. Bulletin. Science. 82 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. Fig. 1. Index map ington. to LACMIP localities where fossil Limaeina spp. have been found in Wash- ICZN) is necessary for a formal decision of name priority. To date, no application has been made, but one will be made in the near future by A. W. Janssen (pers. comm.). Pending the ICZN decision, we have subjectively decided, like Be and Gilmer (1977) and Janssen (1989a), to use the name Limaeina because it is more frequently used than Spiratella. In addition, usage of the name Limaeina will help bring the work of paleontologists a
. Bulletin. Science. 82 SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. Fig. 1. Index map ington. to LACMIP localities where fossil Limaeina spp. have been found in Wash- ICZN) is necessary for a formal decision of name priority. To date, no application has been made, but one will be made in the near future by A. W. Janssen (pers. comm.). Pending the ICZN decision, we have subjectively decided, like Be and Gilmer (1977) and Janssen (1989a), to use the name Limaeina because it is more frequently used than Spiratella. In addition, usage of the name Limaeina will help bring the work of paleontologists and biologists in line. Adding to the confusion around the synonymous taxa Limaeina and Spiratella, in older papers (, Kittl 1886) the name Spinalis Eydoux and Souleyet 1840 has been used (at least, in part) for this same group of pteropods. For a full synonymy of genus Limaeina, see Spoel (1967:36). Traditionally, Limaeina is the only genus recognized within this family. At- tempts to split the genus into three subgenera have not received wide acceptance because the boundaries between the subgenera are unclear (Bielokrys 1997) and the fossil forms were not fully treated (Janssen 1989a). Limaeina is characterized by a sinistrally coiled shell (anatomically dextral) that can be conispiral (the term "trochoid" is used by some authors) or more flattened and involute. Characters such as relative whorl height, aperture outline or aperture elongation, and development of the umbilicus are quite variable and can coincide in different species (Bielokrys 1997). In order to differentiate spe- cies, it is critical to have the entire adult teleoconch Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southern California Academy of Sciences. Los Angeles, Calif. : The Academy
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