eozoon canadense, rhizopode foraminifera, the oldest known fossil, vintage engraving

adhesion ancient animal animalcules antique art artwork biology black box canadense carapace chamber channel colony communication contain cross drawing engraved engraving eozoon etching footprint foraminifera fossil fragment gallery growth illustration laurentian limestone old oldest organism pattern picture point porous pseudopod rhizopode science section series tentacle two vector view vintage white