ceratotrichia
plural of ceratotrichium

Dictionary of ichthyology. 2009.

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  • ceratotrichium — (plural ceratotrichia)) a long, horny or keratinous, non cellular, cylindrical, flexible and non segmented ray which supports the fins of Elasmobranchii and arthrodires. They may replace fin radials or be a third element in fin support in a… …   Dictionary of ichthyology

  • fin web — 1) the fin membrane 2) the compressed part of the shark fin, distal to the base and supported only by ceratotrichia (q.v.) , the aplesodic fin (q.v.), or by ceratotrichia surrounding expanded fin radials or by radials only, the plesodic …   Dictionary of ichthyology

  • Shark — Taxobox name = Shark fossil range = Late Devonian Recent image width = 250px image caption = Grey reef shark, Carcharhinus amblyrhynchos regnum = Animalia phylum = Chordata subphylum = Vertebrata classis = Chondrichthyes subclassis =… …   Wikipedia

  • Dusky shark — Conservation status …   Wikipedia

  • Hydroptilidae — Scientific classification Kingdom: Animalia Phylum: Arthropoda Class: Insecta …   Wikipedia

  • Flossenstrahl — Als Flossenstrahlen (Dermotrichia) werden die tragenden Elemente der Fischflossen bezeichnet. Sie können bei den verschiedenen Fischtaxa in vier verschiedenen Formen ausgebildet sein: Bei den Knorpelfischen (Chondrichthyes) liegen faserig,… …   Deutsch Wikipedia

  • Seekatzen — Gefleckte Seeratte (Hydrolagus colliei) Systematik Stamm: Chordatiere (Chordata) Unterstamm …   Deutsch Wikipedia

  • Hydroptilidae — Hydroptilidés …   Wikipédia en Français

  • Тёмная акула — ? Тёмная акула …   Википедия

  • aplesodic — said of a cartilaginous pectoral fin where basals and radials do not reach the border and so do not offer the support seen in the plesodic fin, q.v. More highly derived fish may have other support for the distal fin region such as ceratotrichia …   Dictionary of ichthyology

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