| 词条 | Receptaculites |
| 释义 |
| fossil_range = {{fossilrange|488|250}} | image = Receptaculitid.JPG | image_caption = Receptaculitid from the Ordovician of Estonia. | domain = Eukaryota | regnum = Plantae | divisio = Chlorophyta | classis = Ulvophyceae | ordo = Dasycladales | familia = Receptaculitidae | genus = Receptaculites | genus_authority = Blainville 1830 | subdivision_ranks = Species[1] | subdivision =
}}Receptaculites is the name-bearing genus for an extinct group of conspicuous benthic marine genera, the Receptaculitidae, that lived from the Early Ordovician through the Permian period, peaking in the Middle Ordovician. The group's phylogenetic origin has long been obscure, but the current understanding is that the Receptaculitidae were calcareous algae, probably of the Order Dasycladales.[2] Receptaculitids lived in warm, shallow seas[2] and have been described from all continents except Antarctica.[3] In some areas they were important reef-formers, and they also occur as isolated specimens.[4] Receptaculites and its relatives have a double-spiral, radiating pattern of rhombus-shaped plates supported by spindle-like objects called meroms. Fossils can usually be identified by the intersecting patterns of clockwise and counterclockwise rows of plates or stalk spaces, superficially similar to the arrangement of disk florets on a sunflower—hence the common name "sunflower coral" (sic). References1. ^{{Cite web| url = http://paleodb.org/cgi-bin/bridge.pl?a=checkTaxonInfo&taxon_no=56444&is_real_user=1 | publisher = The Paleobiology Database | accessdate = 2011-08-15 | title = Family: Receptaculitidae | author = | year = }} {{Taxonbar|from=Q7302354}}2. ^1 Byrnes, J.G. 1968. Notes on the nature and environmental significance of the Receptaculitaceae. Lethaia, vol. 1, p. 368-381. 3. ^Rietschel, S. and Nitecki, M.H. 1984. Ordovician Receptaculitid algae from Burma. Palaeontology, vol. 27, p. 415-420. 4. ^Pratt, B.R. and Weissenberger, J., 1988. Fore-slope Receptaculitid mounds from the Frasnian of the Rocky Mountains, Alberta. In: Reefs: Canada and adjacent areas, Canadian Society of Petroleum Geologists Memoir 13, p. 510-513. 13 : Paleozoic plants|Ulvophyceae genera|Fossil algae|Early Ordovician first appearances|Permian genus extinctions|Paleozoic life of Ontario|Paleozoic life of Alberta|Paleozoic life of British Columbia|Paleozoic life of Manitoba|Paleozoic life of Newfoundland and Labrador|Paleozoic life of the Northwest Territories|Paleozoic life of Nunavut|Paleozoic life of Quebec |
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