无板纲

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无板纲
Aplacophora
Head region of the caudofoveate Falcidens
Head region of the caudofoveate Falcidens
科學分類
域: 真核域 Eukarya
界: 动物界 Animalia
亞界: 真后生动物亚界 Eumetazoa
(未分级) 两侧对称动物 Bilateria

原口动物 Protostomia

超门: 冠輪動物總門 Lophotrochozoa
門: 软体动物门 Mollusca
綱: 无板纲 Aplacophora

見內文

无板纲學名Aplacophora)是软体动物门的一个纲。仅有250种左右。是一类身体呈蠕虫状的软体动物。

分類[编辑]

過往當生物分類學純綷以形態學為分類準則之時,無板綱物種曾被以為跟海參同類,這一點可在1987年之前的分類中看見。從1987年起,本分類得到確認為軟體動物之一,因而成為一個獨立的綱。當時本綱由兩個群組成,分別為[1]

這兩個群最初以為只是並系群,但近年的分子數據支持兩個群是單系群的論說[5][6]

從分子數據及化石的分析,無板綱很大可能是從多板纲演化,只是後來這些「板」都退化了[5][6][7][8][9]

參考資料[编辑]

  1. ^ Giribet, G.; Okusu, A, A.; Lindgren, A.R., A. R.; Huff, S.W., S. W.; Schrödl, M, M.; Nishiguchi, M.K., M. K. Evidence for a clade composed of molluscs with serially repeated structures: monoplacophorans are related to chitons (Free full text). Proceedings of the National Academy of Sciences of the United States of America. May 2006, 103 (20): 7723–7728. Bibcode:2006PNAS..103.7723G. doi:10.1073/pnas.0602578103. PMC 1472512. PMID 16675549.  编辑
  2. ^ WoRMS. Solenogastres. World Register of Marine Species. 
  3. ^ Gegenbaur, C. Grundriss der vergleichenden Anatomie. Zweite verbesswerte Auflage.. Leipzig: W. Engelmann. 1878: 135 (德文). 
  4. ^ WoRMS. Caudofoveata. World Register of Marine Species. 
  5. ^ 5.0 5.1 Kocot, K. M.; Cannon, J. T.; Todt, C.; Citarella, M. R.; Kohn, A. B.; Meyer, A.; Santos, S. R.; Schander, C.; Moroz, L. L. et al. Phylogenomics reveals deep molluscan relationships. Nature. 2011, 477 (7365): 452–456. doi:10.1038/nature10382. PMID 21892190.  编辑
  6. ^ 6.0 6.1 Smith, S. A.; Wilson, N. G.; Goetz, F. E.; Feehery, C.; Andrade, S. N. C. S.; Rouse, G. W.; Giribet, G.; Dunn, C. W. Resolving the evolutionary relationships of molluscs with phylogenomic tools. Nature. 2011, 480 (7377): 364–367. doi:10.1038/nature10526. PMID 22031330.  编辑
  7. ^ Sigwart, J. D.; Sutton, M. D. Deep molluscan phylogeny: synthesis of palaeontological and neontological data. Proceedings of the Royal Society B: Biological sciences. Oct 2007, 274 (1624): 2413–2419. doi:10.1098/rspb.2007.0701. PMC 2274978. PMID 17652065.  For a summary, see The Mollusca. University of California Museum of Paleontology. [2 October 2008].  编辑
  8. ^ Scheltema, A.H. Aplacophora as Progenetic Aculiferans and the Coelomate Origin of Mollusks as the Sister Taxon of Sipuncula. The Biological Bulletin. 1 February 1993, (184): 57–78. JSTOR 1542380. 
  9. ^ Vinther, J.; Sperling, E. A.; Briggs, D. E. G.; Peterson, K. J. A molecular palaeobiological hypothesis for the origin of aplacophoran molluscs and their derivation from chiton-like ancestors. Proceedings of the Royal Society B: Biological Sciences. 2011. doi:10.1098/rspb.2011.1773.  编辑