Antennule: front appendage in ostracodes, used for swimming or stability.

Aperture: opening in foraminifera through which most of the soft tissue projects.

Autotroph: organism that synthesizes organic compounds from inorganic materials. Such organisms are sometimes called producers.

Benthos: bottom-dwelling organisms.

Calcite compensation depth (CCD): depth in the oceans at which calcite becomes unstable and may dissolve. Carapace: term for "shell" used for ostracodes. Centrales: circular diatoms with radial symmetry. Chamber: one repeated element of calcareous foraminiferal tests.

Coniform: cusp-shaped conodont elements. Diatomites: lithified diatom oozes.

Epifaunal: organism living on the surface of the sediment. Frustule: term for "shell" used for diatoms. Heterococcoliths: coccoliths formed from crystals of varying sizes.

Heterotroph: organism that consumes other organisms or decaying matter. Such organisms are sometimes called consumers.

Holococcoliths: coccoliths formed from identically sized calcite crystals.

Infaunal: organism living within sediment. Megaspores: large spores up to 4 mm in diameter.

Nannofossils: submicroscopic fossils generally less than 50 |lm. Nannoplankton: submicroscopic floating organisms. Nassellaria: radiolarians with conical tests. Paleobathymetry: depths of ancient marine deposits. Palynology: study of spores and pollen. Pectiniform: broad-based, multicusped conodont elements. Pelagic: organism living within the water column. Pennales: elliptical diatoms with bilateral symmetry. Photic zone: lighted part of the water column. Phytoplankton: microscopic, photosynthetic, floating organisms. The two main groups are the diatoms and dinoflagellates. Planktic: floating lifestyle within the water column. Primary producers: equivalent to autotrophs. Organisms that produce organic substances from inorganic material. Primary producers are usually photosynthetic organisms. Protoplasm: very general term for material contained within the cell.

Pseudopodia: strands of protoplasm that aid locomotion and trap food in foraminifera.

Ramiform: blade-like, multicusped conodont elements.

Setae: sensory bristles in ostracodes.

Spumellaria: radiolarians with spherical tests.

Test: term for "shell" used for foraminiferans and radiolarians.

Zone fossils: fossils that characterize particular sections of the stratigraphic record.

Zooplankton: non-photosynthetic floating organisms, that feed on phytoplankton or suspended organic matter.

Was this article helpful?

0 0
Survival Basics

Survival Basics

This is common knowledge that disaster is everywhere. Its in the streets, its inside your campuses, and it can even be found inside your home. The question is not whether we are safe because no one is really THAT secure anymore but whether we can do something to lessen the odds of ever becoming a victim.

Get My Free Ebook


  • johanna kuester
    Is a pennale an autotroph?
    8 years ago

Post a comment