Parentheses and brackets ( ) [ ] Round Brackets Round brackets (also called parentheses, especially in American English) are mainly used to separate off information that isnât essential to the meaning of the rest of the sentence. If you removed the bracketed material the sentence would still make perfectly good sense.
Most of the facts about the Velociraptor are now well known. This is due to the discovery of several fossils. It lived during the Cretaceous period and became extinct 70 to 80 million years ago. Like the other dinosaurs it likely perished when a comet / asteroid struck the Earth at the time.
The introduction of a bicycle predecessor in the US was made by M. Stewart of Baltimore, followed in 1819 by David and Rogers, manufacturing in Troy, New York (who made a total of three velocipedes.) On 26 June 1819, the first US patent for a velocipede was issued to William K. Clarkson, Jr., also of New York.