Seguenzia giovia Dall, 1919,

Geiger, Daniel L., 2019, The Family Seguenziidae Verrill, 1884 in the Northeast Pacific, including a comment on excessive numbers of taxonomic data portals, Zoosymposia 13, pp. 61-69: 66

publication ID

http://dx.doi.org/10.11646/zoosymposia.13.1.7

publication LSID

lsid:zoobank.org:pub:urn:lsid:zoobank.org:pub:16D27C71-5A6C-4ADF-AD6C-6B07C2773112

persistent identifier

http://treatment.plazi.org/id/D557D228-F43E-FFBC-D58F-FF7DFAF7FFF8

treatment provided by

Plazi

scientific name

Seguenzia giovia Dall, 1919
status

 

Seguenzia giovia Dall, 1919 

( Figure 2View FIGURE 2 E–F)

Seguenzia giovia Dall, 1919: 343–344  . Holotype USNM 209228View Materials. Off Santa Catalina Island , California Channel Islands, 190– 216 m [see remarks below].

Seguenzia quinni McLean, 1985: 337  , fig. 2. Holotype LACM 2065View Materials. Tufts Abyssal Plain, W of Lincoln County, Oregon, 3900 m. New synonym.

Description. Shell to 7.5 mm, globular biconical; carinated spiral cords below suture, strongest on mid shoulder, from periphery to base approximately 10 of decreasing strength; fine spiral lines between cords; axial cordlets distinct; Umbilicus moderately wide, bordered by spiral carina, with funiculus; Columellar wall thickened, terminating as sharp spur. Flaring of lip variable depending on size, preservation of specimen.

Distribution. Off Oregon (45˚N) to Southern California (33˚N). 800–3900 m.

Remarks. Seguenzia quinni  is a larger, better-preserved specimen of S. giovia  ; note the identical teleoconch sculpture and umbilical details. The type locality of S. giovia  (Albatross 4408) is most likely erroneous because it is too shallow for seguenziids, and may be any of the Albatross 4400–4407 stations at depths of 450–650 fathoms (820–1190 m), all off Santa Catalina Island, Los Angeles County, California.

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Family

Seguenziidae

Genus

Seguenzia

Loc

Seguenzia giovia Dall, 1919

Geiger, Daniel L. 2019
2019
Loc

Seguenzia quinni

McLean, J. H. 1985: 337