Taxon profile


Adelphotectonica Bieler, 1987

kingdom Animalia - animals »  phylum Mollusca - mollusks »  class Gastropoda - gastropods »  order Allogastropoda »  family Architectonicidae - Sundials


shell medium-sized to large (usually 11-32 mm), low to tall cone-shaped; umbilicus always open, moderately wide to wide (ca. 20-32% of shell diameter); upper point of whorl attachment at peripheral keel of the preceding whorl, resulting in absence of a distinct suture; upper (apical) side with weak to strong growth lines; subsutural and upper peripheral rib usually weak; mid-rib area undivided, or 1 -4fold weakly subdivided [intraspecific variability]; base smooth except for nodose rib surrounding umbilicus (UC) and, in some cases, proxumbilical rib; umbilical wall without spiral ribs; indistinctly colored in shades of tan, regular fleck pattern usually restricted to peripheral ribs. Protoconch: medium-sized to very large (ca. 1.04-1.56), distinctly heterostrophic, frequently with distinct anal keel. Radula: ptenoglossate-like; rachidian with 3 cusps, flanked by 7 marginals on either side; marginals with 2 long processes each. Operculum: horny, ear-shaped with broad last whorl, flat with peg-like projection on body side.
Source: Bieler, 1993. Architectonicidae of the Indo-Pacific (Mollusca, Gastropoda).
Author: Jan Delsing

Included taxa

Number of records: 4

species Adelphotectonica kuroharai (Kuroda & Habe, 1961)

Adelphotectonica kuroharai

species Adelphotectonica nomotoi (S. Kosuge, 1979)

Adelphotectonica nomotoi

species Adelphotectonica reevei (Hanley, 1862) - Reeve's Sundial-shell

Adelphotectonica reevei

species Adelphotectonica uruguaya (A. Carcelles, 1953)

Adelphotectonica uruguaya

Links and literature

EN The Interim Register of Marine and Nonmarine Genera [1001934]

Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [] [as Adelphotectonica Bieler, 1987]
Data retrieved on: 30 November 2019
EN Australian Faunal Directory [03a6851c-9706-4c29-9608-183494d7834c]

ABRS (2009-2019): Australian Faunal Directory [], Australian Biological Resources Study, Canberra [as Adelphotectonica Bieler, 1987]
Data retrieved on: 13 February 2015

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