Platycopina

Specimens of Cytherella, from here.


Belongs within: Ostracoda.
Contains: Cavellinidae.

The Platycopina are a group of ostracods that are first recorded from the Lower Silurian, named for the relatively flat sides of most members of the group. Members of the Platycopina are characterised by the lack of a duplicature and the present of a posteriorly situated brood pouch within the carapace, demarcated by a limen (Adamczak 2003a). They are represented in the modern fauna by the family Cytherellidae, and possibly by the unusual Punciidae.

<==Platycopina [Kloedenelloidea, Platycopa, Platycopida]
    |  i. s.: Punciidae MD01
    |           |--Manawa Hornibrook 1949 H49
    |           |    `--*M. tryphena Hornibrook 1949 H49
    |           `--Puncia Hornibrook 1949 H49
    |                `--*P. novozealandica Hornibrook 1949 H49
    |--Cytherellacea A03b
    |    |--Cavellinidae A03b
    |    `--Cytherellidae A03b
    |         |--Cytherelloidea Alexander 1929 S-VC91
    |         |    |--C. granulosa (Jones 1849) A03b
    |         |    |--C. paratewari Swain & Gilby 1974 S-VC91
    |         |    `--C. praecipua van den Bold 1963 S-VC91
    |         `--Cytherella Jones 1849 A03b
    |              |--C. elongata RR03
    |              |--C. ovata RTR03
    |              |--C. ovularia Swain 1967 S-VC91
    |              |--C. parallela RR03
    |              |--C. parapunctata Swain 1967 S-VC91
    |              `--C. savagei Geis 1932 CB86
    `--Kloedenellacea A03b
         |--Geisinidae CB86
         |    |--Oliganisus Geis 1932 A03a
         |    `--Knoxiella Egorov 1950 CB86
         |         `--K. xinhuaensis Wang 1978 CB86
         `--Kloedenellidae A03b
              |--Evlanella Egorov 1950 A03a
              |    |--*E. ljaschenkoi Egorov 1950 A03a
              |    `--E. mitis Adamczak 1968 [=Venula mitis] A03a
              |--Ispharaella Abushik 1968 A03a
              |    `--*I. ispharaensis Abushik 1968 A03a
              |--Kalugia Egorov 1950 A03a
              |    `--*K. ivanovi Egorov 1950 A03a
              |--Kloedenella Ulrich & Bassler 1908 A03a
              |    `--*K. pennsylvanica (Jones 1889) [=Kloedenia pennsylvanica] A03a
              |--Neokloedenella Croneis & Funkhouser 1939 A03a
              |    `--*N. prima Croneis & Funkhouser 1939 A03a
              |--Kamaroiella Samoilova & Smirnova 1983 A03a
              |    `--*K. victori Samoilova & Smirnova 1983 A03a
              |--Lichvinellina Neckaja 1973 A03a
              |    `--*L. silurica (Neckaja 1966) [=Lichvinia silurica] A03a
              |--Dizygopleura Ulrich & Bassler 1923 A03a
              |    `--*D. swartzi Ulrich & Bassler 1923 A03a
              |--Nyhamnella Adamczak 1966 A03a
              |    |--*N. musculimonstrans Adamczak 1966 A03a
              |    `--N. naturalis Sarv 1977 A03a
              |--Lichvinia Posner in Egorov 1950 [=Lichwinia (l. c.)] A03a
              |    |--*L. lichvinensis Posner in Egorov 1950 [=L. lichwinensis (l. c.)] A03a
              |    `--L. malevkensis Egorov 1950 A03a
              |--Venula Cooper 1941 A03a
              |    `--*V. striata (Croneis & Funkhouser 1939) [=Primitiopsis striatus] A03a
              |--Eukloedenella Ulrich & Bassler 1923 A03a
              |    |--*E. umbilicata Ulrich & Bassler 1923 [incl. E. umbonata Ulrich & Bassler 1923] A03a
              |    `--E. doverensis Turner 1939 A03a
              |--Alveolella Abushik 1971 (see below for synonymy) A03a
              |    |--*A. gracilis Abushik 1971 A03a
              |    `--A. perplexa (Kummerow 1924) (see below f0r synonymy) A03a
              |--Dizygopleurella Samoilova & Smirnova 1962 [=Dicigopleurella (l. c.)] A03a
              |    |--*D. plavskensis Samoilova & Smirnova 1962 A03a
              |    |--D. mehli Morey 1935 A03a
              |    `--D. mutabilacalis (Wang & Cao 1997) [=Ninglangella mutabilicalis] A03a
              `--Poloniella Gürich 1896 A03a
                   |  i. s.: P. tertia Krömmelbein 1953 A03a
                   |--P. (Poloniella) A03a
                   |    |--*P. (P.) devonica Gürich 1896 A03a
                   |    `--P. (P.) diversa Adamczak 1961 A03a
                   `--P. (Framella Weyant 1968) A03a
                        `--P. (*F.) sverdrupi Weyant 1968 A03a

Alveolella Abushik 1971 [incl. Aniluciter Schallreuter 1975, Reticulina Neckaja 1973 nec Bassiouni 1969 nec Donze et al. 1982] A03a

Alveolella perplexa (Kummerow 1924) [=Octonaria perplexa, *Aniluciter perplexa, *Reticulina perplexa] A03a

*Type species of generic name indicated

REFERENCES

[A03a] Adamczak, F. J. 2003a. The platycopine dynasty. 1. Family Kloedenellidae Ulrich & Bassler, 1908. Actual kloedenellaceans. Neues Jahrbuch für Geologie und Paläontologie – Abhandlungen 229 (3): 339-373.

[A03b] Adamczak, F. J. 2003b. The platycopine dynasty. 2. Family Cavellinidae Egorov, 1950. Authentic platycopines. Neues Jahrbuch für Geologie und Paläontologie – Abhandlungen 229 (3): 375-391.

[CB86] Chen D.-Q. & Bao H. 1986. Lower Permian ostracodes from the Chihsia Formation of Jurong and Longtan, Jiangsu Province. Acta Micropalaeontologica Sinica 3 (2): 107-132.

[H49] Hornibrook, N. de B. 1949. A new family of living Ostracoda with striking resemblances to some Palaeozoic Beyrichiidae. Transactions and Proceedings of the Royal Society of New Zealand 77 (4): 469-471.

[MD01] Martin, J. W., & G. E. Davis. 2001. An updated classification of the Recent Crustacea. Natural History Museum Los Angeles County, Science Series 39: 1-124.

[RR03] Rossi, A., J. Rey, B. Andreu & K. Taj-Eddine. 2003. Apport des ostracodes à l’interprétation séquentielle du Crétacé inférieur (Berriasien – Valanginien) du bassin d’Essaouira-Agadir (Maroc). Comptes Rendus Palevol 2: 133-141.

[S-VC91] Segura-Vernis, L. R., & A. L. Carreño. 1991. Foraminíferos y ostrácodos de la Laguna de La Paz, Baja California Sur, México. Inv. Mar. CICIMAR 6 (1): 195-224.

No comments:

Post a Comment

Markup Key:
- <b>bold</b> = bold
- <i>italic</i> = italic
- <a href="http://www.fieldofscience.com/">FoS</a> = FoS