Hollinidae

Right valve of female Falsipollex laxivelatus, from Benson et al. (1961).

Belongs within: Ostracoda.

The Hollinidae are a family of distinctly dimorphic ostracods known from the Middle Ordovician to the Middle Permian. Females commonly have a large velar frill that is often strongly incurved whereas males commonly have a narrower and/or outwardly flared frill (Benson et al. 1961).

Characters (from Benson et al. 1961): Carapace slightly inequivalved, with overlap of left valve on right valve, mostly with strongly developed lobation, including bi-, tri- and quadrilobate types. L₃ large and bulbous in many genera; velar structures more or less prominent, restricted to anterior and ventral parts of free bords. Hinge line straight, hingement consisting of subtriangular pits or furrows at ends of left valve hinge for reception of corners of right valve. Dimorphism distinct, shown primarily by form of velar structures. Surface commonly papillate.

<==Hollinidae [Ctenoloculininae]
    |--Arikloedenia inagna WSQ86
    |--Aloculatia hartmanni Schallreuter 1976 WSB93
    |--Hollina Ulrich & Bassler 1908 BB61
    |    `--*H. insolens (Ulrich 1908) [=Ctenobolbina insolens] BB61
    |--Abditoloculina Kesling 1952 BB61
    |    `--*A. insolita Kesling 1952 BB61
    |--Bisacculus Stewart & Hendrix 1945 BB61
    |    `--*B. bilobus Stewart & Hendrix 1945 BB61
    |--Ctenoloculina Bassler 1941 BB61
    |    `--*C. cicatricosa (Warthin 1934) [=Tetradella cicatricosa] BB61
    |--Grammolomatella Jaanusson 1957 BB61
    |    `--*G. vestrogothicum (Henningsmoen 1948) [=Biflabellum vestrogothicum] BB61
    |--Janischewskya Batalina 1924 BB61
    |    `--*J. digitata Batalina 1924 BB61
    |--Ruptivelum Kesling & Weiss 1953 BB61
    |    `--*R. bacculatum Kesling & Weiss 1953 BB61
    |--Subligaculum Kesling & McMillan 1951 BB61
    |    `--*S. scrobiculatum Kesling & McMillan 1951 BB61
    |--Triemilomatella Jaanusson & Martinsson 1956 BB61
    |    `--*T. prisca Jaanusson & Martinsson 1956 BB61
    |--Hanaites Pokorný 1950 WSQ86 [incl. Proplectrum Kesling & McMillan 1951 BB61]
    |    |--*H. givetianus (Pokorný 1950) [=Halliella (*Hanaites) givetiana] BB61
    |    `--H. platus (Kesling & McMillan 1951) WSQ86 [=*Proplectrum platum BB61]
    |--Gortanella Ruggieri 1966 HM04
    |    |--G. longispina (Jones & Kirby 1886) (see below for synonymy) HM04
    |    `--G. ruggierii Olempska 1999 HM04
    |--Jordanites ZL87
    |    |--J. honeei Bless 1972 ZL87
    |    `--J. rawihinggili Bless 1972 ZL87
    |--Eohollina Harris 1957 BB61
    |    |--*E. irregularis (Spivey 1939) [=Beyrichia irregularis] BB61
    |    `--E. depressa BB61
    |--Flaccivelum Kesling & Peterson 1958 BB61
    |    |--*F. teleutaea (Kesling & Tabor 1952) [=Winchellatia teleutaea] BB61
    |    `--F. informis BB61
    |--Parabolbina Swartz 1936 BB61
    |    |--*P. granosa (Ulrich 1900) [=Ctenobolbina granosa] BB61
    |    `--P. limbata BB61
    |--Subtella Zaspelova 1952 BB61
    |    |--*S. prima Zaspelova 1952 BB61
    |    `--S. latimarginata BB61
    |--Tetrasacculus Stewart 1936 [incl. Pterocodella Croneis & Gale 1938, Workmanella Croneis & Gale 1938] BB61
    |    |--*T. bilobus Stewart 1936 BB61
    |    |--T. mirabilis BB61
    |    `--T. timorensis Bless 1987 WSB93
    |--Adelphobolbina Stover 1956 WSQ86
    |    |--*A. papillosa (Ulrich 1891) [=Ctenobolbina papillosa] BB61
    |    |--A. megalia WSQ86
    |    |--A. pinguis WSQ86
    |    `--A. striatoreticulata Shi in Wang, Shi & Qu 1986 WSQ86
    |--Ctenobolbina Ulrich 1890 BB61
    |    |--*C. ciliata (Emmons 1855) [=Beyrichia ciliata] BB61
    |    |--C. alata BB61
    |    |--C. fulcrata [=Dilobella fulcrata] BB61
    |    `--C. obliqua BB61
    `--Falsipollex Kesling & McMillan 1951 BB61
         |--*F. altituberculatus Kesling & McMillan 1951 BB61
         |--F. equipapillatus BB61
         |--F. laxivelatus BB61
         `--F. valgus BB61

Gortanella longispina (Jones & Kirby 1886) [=Beyrichia longispina, Hollina longispina, Hollinella longispina; incl. Hollina stephanori Batalina 1926] HM04

*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.

[HM04] Hoare, R. D., & G. K. Merrill. 2004. A Pennsylvanian (Morrowan) ostracode fauna from Texas. Journal of Paleontology 78 (1): 185–204.

[WSQ86] Wang C.-Y., Shi C.-G. & Qu G.-S. 1986. Conodonts and ostracodes from the Devonian “Heitai Formation” of Mishan County, Heilongjiang Province. Acta Micropalaeontologica Sinica 3 (2): 205–214.

[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.

[ZL87] Zhang X.-J. & Liang X.-Y. 1987. Ostracoda from the Taiyuan Formation of Xingyang and Gong Xian districts, Henan. Acta Micropalaeontologica Sinica 4 (3): 293–312.

Last updated: 13 October 2020.