Record details

Title
    Functional morphology of hyoliths based on flume studies
Statement of responsibility
    Ladislav Marek, Ronald L. Parsley, Arnošt Galle
Author
    Galle, Arnošt
    Marek, Ladislav, 1928-
    Parsley, Ronald L.
Language
    anglicky
Source title - serial
    Věstník Českého geologického ústavu (Bulletin of the Czech Geological Survey)
Vol./nr.
    Vol. 72, no. 4
Pages
    p. 351-358
Year
    1997
Notes
    7 obr., 1 fot., 1 tab., 32 bibl.
    České resumé
    Zkr. název ser.: Věst. Čes. geol. Úst. (Bull. Czech geol. Surv.)
Subject group
    ekologie
    evoluce biologická
    Hyolithes
    kambrium
    Mollusca
    morfologie funkční
    schránky
Keyword
    Based
    Flume
    Functional
    Hyoliths
    Morphology
    Studies
Abstract (in english)
   Flume studies on 1:1 scale models of hyolithid and orthothecid hyoliths confirm earlier work based on epibiont-encrusted hyolithid conchs that hyolithids were rheophylic and most likely were filter feeders. The ligula of hyolithids is interpreted to have accelerated current over the conch in accordance with Bernoulli's principle, and tentacles were probably deployed in the accelerated current for feeding on soft detritus and microorganisms. Hyolithids are thought to be among the earliest filter feeders in the Cambrian evolutionary fauna. In contrast to the hyolithids the orthothecids lack a ligula but have sediment-filled guts and are interpreted to have been non-rheophylic sediment ingesters
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    31. 3. 2008
Import date
    8. 8. 2012