Belongs within: Diaphoretickes.
The Ischyrospongia were originally recognised as a grouping of hypercalcified sponges including the sclerosponges and stromatoporoids. Some subsequent authors have also placed a number of Palaeozoic microfossils of uncertain affinities within this taxon. These include the Moravamminida in which the test is divided by septa or pseudosepta and has a calcareous, hyaline wall. The Claracrustinae form encrusting colonies with skeletal elements composed of large horizontal laminae and sometimes vertical pillars (Vachard et al. 2001).
<==Ischyrospongia
| i. s.: Eflugelia johnsoni (Flügel 1966) Vachard in Massa & Vachard 1979VH01
| Chovashovia densifolia Vachard 1980VH01
| Evlaniopsis montana Vachard 1980VH01
| Wetheredellidae [Wetheredellaceae]MSV00
| |--Asphaltinoides Devera 1987MSV00
| |--Koskinobullina Cherchi & Schroeder 1979MSV00
| `--Wetheredella Wood 1948VH01
| `--*W. silurica Wood 1948LT64b
|--PalaeosiphonocladalesVH01
|--AoujgaliidaVH01
| |--Amorfia Racz 1965VH01
| `--Aoujgalia Termier & Termier 1950LT64a
| `--*A. variabilis Termier & Termier 1950LT64a
`--Moravamminida [Moravamminacea]VH01
|--Ungdarella Maslov 1956 [Ungdarellidae]VH01
| `--U. uralicaVH01
|--Moravamminidae [Moravammininae]LT64a
| |--Turrispiroides Reytlinger in Rauzer-Chernousova & Fursenko 1959 (see below for synonymy)LT64a
| | `--*T. mira (Reytlinger 1950) [=*Turrispira mira]LT64a
| `--Moravammina Pokorný 1951 [incl. Litya Bykova in Bykova & Polenova 1955]LT64a
| |--*M. segmentata Pokorný 1951LT64a
| `--M. sizranensis (Bykova in Bykova & Polenova 1955) [=*Litya sizranensis]LT64a
`--DonezellidaeVH01
|--DonezellinaeVH01
`--ClaracrustinaeVH01
| i. s.: ‘Ungdarella’ peratrovichensis Mamet & Rudloff 1972VH01
|--Berestovia Berchenko 1982VH01
|--Stacheoidella Mamet & Roux in Mamet et al. 1987VH01
|--Iberiaella Racz 1984VH01
|--Kleinbergella Mamet & Boulvain 1992VH01
|--Pseudostacheoides Petryk & Mamet 1972VH01
`--Claracrusta Vachard 1980VH01
|--*C. catenoides (Homann 1972) [=Girvanella catenoides]VH01
|--C. claracrustaVH01
|--C. hirtipesVH01
`--C. ungdarelloidea Vachard, Hauser et al. 2001VH01
Turrispiroides Reytlinger in Rauzer-Chernousova & Fursenko 1959 [=Turrispira Reytlinger 1950 nec Conrad 1866 nec Petho 1906]LT64a
*Type species of generic name indicated
References
[LT64a] Loeblich, A. R., Jr & H. Tappan. 1964a. Sarcodina: chiefly “thecamoebians” and Foraminiferida. In: Moore, R. C. (ed.) Treatise on Invertebrate Paleontology pt C. Protista 2 vol. 1. The Geological Society of America and The University of Kansas Press.
[LT64b] Loeblich, A. R., Jr & H. Tappan. 1964b. Sarcodina: chiefly “thecamoebians” and Foraminiferida. In: Moore, R. C. (ed.) Treatise on Invertebrate Paleontology pt C. Protista 2 vol. 2. The Geological Society of America and The University of Kansas Press.
[MSV00] Munnecke, A., T. Servais & D. Vachard. 2000. A new family of calcareous microfossils from the Silurian of Gotland, Sweden. Palaeontology 43 (6): 1153–1172.
[VH01] Vachard, D., M. Hauser, R. Martini, L. Zaninetti, A. Matter & T. Peters. 2001. New algae and problematica of algal affinity from the Permian of the Aseelah Unit of the Batain Plain (East Oman). Geobios 34 (4): 375–404.