fusulinid

fusulinid
Any of a large group of extinct foraminiferans, single-celled organisms related to amoebas but having complex shells that are easily preserved as fossils.

The fusulinids first appeared during the Carboniferous period, perhaps с 320 million years ago, and persisted until the end of the Permian period, 248 million years ago. They have been extremely useful for correlating different rock units in widely separated regions and for dividing geologic time into smaller units. Petroleum geologists also use them to help locate economically valuable deposits of oil and natural gas.

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      any of a large group of extinct foraminiferans (single-celled organisms related to the modern amoebas but having complex shells that are easily preserved as fossils). The fusulinids first appeared late in the Early Carboniferous Epoch, which ended 318 million years ago, and persisted until the end of the Permian Period, 251 million years ago. Where they occur, the fusulinids have proven to be extremely useful for correlating different rock units in widely separated regions and for dividing geologic time into smaller units. Petroleum geologists also use them as keys to the locations of economically important deposits of oil and natural gas. Many forms of fusulinids are known, from barely visible species to forms that are easily seen with the naked eye and may be as much as 5 cm (2 inches) long. Many fusulinids resemble grains of wheat; the internal structure, however, is very complex and distinctive. The shell consists of a series of chambers formed about a central longitudinal axis. Complex patterns in the number and arrangement of internal walls and deposits are present and aid in classification and the working out of evolutionary relationships. Most fusulinids lived in clear marine water far from the shore.

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Universalium. 2010.

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  • Fusulinid — Taxobox name = Fusulinids fossil range = Silurian Permian image width = 220px domain = Eukaryota regnum = Rhizaria phylum = Foraminifera ordo = Fusulinida subdivision ranks = Superfamilies subdivision = Archaediscacea Colaniellacea Earlandiacea… …   Wikipedia

  • fusulinid — noun Etymology: New Latin Fusulinidae, from Fusulina, a genus, from Latin fusus spindle + ulus ule + New Latin ina, diminutive suffix Date: 1941 any of a family (Fusulinidae) of extinct marine foraminifers …   New Collegiate Dictionary

  • fusulinid — fu·su·lin·id …   English syllables

  • fusulinid — …   Useful english dictionary

  • Micropaleontology — Fusulinid (Triticites) from the Plattsmouth Chert, Red Oak, Iowa (Permian). Micropaleontology (also sometimes spelled as micropalaeontology) is the branch of paleontology that studies microfossils. Contents …   Wikipedia

  • Moscovian (Carboniferous) — System Subsystem/ Series Stage Age (Ma) Permian Cisuralian Asselian younger Carboniferous Pennsylvanian …   Wikipedia

  • Parafusulina — Taxobox name = Parafusulina regnum = Rhizaria phylum = Foraminifera ordo = Fusulinida superfamilia = Fusulinacea familia = Schwagerinidae genus = Parafusulina subdivision ranks = Species subdivision = P. antimonioensi P. attenuata P. boesei P.… …   Wikipedia

  • Paraschwagerina — Taxobox name = Paraschwagerina regnum = Rhizaria phylum = Foraminifera ordo = Fusulinida superfamilia = Fusulinacea familia = Schwagerinidae genus = Paraschwagerina Paraschwagerina is a genus of fusulinids, an extinct group of protozoans …   Wikipedia

  • Foraminifera — Taxobox name = Foraminifera fossil range = fossil range|600 image width = 200px image caption = Live Ammonia tepida (Rotaliida) domain = Eukaryota regnum = Rhizaria superphylum = Retaria phylum = Foraminifera phylum authority = d Orbigny, 1826… …   Wikipedia

  • Fusulinida —   Fusulinida Rango temporal: Silúrico Pérmico …   Wikipedia Español

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