Graptolites Up Close. An Illustration Of The Small Extinct Marine Animal Graptolites. They Freely Floated In The Shallow Seas Of The Ordovician Between 485.4 And 443.8 Million Years Ago. They Were About 1 To 3 Wide.

KEYWORDS

443 485 ago ancient animal benthos cambrian carboniferous colonies devonian diplograptus era extinct floated floating fossil freely graptolite graptolites illustration life marine micro middle million night ocean ordovician organism paleontology past plankton prehistoric scientific sea seas shallow small tentaclescategory wide years