View source for Face

[[File:Fig.48A-C.png|thumb|<font size="2">'''Fig. 1.''' Faces (coloured red) in biserial and spiral forms. SEM graphs (if not specified otherwise) of specimens from the Gulf of Aqaba, Red Sea. Recent. '''A-C:''' ''Textularia'' aff. ''goesi'' Cushman, apertural and lateral views of intact specimens and frontal view of broken specimen showing septal face. Note the smooth surfaces characteristic of the faces of many agglutinated forms; '''a:''' [[aperture]]; '''af:''' [[apertural face]]; '''f:''' [[foramen]]; '''pp:''' parapore; '''sfa:''' septal face; '''sut:''' (chamber) suture; (Hottinger, 2006; fig. 48 [http://paleopolis.rediris.es/cg/CG2006_M02/index.html] '''CC'''/BY-NC-SA)]]
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==Definition==
*''according to Hottinger (2006):''
'''FACE''' -  a differentiated part of the shell surface delimited by modification of shell shape, of wall texture or of ornamentation, where single or multiple primary apertures and/or orifices of interlocular spaces are grouped to form a functional unit. 


''Remarks:'' Sofar, the term "face" has been used in combination with a modifyer like [[apertural face]] or septal face, that concern only a single chamber. In addition, we introduce here the generalized term "face" to designate that portion of the shell surface which by its morphological differentiation indicates a particular function. This surface may be delimited by breaks in the topography of the shell surface, such as an angular periphery in trochospiral shells that delimit a more or less flattened base to the conical shape of the shell, or by a particular wall texture, the lack of perforation for instance, and/or by a discrete ornamentation such as radial (''Discorbinoides'') or parallel-linear (''Scarificatina'') ornaments over spiral-umbilical surfaces. Faces are directed towards the substrate in motile benthics, away from the substrate in permanently sessile, arborescent forms or are opposite each other in paired shells ready for [[plastogamy]]. The grouping of apertures and/or orifices on the face may indicate its autecological functions. 



==References==
Hottinger, Halicz & Reiss (1993), Recent Foraminiferida from the Gulf of Aqaba, Red Sea, Opera SAZU, Ljubljana, 33, 179 p. + 230 pls.

Hottinger (2006), [http://paleopolis.rediris.es/cg/CG2006_M02/index.html Illustrated glossary of terms used in foraminiferal research]. [http://paleopolis.rediris.es/cg/uk-index.html Carnets de Géologie], [http://paleopolis.rediris.es/cg/CG2006_M02/index.html Memoir 2], ISSN 1634-0744               
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