Homoscleromorpha are exclusively marine sponges that tend to encrust on other surfaces at shallow depths. The order is composed of two families: Plakinidae and Oscarellidae. Homoscleromorpha is now recognized as the fourth class of sponges. Highly simplified overview of porifera phylogeny based in part on the hypothesis of relationships presented by, Homoscleromorpha. Palaeoworld: 27, pp. Presentan lámina basal que delimita las capas internas (tejidos). Stromatoporoidea Homoscleromorpha ←. Center image by: 'Waielbi' (Wikimedia Commons; Creative Commons Attribution-Share Alike 3.0 Public Domain Dedication). Creative Commons Attribution-ShareAlike 4.0 International License. Las Homoscleromorpha se caracterizan por presentar un esqueleto variable (con o sin espículas de silíce). This form is usual in calcareous sponges but is less common in other sponges. In: Maldonado M, Turon X, Becerro MA, Uriz MJ (eds) Ancient Animals, New Challenges. Files are available under licenses specified on their description page. However due to advances in using genetic data to reconstruct sponge phylogeny, this newly recognized clade was discovered. It is the only order in the monotypic class Homoscleromorpha. A sea cucumber on a chicken liver sponge (Plakortis sp.) This might suggest that under-explored areas and cryptic habitats might just be where these unique sponges thrive (Gerovasileiou and Voultsiadou, 2012). Las Homoscleromorpha se caracterizan por presentar un esqueleto variable (con o sin espículas de silíce). This page was written by Jaleigh Q. Pier. A few preserved spicules from the Carboniferous could potentially be from a homoscleromorph sponge, but definitive records are only known from the Mesozoic. Spicule image by Jaleigh Q. Pier is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. View Google Privacy Policy. A few preserved spicules from the Carboniferous could potentially be from a homoscleromorph sponge, but definitive records are only known from the Mesozoic. Unless otherwise indicated, the written and visual content on this page is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. Image by: Nick Hobgood (Wikimedia Commons; Creative Commons Attribution-Share Alike 3.0 Public Domain Dedication). Highly simplified overview of porifera phylogeny based in part on the hypothesis of relationships presented by Botting and Muir (2018). [10], Sperling, Pisani and Peterson 2007, cited in: The Cambrian Explosion p. 80, Erwin and Valentine 2013. Hexactinellida Right image by: Philippe Bourjon (Wikimedia Commons; Creative Commons Attribution-Share Alike 4.0 Public Domain Dedication). –– 6. Homosclerophorida is an order of marine sponges. All structured data from the file and property namespaces is available under the Creative Commons CC0 License; all unstructured text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. PLoS ONE: 7(4), pp. Creative Commons Attribution-ShareAlike 4.0 International License, Creative Commons Attribution-Share Alike 2.0 Generic License, Integrative and Comparative Biology,  53(3), pp. The order is composed of two families: Plakinidae and Oscarellidae. Original caption: "A. Oscarella lobularis (Oscarellidae): two color morphs from NW Mediterranean Sea (photos courtesy of Jean Vacelet & Thierry Pérez); B. Plakortis simplex (Plakinidae) specimen hanging from the ceiling of the 3PPs cave (NW Mediterranean Sea), a paradise for Homoscleromorpha species (at least 8 species belonging to 4 different genera are present); red arrow indicates the presence of Oscarella microlobata and a green arrow Plakina jani (photo courtesy Thierry Pérez); C. Plakina jani (Plakinidae) detail of the lobes, 3PPs cave (NW Mediterranean Sea) (photo courtesy Jean Vacelet); D. Spicules of Plakinidae: triods, diods and lophose calthrops; E. Spicules of Corticium candelabrum (Plakinidae): calthrops and candelabrum (heterolophose calthrops); F. Corticium candelabrum NW Mediterranean Sea (photos courtesy of Jean Vacelet)." Laumer, C. E., Fernández, R., Lemer, S., Combosch, D., Kocot, K. M., Riesgo, A., Andrade, S. C. S., Sterrer, W., Sørensen, M. V., & Giribet, G. (2019). Global Diversity of Sponges (Porifera). It is the only order in the monotypic class Homoscleromorpha. These sponges typically inhabit shady locations, under overhangs and inside caves. Calcarea The Integrative Taxonomic Approach Applied to Porifera: A Case Study of the Homoscleromorpha, Integrative and Comparative Biology,  53(3), pp. Although they are very similar, Plakinidae have structural spicules while Oscarellidae are spicule-free. [5][6], It has been suggested that Homoscleromorpha are more closely related to eumetazoans than to the other sponge groups, rendering sponges paraphyletic. Archaeocyatha –– 1. Deep metazoan phylogeny: When different genes tell different stories. Actualmente son consideradas como una clase aparte, y se reconoce un único orden: Homosclerophorida Dendy, 1905. [5], There are 117 species in this group divided into 9 genera.[6].