The early occurrence of aspidin has always strengthened the opinion that it is the more primitive condition.

It may represent an earlier occurrence of this group, at about 140 million years ago.

The earliest occurrences of soup kitchens are difficult to identify.

At the time, this was believed to be the earliest occurrence of life on land.

Perhaps the earlier occurrence had been a random happening with little chance of repetition.

Another of the earliest strange occurrences happened near the end of May 1889.

For an earlier occurrence of Eldakar see p. 276.

This name was added to the typescript at earlier occurrences: p. 69, $25.

However, the early occurrence of the Gastornithiformes in the fossil record poses problems.

This usage is the earliest extant occurrence of the term in philosophy.