Belongs within: Vetigastropoda.
The Eotomariinae are a group of gastropods known from the Middle Ordovician to Permian. The type genus Eotomaria has a sublenticular, minutely phaneromphalous shell with a deep sinus culminating in a short slit (Knight et al. 1960).
Characters (Knight et al. 1960): Labral slit moderate to deep, umbilicus narrow or absent; ornament collabral and spiral elements, collabral dominant.
<==Eotomariinae
|--Deseretospira Gordon & Yochelson 1987 [Deseretospirides, Deseretospirini]BR05
| `--*D. monilifera Gordon & Yochelson 1987BR17
|--Glabrocingulum Thomas 1940 [Glabrocingulides, Glabrocingulini]BR05
| `--*G. beggi Thomas 1940KC60
`--Eotomariini [Eotomariides, Liospirinae]BR05
|--Pseudobaylea Dickins 1963W63
| `--*P. freneyensis Dickins 1963 [=Mourlonia (Pseudobaylea) freneyensis]W63
|--Arastra Stoyanow 1948KC60
| `--*A. torquata Stoyanow 1948KC60
|--Bembexia Oehlert & Oehlert 1888KC60, FB04
| |--*B. larteti (Munier-Chalmas 1876) [=Pleurotomaria larteti]KC60
| `--B. sulcomarginataB12
|--Eotomaria Ulrich & Scofield 1897BR05 [incl. Spiroraphe Perner 1907KC60]
| |--*E. sublaevis Ulrich 1897BR17
| `--E. canalifera Ulrich in Ulrich & Scofield 1897KC60
|--Liospira Ulrich & Scofield 1897BR05 [incl. Eocryptaenia Koken 1925KC60]
| |--*L. micula (Hall 1862) [=Pleurotomaria micula]KC60
| |--L. angustata Ulrich & Scofield 1897YN83
| |--L. kailiensis Yu 1974XY90
| `--L. kulukedageensis Yu & Xi 1995YX95
|--Clathrospira Ulrich & Scofield 1897 [incl. Palaeoschisma Donald 1902]KC60
| |--*C. subconica (Hall 1847) [=Pleurotomaria subconica]KC60
| |--C. angulata Yu & Ning 1983YN83
| |--C. conicaYN83
| `--C. obscura (Hynda 1986)D94
`--Ananias Knight 1945KC60
|--*A. welleri (Newell 1935)PE02 [=Phanerotrema welleriPE02, Glabrocingulum (*Ananias) welleriKC60]
|--A. alticonica (Wang in Wang & Xi 1980) [=Guizhouspira alticonica]PE02
|--A. campbelli (Waterhouse 1963) [=Glabrocingulum (Ananias) campbelli]W63
|--A. gibber Chronic 1952W63
|--A. guojiashanensis Tong & Erwin 2001TE01
|--A. johannisaustriae (Klipstein 1843) (see below for synonymy)TE01
`--A. wannense (Newell 1935)W63
Ananias johannisaustriae (Klipstein 1843) [=Pleurotomaria johannisaustriae, A. joannisaustriae (l. c.); incl. Worthenia apunctata Kittl 1894]TE01
*Type species of generic name indicated
References
[BR05] Bouchet, P., & J.-P. Rocroi. 2005. Classification and nomenclator of gastropod families. Malacologia 47 (1–2): 1–397.
[BR17] Bouchet, P., J.-P. Rocroi, B. Hausdorf, A. Kaim, Y. Kano, A. Nützel, P. Parkhaev, M. Schrödl & E. E. Strong. 2017. Revised classification, nomenclator and typification of gastropod and monoplacophoran families. Malacologia 61 (1–2): 1–526.
[B12] Brett, C. E. 2012. Coordinated stasis reconsidered: a perspective at fifteen years. In: Talent, J. A. (ed.) Earth and Life: Global biodiversity, extinction intervals and biogeographic perturbations through time pp. 23–36. Springer.
[D94] Dzik, J. 1994. Evolution of ‘small shelly fossils’ assemblages of the early Paleozoic. Acta Palaeontologica Polonica 39 (3): 247–313.
[FB04] Frýda, J., & R. B. Blodgett. 2004. New Emsian (Late Early Devonian) gastropods from Limestone Mountain, Medfra B-4 quadrangle, west-central Alaska (Farewell Terrane), and their paleobiogeographic affinities and evolutionary significance. Journal of Paleontology 78 (1): 111–132.
[KC60] Knight, J. B., L. R. Cox, A. M. Keen, R. L. Batten, E. L. Yochelson & R. Robertson. 1960. Gastropoda: systematic descriptions. In: Moore, R. C. (ed.) Treatise on Invertebrate Paleontology pt I. Mollusca 1: Mollusca—General Features, Scaphopoda, Amphineura, Monoplacophora, Gastropoda—General Features, Archaeogastropoda and some (mainly Paleozoic) Caenogastropoda and Opisthobranchia pp. I169–I331. Geological Society of America, and University of Kansas Press.
[PE02] Pan, H.-Z., & D. H. Erwin. 2002. Gastropods from the Permian of Guangxi and Yunnan Provinces, south China. Journal of Paleontology 76 (Memoir 56): 1–49.
[TE01] Tong, J., & D. H. Erwin. 2001. Triassic gastropods of the southern Qinling Mountains, China. Smithsonian Contributions to Paleobiology 92: 1–47.
[W63] Waterhouse, J. B. 1963. Permian gastropods of New Zealand. Part 3—Pleurotomariacea (concluded). New Zealand Journal of Geology and Geophysics 6 (4): 587–622.
[XY90] Xi Y.-H., & Yu W. 1990. New materials of Silurian gastropods from SW. China. Acta Palaeontologica Sinica 29 (5): 612–622.
[YN83] Yu W. & Ning H. 1983. Middle Ordovician gastropods from Ruoqiang, Xinjiang. Acta Palaeontologica Sinica 22 (2): 199–203.
[YX95] Yu W. & Xi Y.-H. 1995. Ordovician-Devonian gastropods from Bachu and Kalpin districts, Xinjiang. Acta Palaeontologica Sinica 34 (4): 488–494.