fossil sponge造句

例句与造句

1. ""'Brooksella alternata " "'is a species of lobate Cambrian fossil sponge found in the Conasauga Formation of Alabama and Georgia.
2. To make his work as trustworthy as possible Dr Zittel made special studies of each great group, commencing with the fossil sponges, on which he published a monograph ( 1877 79 ).
3. Critical examinations of these reported fossils have concluded that the fossil sponges are inorganic silica concretions; the jellyfish are either gas escape structures or algal colonies; and the worm trails are inorganic sedimentary structures.
4. It's difficult to find fossil sponge in a sentence. 用fossil sponge造句挺难的