WoRMS name details
Holocoenia Milne Edwards & Haime, 1850 †
1511258 (urn:lsid:marinespecies.org:taxname:1511258)
uncertain > taxon inquirendum
Genus
- Species Holocoenia cesaredensis Koby, 1904 †
- Species Holocoenia indica Stoliczka, 1873 †
- Species Holocoenia micrantha (Roemer, 1841) †
- Species Holocoenia ramosa Stoliczka, 1873 †
- Species Holocoenia stellata von Fritsch, 1878 † accepted as Stylophora stellata (von Fritsch, 1878) † (basionym, changed combination)
marine, fresh, terrestrial
fossil only
Milne Edwards H, Haime J. (1850-1854). A monograph of the British fossil Corals. The Palaeontographical Society, London. <em>Monographs of the Palaeontographical Society.</em> 1 : i-lxxxv, 1-72, pls. 1-11; 2: 73-146, pls. 12-30; 3: 147-210, pls. 31-46; 4: i-xvi, 211-244, pls. 47-56; 5: 245-322, pls. 57-72., available online at https://www.biodiversitylibrary.org/page/12089108 [details]
Hoeksema, B. W.; Cairns, S. (2024). World List of Scleractinia. Holocoenia Milne Edwards & Haime, 1850 †. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1511258 on 2024-09-19
The webpage text is licensed under a Creative Commons Attribution 4.0 License
original description
Milne Edwards H, Haime J. (1850-1854). A monograph of the British fossil Corals. The Palaeontographical Society, London. <em>Monographs of the Palaeontographical Society.</em> 1 : i-lxxxv, 1-72, pls. 1-11; 2: 73-146, pls. 12-30; 3: 147-210, pls. 31-46; 4: i-xvi, 211-244, pls. 47-56; 5: 245-322, pls. 57-72., available online at https://www.biodiversitylibrary.org/page/12089108 [details]
additional source Duncan PM (1884) A revision of the families and genera of the sclerodermic Zoantharia, Ed. & H., or Madreporaria (M. Rugosa excepted). Journal of the Linnean Society of London, 18: 1-204. [details]
additional source Duncan PM (1884) A revision of the families and genera of the sclerodermic Zoantharia, Ed. & H., or Madreporaria (M. Rugosa excepted). Journal of the Linnean Society of London, 18: 1-204. [details]
From editor or global species database
Remark The original description of Holocoenia by Milne Edwards and Haime (1851) is rather insufficient in that it only consisted of the remarks that this taxon differed from Thamnasteria in having a prominent styliform columella and entire septa. As a consequence from this definition, Holocoenia would have to show all characteristics of Thamnasteria with the exception of these two features, which would make Holocoenia a genus that is characterized by thamnasterioid polyp integration; extra- and intracalicinal budding; (non-costate) compact and confluent, entire septa; a prominent styliform columella; vesicular and tabulate endothecal dissepiments; either no wall or an incomplete synapticulotheca present (see Roniewicz, 1982, and Bertling, 1993, for information on Thamnasteria). In 1857, de Fromentel provided the first more extensive description based on non-type material, in which he included the presence of characteristics like ‘septocostae strongly granulated laterally’, ‘corallites united by their walls, appearing polygonal, and ‘septa developed in 2 with a beginning third cycle'; the first two characteristics of which would have to be considered as differing from the generic concept by Milne Edwards and Haime. Recently, a revision on Holocoenia was carried out by Löser (2009). According to him, the holotype of the type species was lost and the type locality did not exist anymore. In his revision, Löser gave a generic description of Holocoenia, following both the model by Milne Edwards and Haime, 1851, and the emended version provided by de Fromentel, 1857. He gave the following generic diagnosis for Holocoenia based on non-type material from a locality other than the type locality: “Cerioid colony with small calices. Septa compact, in radial symmetry, and always in two generations. Septal face with few granules. Wall incomplete, made of synapticulae and septa. Columella styliform. Endotheca present, made of thin dissepiments. Budding extracalicinal. Septal microstructure unknown.” In addition, Löser included material that has both costate and non-confluent septa, and shows incomplete septothecal walls. That means that his material differs from both of the generic concepts he says he is following: 1) In having a cerioid polyp integration, only extracalicinal budding, both costate and septothecal developments, the presence of non-confluent septa, and an unknown septal structure, it differs from the generic concept by Milne Edwards and Haime and, in addition, is inconclusive regarding one of the most important features defined by Milne Edwards and Haime--entire septa--- in their original diagnosis for Holocoenia; 2) In having a maximum of 2 cycles of septa, that are not only confluent but also non-confluent, and are strongly granulated laterally, it differs from the emended version provided by de Fromentel. In addition, Löser (2009) grouped the genera Stereocoenia Alloiteau, 1952 (=genus originally placed in the Thamnasteriidae) and Paretallonia Sikharulidze, 1972 (=genus originally placed in the Acroporidae), as junior synonyms of the genus Holocoenia. Moreover, he placed Holocoenia in the Thamnasteriidae. However, because of the fact that Milne Edwards and Haime mentioned in their original description that Holocoenia had ‘entire septa’, excludes this genus from the family Thamnasteriidae, which, consequently, excludes Stereocoenia from the synonymy with Holocoenia. In addition, because Löser’s revision is based on 1) non-type material from localities other than the type locality (for Holocoenia micrantha), that 2) is in contradiction to both of the taxonomic models he is following, and 3) lacks the very necessary re-study of the type material of both Stereocoenia Alloiteau, 1952, and Paretallonia Sikharulidze, 1972, it can only be concluded that: a) Holocoenia is an unrecognizable taxon which makes any decision regarding any junior synonyms impossible, b) the taxonomic position of the material described in Löser (2009) remains unk [details]