However, no other fossil is known that would be preferable.

No other fossils are known from this scant rock record either.

Six fossils are known, all preserving bones of the skull.

Prior to 1933 very few fossils were known in New York.

The area and its fossils have been known since the 1960s, but have recently attracted increased attention.

No fossils are known from sediments deposited by this sea.

Various fossils are known from many parts of the South American continent.

While some Mesozoic fossils are known, no dinosaur remains have been found in the state.

In fact no fossils are known from surface deposits older than the Eocene.

Their development were likely amphibian, though no larval fossils are known.