Belongs within: Tetractinellida.
The Ancorinidae are a diverse and poorly-defined group of demosponges with major spicules composed of oxeas (rods terminally tapering to a point) and/or triaenes (rods with ends divided into three). Many species exhibit characteristic growth forms.
Characters (Uriz 2002): Skeleton with long-rhabdome triaenes, which may be reduced or absent, and oxeas. Microscleres are euasters, sanidasters or microrhabds.
Ancorinidae [Stellettidae]
|--Psammastra conulosa Kieschnick 1896MC15, BJ06
|--Pachamphilla dendyi Hentschel 1912BJ06
|--Holoxea valida Thiele 1900MC15, BJ06
|--Ancorina cordicata (Carter 1879)MC15, W04
|--Asteropus simplex (Carter 1879)MC15, MG-H11
|--TethyopsisMC15
|--TribrachiumMC15
|--ChelotropellaMC15
|--CryptosyringaMC15
|--DercitusMC15
|--Disyringa dissimilis (Ridley 1884)FS14
|--StellettinopsisMC15
|--Stryphnus pondersosus (Bowerbank 1866)MC15, C94
|--Oppligera clavaeformis (Oppliger 1921)RB93
|--EcionemiaMC15
| |--E. cinerea Thiele 1900BJ06
| `--E. cribrosa Thiele 1900BJ06
|--JaspisMC15
| |--J. splendens (de Laubenfels 1954)FV09
| `--J. topsenti Thiele 1900BJ06
`--Stelletta Schmidt 1862 [incl. Anthastra Sollas 1886, Myriastra Sollas 1886, Pilochrota Sollas 1886]BJ06
|--S. aruensis Hentschel 1912BJ06
|--S. aspera Kieschnick 1896K96
|--S. brunnea Thiele 1900 [=S. (Pilochrota) brunnea]BJ06
|--S. clavosa Ridley 1884MG-H11 [=Myriastra clavosaK96]
|--‘Pilochrota’ crassispiculaK96
|--S. debilis Thiele 1900 [=S. (Myriastra) debilis]BJ06
|--S. lobata Kieschnick 1896K96
|--S. normani Sollas 1880C94
|--S. porosa Kieschnick 1896K96
|--S. reniformis Kieschnick 1896K96
|--S. sphaeroides Kieschnick 1896K96
|--S. splendens Tanita 1965FS14
|--S. stellifera Kieschnick 1896K96
|--‘Myriastra’ subtilisK96
|--‘Pilochrota’ tenuispiculaK96
|--S. ternatensis Thiele 1900 [=S. (Myriastra) ternatensis]BJ06
|--S. truncata Kieschnick 1896K96
`--S. variohamata Thiele 1900 [=S. (Anthastra) variohamata]BJ06
*Type species of generic name indicated
References
[BJ06] Barnich, R., & D. Janussen. 2006. Die Typen und Typoide des Naturmuseums Senckenberg, Nr. 86. Type catalogue of the Porifera in the collections of the Senckenberg Museum in Frankfurt am Main, Germany. Senckenbergiana Biologica 86 (2): 127–144.
[C94] Cedhagen, T. 1994. Taxonomy and biology of Hyrrokkin sarcophaga gen. et sp. n., a parasitic foraminiferan (Rosalinidae). Sarsia 79: 65–82.
[FS14] Fromont, J., & A. Sampey. 2014. Kimberley marine biota. Historical data: sponges (Porifera). Records of the Western Australian Museum Supplement 84: 69–100.
[FV09] Fromont, J., & M. A. Vanderklift. 2009. Porifera (sponges) of Mermaid, Scott and Seringapatam Reefs, north Western Australia. Records of the Western Australian Museum Supplement 77: 89–103.
[K96] Kieschnick, O. 1896. Silicispongiae von Ternate nach den Sammlungen von Herrn Prof. Dr. W. Kükenthal. Zoologischer Anzeiger 19: 526–534.
[MG-H11] McEnnulty, F. R., K. L. Gowlett-Holmes, A. Williams, F. Althaus, J. Fromont, G. C. B. Poore, T. D. O’Hara, L. Marsh, P. Kott, S. Slack-Smith, P. Alderslade & M. V. Kitahara. 2011. The deepwater megabenthic invertebrates on the western continental margin of Australia (100–1100 m depths): composition, distribution and novelty. Records of the Western Australian Museum Supplement 80: 1–191.
[MC15] Morrow, C., & P. Cárdenas. 2015. Proposal for a revised classification of the Demospongiae (Porifera). Frontiers in Zoology 12: 7.
[RB93] Rigby, J. K., G. E. Budd, R. A. Wood & F. Debrenne. 1993. Porifera. In: Benton, M. J. (ed.) The Fossil Record 2 pp. 71–99. Chapman & Hall: London.
Uriz, M. J. 2002. Family Ancorinidae Schmidt, 1870. In: Hooper, J. N. A., & R. W. M. Van Soest. 2002. Systema Porifera: A guide to the classification of sponges pp. 108–126. Kluwer Academic/Plenum Publishers: New York.
[W04] Williams, J. D. 2004. Reproduction and morphology of Polydorella (Polychaeta: Spionidae), including the description of a new species from the Philippines. Journal of Natural History 38: 1339–1358.