Thlipsuridae

Thlipsura robusta, right valve, from Benson et al. (1961).

Belongs within: Metacopina.

The Thlipsuridae are a group of ostracods known from the Silurian and Devonian periods (Whatley et al. 1993).

Characters (from Benson et al. 1961): Carapace subovate to elongate-subelliptical in lateral view, subelliptical to subquadrate in dorsal view; dorsal border convex; ventral border nearly straight or, in some species, slightly concave; ends round or subround; valves unequal, in known species, left valve overreaching right valve on all margins, overlap slight; lateral surfaces convex except for pits, furrows, or depressed areas and posterior end of carapace, which is characteristically compressed.

<==Thlipsuridae BB61
    |--Conbathella inornata Copeland 1974 WSB93
    |--Eustephanella Swartz & Swain 1942 [incl. Eustephanus Swartz & Swain 1941 non Reichenbach 1849] BB61
    |    `--*E. catastephanes (Swartz & Swain 1941) [=Eustephanus catastephanes] BB61
    |--Favulella Swartz & Swain 1941 BB61
    |    `--*F. favulosa (Jones 1889) [=Bythocypris favulosa] BB61
    |--Hyphasmaphora Van Pelt 1933 BB61
    |    `--*H. textiligera Van Pelt 1933 BB61
    |--Ponderodictya Coryell & Malkin 1936 [incl. Hamiltonella Stewart 1936] BB61
    |    `--P. punctulifera (Hall 1860) (see below for synonymy) BB61
    |--Rothella Wilson 1935 BB61
    |    `--*R. recta (Roth 1929) [=Dizygopleura recta] BB61
    |--Stibus Swartz & Swain 1941 BB61
    |    `--*S. kothornostibus Swartz & Swain 1941 BB61
    |--Thlipsurina Bassler 1941 BB61
    |    `--*T. elongata Bassler 1941 BB61
    |--Thlipsuroides Morris & Hill 1951 BB61
    |    `--*T. thlipsuroides Morris & Hill 1951 BB61
    |--Thlipsuropsis Swartz & Whitmore 1956 BB61
    |    `--*T. diploglyptulis Swartz & Whitmore 1956 BB61
    |--Thrallella Stewart & Hendrix 1945 BB61
    |    `--*T. phaseolina Stewart & Hendrix 1945 BB61
    |--Thlipsurella Swartz 1932 BB61
    |    |--*T. ellipsoclefta Swartz 1932 BB61
    |    `--T. fossata S61
    |--Polyzygia Gürich 1896 WSB93, BB61
    |    |--*P. symmetrica Gürich 1896 BB61
    |    `--P. neodevonica (Matern 1929) WSB93
    |--Eucraterellina Wilson 1935 BB61
    |    |--*E. randolphi Wilson 1935 BB61
    |    |--E. crateriformis BB61
    |    `--E. oblonga BB61
    |--Octonaria Jones 1887 BB61
    |    |--*O. octoformis Jones 1887 BB61
    |    |--O. bifurcata BB61
    |    `--O. laevilatata BB61
    |--Thlipsura Jones & Holl 1869 [incl. Craterellina Ulrich & Bassler 1913] BB61
    |    |--*T. corpulenta Jones & Holl 1869 BB61
    |    |--T. confluens BB61
    |    |--T. furca S61
    |    |--T. plicata [incl. T. plicata var. unipunctata Jones 1887] C01
    |    |--T. robusta BB61
    |    `--T. v-scripta [incl. T. v-scripta var. discreta Hones 1887] C01
    `--Strepulites Coryell & Malkin 1936 [incl. Octonariella Bassler 1941] BB61
         |--*S. mooki Coryell & Malkin 1936 BB61
         |--S. crescentiformis BB61
         |--S. divectus BB61
         `--S. quadricostata BB61

Ponderodictya punctulifera (Hall 1860) [=Leperditia punctulifera; incl. Cytherella bispinulatus Stewart 1927, *Ponderodictya bispinulata] BB61

*Type species of generic name indicated

REFERENCES

[BB61] Benson, R. H., J. M. Berdan, W. A. van den Bold, T. Hanai, I. Hessland, H. V. Howe, R. V. Kesling, S. A. Levinson, R. A. Reyment, R. C. Moore, H. W. Scott, R. H. Shaver, I. G. Sohn, L. E. Stover, F. M. Swain & P. C. Sylvester-Bradley. 1961. Systematic descriptions. In: Moore, R. C. (ed.) Treatise on Invertebrate Paleontology pt Q. Arthropoda 3: Crustacea: Ostracoda pp. Q99–Q421. Geological Society of America and University of Kansas Press.

[C01] Chapman, F. 1901. On some fossils of Wenlock age from Mulde, near Klinteberg, Gotland; with notes by Prof. T. Rupert Jones and Dr. F. A. Bather. Annals and Magazine of Natural History, series 7, 7: 141–160, pl. 3.

[S61] Scott, H. W. 1961. Shell morphology of Ostracoda. In: Moore, R. C. (ed.) Treatise on Invertebrate Paleontology pt Q. Arthropoda 3: Crustacea: Ostracoda pp. Q21–Q37. Geological Society of America and University of Kansas Press.

[WSB93] Whatley, R. C., D. J. Siveter & I. D. Boomer. 1993. Arthropoda (Crustacea: Ostracoda). In: Benton, M. J. (ed.) The Fossil Record 2 pp. 343–356. Chapman & Hall: London.