But once Gondwana took up its polar position in the late Ordovician ... Life at the start of the Ordovician remained confined to the seas with new animals evolving in place of those that didn ...

Another significant discovery involved the mutualistic relationship between bryozoans and cnidarians in the Late ... organisms like bryozoans and corals. This phenomenon, termed the Ordovician ...

Graptoloidea - Graptolites were minute individual tube-shaped animals grouped together into colonies called "rhabdosomes", which frequently look like a single, two-sided jigsaw blade. In life, the ...

They survived solely by eating microscopic animals trapped by their stinging ... over the South Pole but the vast icecaps of the late Ordovician period melted almost to nothing.

Emma Bernard, a curator of fossil fish at the Museum, says, 'Shark-like scales from the Late Ordovician have been found, but no teeth. If these were from sharks it would suggest that the earliest ...

The diverse assemblages of these organisms in the Upper Ordovician Xiazhen Formation of ... Additionally, studies of microbial carbonates in late Cambrian biostromes reveal the intricate ...