silurian

As an adjective silurian

is (geology) of a geologic period within the paleozoic era; comprises the llandovery, wenlock, ludlow and pridoli epochs from about 439 to 409 million years ago.

As a proper noun silurian

is (geology) the silurian period.

As a noun stromatoporoid is

any of several fossil aquatic invertebrates, of the order stromatoporoidea , from the silurian and devonian periods.

As adjectives the difference between silurian and homerian

is that silurian is (geology) of a geologic period within the paleozoic era; comprises the llandovery, wenlock, ludlow and pridoli epochs from about 439 to 409 million years ago while homerian is of or relating to homer, the ancient greek poet.

As proper nouns the difference between silurian and homerian

is that silurian is (geology) the silurian period while homerian is (geology|paleontology) a subdivision of the silurian period.

As adjectives the difference between silurian and acanthodian

is that silurian is (geology) of a geologic period within the paleozoic era; comprises the llandovery, wenlock, ludlow and pridoli epochs from about 439 to 409 million years ago while acanthodian is pertaining to acanthodii.

As a proper noun silurian

is (geology) the silurian period.

As a noun acanthodian is

(zoology) a member of a group of extinct fish (acanthodii) that existed from the silurian to the permian periodbrown, lesley, ed the shorter oxford english dictionary 5th oxford: oxford university press, 2003.