Trunk segmentation of some podocopine lineages in Ostracoda

  title={Trunk segmentation of some podocopine lineages in Ostracoda},
  author={Akira Tsukagoshi and Andrew R Parker},
The trunk segments of podocopine ostracods, which have previously been regarded as having a non-segmented body, are comprehensively illustrated in some lineages for the first time. Descriptions are given of the trunk segmentation of representatives from eight podocopine families: Bairdiidae, Eucytheridae, Leptocytheridae, Cytheridae, Hemicytheridae, Cytheruridae, Loxoconchidae and Xestoleberididae. As observed in the family Leptocytheridae, the maximum number of segments in the Podocopina… 

Appendage Homologies and the First Record of Eyes in Platycopid Ostracods, with the Description of a New Species of Keijcyoidea (Crustacea: Ostracoda) from Japan

A median nauplius eye is reported for the first time in a platycopid ostracod, a group hitherto considered to be blind, and the homologies and phylogenetic implications of the trunk segmentation and limbs are discussed.

On the origin of the putative furca of the Ostracoda (Crustacea)

All extant ostracods belong to a monophyletic lineage, with the so-called furcae of the Ostracoda being homologous structures, and a change in terminology is proposed: uropodal plates or lamellae in the Platycopida, Palaeocopida and MyodOCopida/Halocyprida; uropods or caudal rami in the Podocopidas.

Origin of the Ostracoda and their maxillopodan and hexapodan affinities

  • W. Newman
  • Geography, Environmental Science
  • 2004
If current interpretations of living ostracodan and fossil hexapodan body plans are largely correct, it can be hypothesized the Ostracoda are close to the ancestor of the Hexapoda, and if so they are convergent.

Functional morphology of Palaeozoic ostracods: phylogenetic implications

  • G. Becker
  • Geography, Environmental Science
  • 2004
The combination of soft anatomy, carapace architecture and behaviour (feeding techniques, brood care) provide evidence of a general body plan which appeared (at the latest) during the Ordovician and continuously evolved towards the anatomy of modern ostracods.

Ostracod phylogeny and evolution – thirty years after “Manawan perspective”

Examination of the discrepancy between the low species diversity of Puncioidea and those of the species-rich nonmarine Cypridoidea may be as a result of the major differences in the way representatives of the two ostracod groups are able to actively perceive the surrounding environment as well as to their capacity to construct their niche, leading to successful speciation.

On a remarkable South African giant ostracod (Crustacea, Ostracoda, Cyprididae) from temporary pools, with additional appendages

It is deduced that, contrary to earlier claims, the (female) genital organs in ostracods might be homologous to more than one (thoracic) limb, in this case 3–5 limbs and segments within the family Cyprididae.

The female reproductive organ in podocopid ostracods is homologous to five appendages: histological evidence from Liocypris grandis (Crustacea, Ostracoda)

Investigation of morphology and attachment of these structures by frontal and transversal micro-sectioning of the caudal soft parts of mature females of L. grandis finds that all five appendages (R1–R5) have one individual attachment point where they enter into the FRO, and that the female reproductive organ is homologous to at least five appendage-like structures.

Taxonomy, Morphology and Biology of Quaternary and Living Ostracoda

The morphology, taxonomy, ontogeny and life histories of ostracods are reviewed and illustrated, paying attention to limbs as well as carapaces (hard parts), with emphasis on the Order Podocopida as the group most likely to be encountered in Quaternary deposits.

On Afrocypris barnardi G. O. Sars, 1924 (Ostracoda), a second giant ostracode with additional appendages

The present morphological analyses show that the copulatory appendages of both sexes have unusual characteristics, and strengthen the interpretation of these structures as (part of) true appendages, and reinforces the hypothesis that the FRO is homologous to more than one ancestral somite.

Non-marine Ostracoda (Crustacea) as indicator species group of habitat types

Overall, multiple regression models suggested that rather than focusing on one particular species, two or more ostracod species or the so-called indicator species group can also be used for habitat type(s) and/or aquatic condition(s).



The Origin of the Crustacea

The idea that arthropodization must have occurred more than once and that the Arthropoda is a polyphyletic assemblage is supported, and evidence in favour of this view is cited.

A redescription of Cythere japonica Hanai, 1959 (Podocopida: Ostracoda)

The existence of living Cythere japonica in the tidal zone of north-west Japan is confirmed, and its taxonomic position is re-examined on the basis of its appendages and the ontogeny of pore systems.

Arthropod Fossils and Phylogeny

Introduction: The Role of Extinct Taxa in Arthropod Phylogeny, by Gregory D. EdgecombeMolecular Systematics and Arthropods, by Ward WheelerAn Arthropod Phylogeny Based on Fossil and Recent Taxa, by

Two New Living Species of Saipanetta (Ostracoda, Podocopida)

Deux nouvelles especes vivantes de Saipanetta (Podocopida, Ostracoda) sont decrites. S. bensoni, n. sp., a ete trouvee dans l'Ocean Pacifique pres des Isles Galapagos, a la profondeur de 2489 metres

Saipanellidae: a New Family of Podocopid Ostracoda

[Eine neue Ostracodenfamilie wird beschrieben. Sie kommt fossil im Karibischen Meer, Europa und Australien vor und wird lebend gefunden im Indopazifik und auf pazifischen Inseln. Die Familie basiert

Zenker's organ and a new species of Saipanetta (Ostracoda)

S. brooksi n.sp., four other species described, morphology, Holocene, off Bermuda, Mexico, and Galapagos Islands

Ostracodes from Uranouchi Bay, Kochi Prefecture, Japan

The Ostracoda of Misaki

  • Part 3. Zool. Mag
  • 1913

Part 4: Ostracoda

  • The Biology of Crustacea 1 : Systematics , the Fossil Record and Biogeography
  • 1982