamation of most of the continental fragments of a much older supercontinent, Rodinia. One of those orogenic belts, the Mozambique Belt, formed and was originally interpreted as the suture between East (India, Madagascar, Antarctica, and Australia) and West Gondwana (Africa and South America). Three orogenies were recognized during the 1990s: the East African Orogeny () and Kuunga orogeny (including the Malagasy Orogeny in southern Madagascar) (), the collision between East Gondwana and East Africa in two steps, and the Brasiliano orogeny (), the successive collision between South American and African cratons.