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Which came first: The lizard or the egg? Robustness in phylogenetic reconstruction of ancestral states.
TLDR
The results emphasize that because the conclusions of ancestral state reconstruction studies are often highly sensitive to the methods and assumptions of analysis, researchers should carefully consider this sensitivity when evaluating alternative hypotheses of character-state evolution. Expand
Sense organs of monogenean skin parasites ending in a typical cilium.
Single receptors seen with the electron microscope to consist of a terminal cilium embedded in a nerve bulb have been found in the skin parasitic monogenean Gyrodactylus sp., adult and larvalExpand
Compound sensilla in monogenean skin parasites.
The fine structure of two kinds of compound presumed sense organs from the heads of three skin parasitic monogeneans Gyrodactylus sp. Entobdella soleae (larva only) and Acanthocotyle elegans isExpand
The epidermis and sense organs of the monogenea and some related groups.
  • K. Lyons
  • Biology, Medicine
  • Advances in parasitology
  • 1973
TLDR
The Monogenea is a group with a fairly well worked out taxonomy that has been investigated in regard to epidermal fine structure so that the cytoarchitecture of this layer is now known in most of the major groups. Expand
The chemical nature and evolutionary significance of monogenean attachment sclerites.
  • K. Lyons
  • Biology, Medicine
  • Parasitology
  • 1 February 1966
TLDR
Evidence has been presented that monogenean sclerites are in fact deeply seated and unlikely to be derivations of a superficial cuticle, and this has encouraged speculation on the evolution of the different types of attachment organ throughout the polyopisthocotylineans. Expand
Ultrastructural observations on the epidermis of the polyopisthocotylinean monogeneans Rajonchocotyle emarginata and Plectanocotyle gurnardi
  • K. Lyons
  • Biology, Medicine
  • Zeitschrift für Parasitenkunde
  • 2004
TLDR
It is suggested that a terminal web may be a feature of the polyopisthocotylinean epidermis, which is similar to that described for other monogeneans and bears microvilli and has a far less well developed terminal web than that of Rajonchocotyle. Expand
Fine structure of the outer epidermis of the viviparous monogenean Gyrodactylus sp. from the skin of Gasterosteus aculeatus.
The fine structure of the covering layer of Gyrodactylus sp., an unusual monogenean with a peculiar kind of viviparous development, was studied for comparison with the outer layer of moreExpand
The fine structure of the body wall of Gyrocotyle urna
  • K. Lyons
  • Biology
  • Zeitschrift für Parasitenkunde
  • 1 June 1969
TLDR
The posterior rosette appears to be specialized for adhesion as gland cells secreting PAS positive material line the ventral ro sette surface and the epidermis of this region bears short bifurcate microvilli. Expand
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