Oscarella Vosmaer, 1884

Ruiz, Cesar, Ereskovsky, Alexander & Perez, Thierry, 2022, New Skeleton-Less Homoscleromorphs (Porifera, Homoscleromorpha) From The Caribbean Sea: Exceptions To Rules Are Definitely Common In Sponge Taxonomy, Zootaxa 5200 (2), pp. 128-148 : 138

Genus Oscarella Vosmaer, 1884

Diagnosis: Homosclerophorida without skeleton, with a variable development of the ectosome with a collagen layer between ecto- and choanosome. The aquiferous system has a sylleibid-like or leuconoid organization, with spherical to ovoid eurypilous or diplodal choanocyte chambers arranged around large exhalants canals ( Muricy & Díaz 2002). Mitochondrial genomes that have been sequenced so far encode a gene absent in other animal mitochondrial genomes: tatC ( Ereskovsky et al. 2017).