Silur: Difference between revisions

[[Coral reef]]s made their first appearance during this time, built by extinct [[Tabulate coral|tabulate]] and [[Rugosa|rugose coral]]s. The first bony fish, the [[Osteichthyes]] appeared, represented by the [[Acanthodian]]s covered with bony scales; fishes reached considerable diversity and developed movable [[jaw]]s, adapted from the supports of the front two or three [[gills|gill arches]]. A diverse fauna of [[Eurypterus]] (Sea Scorpions) -- some of them several meters in length -- prowled the shallow Silurian seas of North America; many of their [[fossil]]s have been found in [[New York State]]. [[Brachiopoda|Brachiopods]], [[bryozoa]], [[mollusca|molluscs]], and [[trilobite]]s were abundant and diverse.

 

 

=== Planem silurik ===