Definitions
Atrium oris
- Preoral cavity, bounded ventrally by posteriorly directed labrum, dorsally by ventral surface of cephalon just behind mouth, and laterally by paragnaths and mandibles. [Moore and McCormick, 1969]
- Preoral cavity, bounded ventrally by posteriorly directed labrum, dorsally by ventral surface of cephalon just behind mouth, and laterally by paragnaths and mandibles. [McLaughlin, 1980]
- (Taxon-specific: Order Diplostraca) Large preoral cavity formed by upper lip (labrum) extending over mouth. Tips (molar processes) of mandibles extend into atrium oris. [Stachowitsch, 1992]
- (Taxon-specific: Class Cephalocarida) Large preoral cavity formed by labrum extending over mouth. Mandibles (and to a lesser extent the endites or gnathobases of maxillules) extend into atrium oris. [Stachowitsch, 1992]
- (Taxon-specific: Class Remipedia) Cavity around mouth formed by projecting posterior margin of labrum and paragnaths; masticatory ends (incisor process, lacinia mobilis, molar process) of mandible project into atrium oris. [Stachowitsch, 1992]
Copyright
NHMLAC
Design: Dean Pentcheff pentcheff@gmail.com
Citing this glossary: For individual definitions, please cite the specific author(s) of the definition.
To cite the glossary as a whole, please use:
Martin, J.W., N.D. Pentcheff, D. Striley, C. Perrodin, A.R. Wall, J. Wall, and J. Zieba (editors).
Crustacea Glossary. Crustacea Department, Natural History Museum of Los Angeles County.
Accessed:
21 Nov 2024. URL: https://research.nhm.org/glossary