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  1. No Access

    Article

    The curious and neglected soft-bodied meiofauna: Rouphozoa (Gastrotricha and Platyhelminthes)

    Gastrotricha and Platyhelminthes form a clade called Rouphozoa. Representatives of both taxa are main components of meiofaunal communities, but their role in the trophic ecology of marine and freshwater commun...

    Maria Balsamo, Tom Artois, Julian P. S. Smith III, M. Antonio Todaro… in Hydrobiologia (2020)

  2. No Access

    Chapter and Conference Paper

    Frontal organs in the Acoelomorpha (Turbellaria): Ultrastructure and phylogenetic significance

    Using characters discernible through electron microscopy, we redefine the organ traditionally identified as the frontal organ in acoelomorph turbellarians as being a collection of two to several large mucus-se...

    Julian P. S. Smith III, Seth Tyler in Advances in the Biology of Turbellarians a… (1986)

  3. No Access

    Article

    Is the Turbellaria polyphyletic?

    Within the last two decades, syntheses of both light-microscopic and ultrastructural characters have shown that there are three well-defined monophyletic groups within the Platyhelminthes: 1) the Catenulidale,...

    Julian P. S. Smith III, Seth Teyler, Reinhard M. Rieger in Hydrobiologia (1986)

  4. No Access

    Chapter and Conference Paper

    Is the Turbellaria polyphyletic

    Within the last two decades, syntheses of both light-microscopic and ultrastructural characters have shown that there are three well-defined monophyletic groups within the Platyhelminthes: 1) the Catenulidale,...

    Julian P. S. Smith III, Seth Teyler… in Advances in the Biology of Turbellarians a… (1986)

  5. No Access

    Article

    Ultrastructure of the frontal organ in Convoluta and Macrostomum spp.: significance for models of the turbellarian archetype

    Present models of turbellarian evolution depict the organism with a frontal organ — a complex of glands whose necks emerge at the anterior tip of the body — and therefore imply that this organ is homologous th...

    Marianne D. Klauser, Julian P. S. Smith III, Seth Tyler in Hydrobiologia (1986)

  6. No Access

    Article

    Frontal organs in the Acoelomorpha (Turbellaria): Ultrastructure and phylogenetic significance

    Using characters discernible through electron microscopy, we redefine the organ traditionally identified as the frontal organ in acoelomorph turbellarians as being a collection of two to several large mucus-se...

    Julian P. S. Smith III, Seth Tyler in Hydrobiologia (1986)

  7. No Access

    Chapter and Conference Paper

    Ultrastructure of the frontal organ in Convoluta and Macrostomum spp.: significance for models of the turbellarian archetype

    Present models of turbellarian evolution depict the organism with a frontal organ — a complex of glands whose necks emerge at the anterior tip of the body — and therefore imply that this organ is homologous th...

    Marianne D. Klauser, Julian P. S. Smith III… in Advances in the Biology of Turbellarians a… (1986)

  8. No Access

    Article

    Fine-structural observations on the central parenchyma in Convoluta sp.

    Although the turbellarian order Acoela occupies a significant position in many theories on the origin of the Metazoa, detailed ultrastructural observations on members of this group are few in number. The acoel...

    Julian P. S. Smith III in Hydrobiologia (1981)

  9. No Access

    Chapter and Conference Paper

    Fine-structural observations on the central parenchyma in Convoluta sp.

    Although the turbellarian order Acoela occupies a significant position in many theories on the origin of the Metazoa, detailed ultrastructural observations on members of this group are few in number. The acoel...

    Julian P. S. Smith III in The Biology of the Turbellaria (1981)