Ivanovia
| Ivanovia | |
|---|---|
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]
References
[edit]
- ^ a b "Ivanovia Khvorova 1946 (green algae)". Fossilworks. Macquarie University. 2007. Retrieved 17 December 2021.
- ^ a b c Torres, Andrew M. (1995). "Ivanovia tebagaensis Was a Cyathiform Permian Codiacean Membranous Alga with Dimorphic Cortices". Journal of Paleontology. 69 (2): 381–387. doi:10.1017/S0022336000034703. JSTOR 1306267. S2CID 87160638.
- ^ a b c d Torres, Andrew M. (1 January 2003). "Sexual reproductive structures in the green alga Ivanovia triassica". Lethaia. 36 (1): 33–40. doi:10.1080/00241160310001236.
- ^ Khvorova, I.V. (1946). "A new genus of algae from the middle Carboniferous deposits of the Moscow Basin". Comptes Rendus de l'Académie des Sciences de l'URSS. 23: 737–739.
- ^ Baars, D. L.; Torres, Andrew M. (October 1991). "Late Paleozoic Phylloid Algae: A Pragmatic Review". PALAIOS. 6 (5): 513. Bibcode:1991Palai...6..513B. doi:10.2307/3514989. JSTOR 3514989.
- ^ Fillmore, Robert (2010). Geological evolution of the Colorado Plateau of eastern Utah and western Colorado, including the San Juan River, Natural Bridges, Canyonlands, Arches, and the Book Cliffs. Salt Lake City: University of Utah Press. pp. 56–57. ISBN 9781607810049.
- ^ Corrochano, Diego; Vachard, Daniel (September 2014). "Remarks on the Cortical Structure of Late Paleozoic "Phylloid Algae"". Journal of Paleontology. 88 (5): 1019–1030. doi:10.1017/S0022336000057620. S2CID 232346413.
 | This Ulvophyceae-related article is a stub. You can help Wikipedia by expanding it. |