Belongs within: Glyptocystitida.
The Callocystitidae are a group of Upper Ordovician to Upper Devonian cystoids distinguished from related groups by their particularly long ambulacra.
Characters (from Kesling 1967): Rhombiferan cystoids provided with distinct pectinirhombs; periproct relatively small, not produced; theca ovate, globular, biconvex, or ellipsoidal, not spindle-shaped or resembling a pentremite; rhombs relatively few, rarely developed as demirhombs; ambulacra long, extending down over theca; column present.
<==Callocystitidae [Callocystidae]
|--Staurocystinae K67
| |--Staurocystis Haeckel 1896 K67
| | `--*S. quadrifasciata (Pearce 1843) [=Pseudocrinites quadrifasciatus] K67
| `--Pseudocrinites Pearce 1842 (see below for synonymy) K67
| |--*P. bifasciatus Pearce 1842 (see below for synonymy) K67
| |--P. gordoni [incl. P. abnormalis] K67
| |--P. magnificus K67
| `--P. perdewi [incl. *Trimerocystis peculiaris Schuchert 1904] K67
|--Callocystitinae [Callocystinae] K67
| |--Coelocystis Schuchert 1903 K67
| | `--*C. subglobosa (Hall 1867) (see below for synonymy) K67
| |--Sphaerocystites Hall 1859 [=Sphaerocystis Carpenter 1891] K67
| | |--*S. multifasciatus Hall 1859 [=*Sphaerocystis multifasciatus] K67
| | `--S. globularis K67
| `--Callocystites Hall 1852 [=Callocystis Carpenter 1891; incl. Anthocystis Haeckel 1896] K67
| |--*C. jewetti Hall 1852 [=*Callocystis jewetti] K67
| | |--C. j. jewetti K67
| | `--C. j. elongatus K67
| |--C. canadensis K67
| `--‘*Anthocystis’ halliana Haeckel 1896 K67
`--Apiocystitinae [Apiocystinae] K67
|--Hallicystis Jaekel 1899 K67
| `--*H. imago (Hall 1864) [=Apiocystites imago] K67
|--Lepadocystis Carpenter 1891 [=Meekocystis Jaekel 1899] K67
| `--*L. moorei (Meek 1871) [=Lepocrinites moorei, Lepadocrinites (l. c.) moorei, *Meekocystis moorei] K67
|--Lipsanocystis Ehlers & Leighley 1922 K67
| `--*L. traversensis Ehlers & Leighley 192 K67
|--Lovenicystis Regnéll 1945 K67
| `--*L. angelini (Jaekel 1899) [=Apiocystites angeli, Lepadocrinus angelini Haeckel 1896 (n. n.)] K67
|--Tetracystis Schuchert 1904 K67
| |--*T. fenestrata Schuchert 1904 [=Echinoencrinites fenestratus Troost 1849 (n. n.)] K67
| `--T. chrysalis K67
|--Apiocystites Forbes 1848 [=Apiocystis Bather 1889] K67
| |--*A. pentrematoides Forbes 1848 [=*Apiocystis pentrematoides] K67
| |--A. anna K67
| `--A. elegans K67
|--Lepocrinites Conrad 1840 [=Lepadocrinites Billings 1854, Lepadocrinus Hall 1859, Lepocrinus Hall 1859] K67
| |--*L. gebhardii Conrad 1840 (see below for synonymy) K67
| |--L. manlius K67
| `--L. oblongus K67
|--Jaekelocystis Schuchert 1903 K67
| |--*J. hartleyi Schuchert 1903 K67
| |--J. avellana K67
| `--J. papillata K67
|--Brockocystis Foerste 1914 K67
| |--*B. tecumsethi (Billings 1866) [=Apiocystites tecumsethi] K67
| |--B. huronensis K67
| `--B. nodosaria K67
`--Strobilocystites White 1876 [=Strobilocystis Carpenter 1891] K67
|--*S. calvini White 1876 [=*Strobilocystis calvini] K67
|--S. polleyi K67
`--S. schucherti K67
*Coelocystis subglobosa (Hall 1867) [=Hemicosmites subglobosus; incl. Sphaerocystis dolomiticus Jaekel 1899, Callocystites sphaeroidalis Foerste 1917] K67
*Lepocrinites gebhardii Conrad 1840 [=*Lepadocrinites gebhardii, *Lepadocrinus gebhardii, *Lepocrinus gebhardii] K67
Pseudocrinites Pearce 1842 [=Phacocystis Haeckel 1896, Pseudocrinus Haeckel 1896 non Geinitz 1846; incl. Trimerocystis Schuchert 1904] K67
*Pseudocrinites bifasciatus Pearce 1842 [=*Phacocystis bifasciata, *Pseudocrinus bifasciatus; incl. Pseudocrinites bicopuladigiti Garner 1844] K67
*Type species of generic name indicated
REFERENCES
[K67] Kesling, R. V. 1967. Cystoids. In Treatise on Invertebrate Paleontology pt. S. Echinodermata 1. General characters. Homalozoa-Crinozoa (except Crinoidea) (R. C. Moore, ed.) vol. 1 pp. S85-S267. The Geological Society of America, Inc., and The University of Kansas: Lawrence (Kansas).
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