Doryderma
Name: Doryderma.
Meaning: Porous-skinned.
Grouping: Poriferan,
Demosponge, Lithistid,
Megamorinan, Dorydermatid.
Informal ID: Doryderma
sponge.
Fossil size: Specimen
7cm/2%in high
Reconstructed size: 50cm/
20in plus.
Habitat: Sea floor.
Time span: Carboniferous
to Late Cretaceous, 350-85
million years ago.
Main fossil sites:
Throughout Europe.
Occurrence: ••