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New azooxanthellate genus of Scleractinia (Flabellidae) from the Australian Cenozoic

  • Stephen D. Cairns (a1)

A new genus of flabellid scleractinian coral, Periplacotrochus, is described from the late Eocene to middle Miocene of Victoria, South Australia, and Tasmania. It differs from Placotrochus in having a pedicellate base, and from Flabellum in having a lamellar columella. Six previously described species are redescribed, illustrated, and reassigned to this genus (P. deltoideus Duncan, 1864, P. corniculatus Dennant, 1899, P. elongatus Duncan, 1864, P. pueblensis Dennant, 1903, P. inflectus Dennant, 1903, and P. magnus Dennant, 1904), and one new species is described: P. cudmorei. One species, Placotrochus elegans Tennison-Woods, 1878a, is considered as a nomen dubium. A key is provided to the seven species placed in this genus.

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S.D. Cairns , 1999, Species richness of Recent Scleractinia: Atoll Research Bulletin, v. 459, p. 112.

S.D. Cairns , 2016, A key to the genera and species of the transversely-dividing Flabellidae (Anthozoa, Scleractinia, Flabellidae), with a guide to the literature, and the description of two new species: ZooKeys, v. 562, p. 148.

S.D. Cairns , and M.V. Kitahara , 2012, An illustrated key to the genera and subgenera of the Recent azooxanthellate Scleractinia (Cnidaria, Anthozoa), with an attached glossary: ZooKeys, v. 227, p. 147.

P.M. Duncan , 1870, On the fossil corals (Madreporaria) of the Australian Tertiary deposits: Quarterly Journal of the Geological Society of London, v. 26, p. 284318.

M.V. Kitahara , S.D. Cairns , J. Stolarski , D. Blair , and D.J. Miller , 2010, A comprehensive phylogenetic analysis of the Scleractinia (Cnidaria, Anthozoa) based on mitochondrial CO1 sequence data: PLoS One, 5, e11490 doi:10.1371/journal.pone0011490.

T.W. Vaughan , and J.W. Wells , 1943, Revision of the Suborders, Families, and Genera of the Scleractinia: Geological Society of America Special Paper, v. 44, p.xv 1363.

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Journal of Paleontology
  • ISSN: 0022-3360
  • EISSN: 1937-2337
  • URL: /core/journals/journal-of-paleontology
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