Lethaia

Cover image for Lethaia

October 1990

Volume 23, Issue 4

Pages 325–432

  1. Original Article

    1. Top of page
    2. Original Article
    1. Double function of aptychi (Ammonoidea) as jaw elements and opercula (pages 325–331)

      ULRICH LEHMANN and CYPRIAN KULICKI

      Article first published online: 9 OCT 2007 | DOI: 10.1111/j.1502-3931.1990.tb01365.x

    2. Reproductive strategy and the life cycle in graptoloid colonies (pages 333–340)

      ADAM URBANEK

      Article first published online: 9 OCT 2007 | DOI: 10.1111/j.1502-3931.1990.tb01366.x

    3. The mesolophe, a new lophophore type for chonetacean brachiopods (pages 341–346)

      PATRICK R. RACHEBŒUF and PAUL COPPER

      Article first published online: 9 OCT 2007 | DOI: 10.1111/j.1502-3931.1990.tb01367.x

    4. A neontological interpretation of conodont elements based on agnathan cyclostome tooth structire function, and development (pages 359–378)

      RICHARD J. KREJSA, PABLO BRINGAS JR. and HAROLD C. SLAVKIN

      Article first published online: 9 OCT 2007 | DOI: 10.1111/j.1502-3931.1990.tb01369.x

    5. Organisation de type tétracoralliaire des rides septales de Palaeacis (Cnidaria, Carbonifére) (pages 385–397)

      YVES PLUSQUELLEC, JEAN LAFUSTE ET and GREGORY E. WEBB

      Article first published online: 9 OCT 2007 | DOI: 10.1111/j.1502-3931.1990.tb01371.x

    6. Predatory asteroids and the fate of brachiopods - a comment (pages 429–430)

      DANIEL B. BLAKE and THOMAS E. GUENSBURG

      Article first published online: 9 OCT 2007 | DOI: 10.1111/j.1502-3931.1990.tb01374.x

    7. Asteroids and articulates: is there a causal link? (pages 431–432)

      GEERAT J. VERMEIJ

      Article first published online: 9 OCT 2007 | DOI: 10.1111/j.1502-3931.1990.tb01375.x

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