Myxillidae Dendy 1922

• Main Author: Łukowiak, Magdalena
• Format: Text
• Language: unknown
• Published: Zenodo 2015
• Subjects: Biodiversity; Taxonomy; Animalia; Porifera; Demospongiae; Poecilosclerida; Myxillidae; Indian; Jura; Percy; Sladen; Arktis*; Spitzbergen
• Online Access: https://dx.doi.org/10.5281/zenodo.6108597; https://zenodo.org/record/6108597

Family Myxillidae Dendy, 1922 Rare acanthostyles with echinated surfaces along the spicule (Figs. 19 Q–S) or only with a echinated pointed end (Fig. 19 T) occur in the studied samples. Such mucronate spicules characterize sponges of the family Myxillidae [e.g., Hymenancora orientalis Koltun, 1959; Myxilla (Styloptilon) ancorata (Cabioch, 1968)]. One can find, however, similar spicules in the family Crellidae [e.g., Crellomima incrustans Hentschel (1929)], Raspailiidae, Microcionidae, and Hymedesmiidae but still, those discussed here resemble most the myxillid spicules. The lack of other spicules, like chelae or sigma microscleres that would allow for more precise placement within the family Myxillidae, permits their determination only to a family level. Moreover, myxyllids are noted today from all over Australia (Atlas of Living Australia). The spicules of similar morphology are also known from the fossil record. For example, they were described by Schrammen (1924, pl. 4, figs. 54, 55) from the Cretaceous of Germany and Mostler (1990, pl. 1, figs. 5–7) from the Jurassic of Austrian Alps. : Published as part of Łukowiak, Magdalena, 2015, Late Eocene siliceous sponge fauna of southern Australia: reconstruction based on loose spicules record, pp. 1-65 in Zootaxa 3917 (1) on page 36, DOI: 10.11646/zootaxa.3917.1.1, http://zenodo.org/record/287785 : {"references": ["Dendy, A. (1922) Report on the Sigmatotetraxonida collected by H. M. S. ' Sealark' in the Indian Ocean. In: Reports of the Percy Sladen Trust Expedition to the Indian Ocean in 1905, 7. Transactions of the Linnean Society of London, 18 (1), pp. 1 - 164. http: // dx. doi. org / 10.1111 / j. 1096 - 3642.1922. tb 00547. x", "Koltun, V. M. (1959) Siliceous horny sponges of the northern and fareastern seas of the U. S. S. R., Zoologicheskim Muzeem Akademii Nauk, 67, 1 - 236. [in Russian]", "Cabioch, L. (1968) Contribution a la connaissance de la faune des Spongiaires de la Manche occidentale. Demosponges de la region de Roscoff. Cahiers de Biologie Marine, 9, 211 - 246.", "Hentschel, E. (1929) Die Kiesel- und Hornschwamme des Nordlichen Eismeers. In: Romer, F., Schaudinn, F., Brauer, A. & Arndt, W. (Eds.), Fauna Arctica. Eine Zusammenstellung der arktischen Tierformen mit besonderer Berucksichtigung des Spitzbergen-Gebietes auf Grund der Ergebnisse der Deutschen Expedition in das Nordliche Eismeer im Jahre 1898, 5 (4), Fischer, Jena, pp. 857 - 1042.", "Schrammen, A. (1924) Die Kieselspongien der oberen Kreide von Nordwestdeutschland. III und letzter Teil. Mit Beitragen zur Stammesgeschichte. Monographien zur Geologie und Palaontologie, 1, 1 - 159. [Stuttgart]", "Mostler, H. (1990) Mikroskleren von Demospongien (Porifera) aus dem basalen Jura der Nordlichen Kalkalpen. Geologisch- Palaontologische Mitteilungen Insbruck, 17, 119 - 142."]}