Ivanovia | |
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Scientific classification ![]() | |
Kingdom: | Plantae |
Division: | Chlorophyta |
Class: | Ulvophyceae |
Order: | Bryopsidales |
Family: | † Anchicodiaceae |
Genus: | † Ivanovia Khvorova 1946 |
Species [1] [2] [3] | |
Ivanovia permica |
Ivanovia is an extinct genus of marine green algae belonging to the order Bryopsidales and family Anchicodiaceae (sometimes placed in the family Codiaceae) [3] . Species belonging to the genus lived from the Pennsylvanian to the Permian and have been found in the Moscow basin, North America, Italy, Tunisia, and China. [1] [4] [2] [3]
Members of the genus have thalli (leaflike photosynthetic structures) that are cyathiform (cuplike in shape.) There are indications that asexual reproduction took place through budding of the thalli. [2] Sexual reproduction also took place, through reproductive structures in stalked outgrowths of the thalli (oogonia and gametangia, the female and male reproductive structures of green algae.) [3]
Bioherms (fossil algal mounds) constructed by Ivanovia are prominent in the Paradox Formation of the Colorado Plateau, where they are important petroleum reservoirs. [5] [6]
It is possible that Ivanovia is a taphotaxon of Anchicondium or Eugonophyllum ; that is, a characteristic diagenetic alteration of an original fossil organism that lacks taxonomic significance. [7]