Definitions Found:
a fossil marine invertebrate
- dendroida fossil marine invertebrate
- brachiopoda bivalve marine invertebrate
- brachiopodsBRACHIOPOD, a bivalve marine invertebrate
- hemichordatesA marine invertebrate of the phylum Hemichordata; an acorn worm
- hemichordateA marine invertebrate of the phylum Hemichordata; an acorn worm
- urochordateA marine invertebrate of the group Urochordata, which comprises the tunicates
- urochordatesA marine invertebrate of the group Urochordata, which comprises the tunicates
- brachiopodA marine invertebrate of the phylum Brachiopoda, which comprises the lamp shells
- brachiopodsA marine invertebrate of the phylum Brachiopoda, which comprises the lamp shells
- echinodermsA marine invertebrate of the phylum Echinodermata, such as a starfish, sea urchin, or sea cucumber
- echinodermA marine invertebrate of the phylum Echinodermata, such as a starfish, sea urchin, or sea cucumber
- globigerinaa minute marine invertebrate of the genus Globigerina, with a calcareous shell of globose chambers in a spiral
- globigerinaeGLOBIGERINA, a minute marine invertebrate of the genus Globigerina, with a calcareous shell of globose chambers in a spiral
- globigerinasGLOBIGERINA, a minute marine invertebrate of the genus Globigerina, with a calcareous shell of globose chambers in a spiral
- phoronidany member of the invertebrate phylum Phoronida, wormlike marine animals living in a chitinous tube and having an anterior structure bearing ciliated tentacles for feeding
- lanceletsA small elongated marine invertebrate that resembles a fish but lacks jaws and obvious sense organs. Lancelets possess a notochord and are among the most primitive chordates
- tunicatesA marine invertebrate of a group that includes the sea squirts and salps. They have a rubbery or hard outer coat and two siphons to draw water into and out of the body
- graptolitesAn extinct marine invertebrate animal of the Paleozoic era, forming mainly planktonic colonies and believed to be related to the pterobranchs
- graptoliteAn extinct marine invertebrate animal of the Paleozoic era, forming mainly planktonic colonies and believed to be related to the pterobranchs
- pliosaura type of fossil marine reptile
- pliosaursPLIOSAUR, a type of fossil marine reptile
- ichthyosauriana large fossil marine reptile also ICHTHYOSAUR, ICHTHYOSAURUS
- ichthyosaurusa large fossil marine reptile also ICHTHYOSAUR, ICHTHYOSAURIAN
- ichthyosaura large fossil marine reptile also ICHTHYOSAURIAN, ICHTHYOSAURUS
- ichthyosauriansICHTHYOSAURIAN, a large fossil marine reptile also ICHTHYOSAUR, ICHTHYOSAURUS
- ichthyosauriICHTHYOSAURUS, a large fossil marine reptile also ICHTHYOSAUR, ICHTHYOSAURIAN
- ichthyosaurusesICHTHYOSAURUS, a large fossil marine reptile also ICHTHYOSAUR, ICHTHYOSAURIAN
- ichthyosaursICHTHYOSAUR, a large fossil marine reptile also ICHTHYOSAURIAN, ICHTHYOSAURUS
- acritarchany of a group of fossil one-celled marine organisms
- acritarchsACRITARCH, any of a group of fossil one-celled marine organisms
- nummuliteThe flat disk-shaped calcareous shell of a foraminifer, found commonly as a fossil up to 8 cm across in marine Tertiary deposits
- nummulitesThe flat disk-shaped calcareous shell of a foraminifer, found commonly as a fossil up to 8 cm across in marine Tertiary deposits
- ammonoidAn extinct cephalopod mollusk with a flat-coiled spiral shell, found commonly as a fossil in marine deposits from the Devonian to the Cretaceous periods
- ammonoidsAn extinct cephalopod mollusk with a flat-coiled spiral shell, found commonly as a fossil in marine deposits from the Devonian to the Cretaceous periods
- belemnitesAn extinct cephalopod mollusk with a bullet-shaped internal shell that is often found as a fossil in marine deposits of the Jurassic and Cretaceous periods
- belemniteAn extinct cephalopod mollusk with a bullet-shaped internal shell that is often found as a fossil in marine deposits of the Jurassic and Cretaceous periods