fixosessileとは 意味・読み方・使い方

名詞

fixosessile (plural fixosessiles)

1. (paleontology) An organism that attaches firmly (fixes) to a surface (sessile), forming permanent, immobile colonies or individuals, like certain corals, brachiopods, or rotifers that anchor themselves to rocks or plants.
   • 1983, Seilacher, A., “Constructional morphology of bivalves: evolutionary pathways in primary versus secondary soft-bottom dwellers [twenty-fourth annual address, delivered 10 March 1983]”, in The Paleontological Association‎:

     the transition of fixosessile rock dwellers back to soft substrates has resulted in fast and drastic morphological changes

   • 2023, Frank Ettensohn, “LATE ORDOVICIAN TRACE FOSSILS LEFT BY FIXOSESSILE CORAL COLONIES AT A PRE-BENTONITE DIASTEM, CENTRAL KENTUCKY, USA”, in The Geological Society of America‎, archived from the original on 1 December 2024:

     In central Kentucky, this bentonite occurs in the peritidal Tyrone Formation and overlies a widespread, flat, hardground/firmground surface that experienced sediment starvation for periods long enough to support colonies of the fixosessile tabulate coral, Phytopsis cellulosum.