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F r o m W i k i p e d i a , t h e f r e e e n c y c l o p e d i a
Historic group of molluscs
Conus geographicus (a marine snail)
Orthogastropoda was a major taxonomic grouping of snails and slugs, an extremely large subclass within the huge class Gastropoda according to the older taxonomy of the Gastropoda (Ponder & Lindberg, 1997) .
This taxon is no longer used according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005 .
Ponder and Lindberg (1997) in the book The Southern Synthesis , showed the Orthogastropoda as one of two subclasses of the Gastropoda , the other subclass being a very much smaller group called the Eogastropoda , which contained only 5 families of true limpets.
This subclass, Orthogastropoda, which one perhaps could call the true snails , was defined most concisely as all gastropods which were not members of Patellogastropoda , the true limpets.
The Orthogastropoda appeared to form a clade which was supported by unambiguous synapomorphies. These synapomorphies (a series of characteristics that appear in its members but not in the other forms it diverged from) were the identifying characteristics of the clade.
Some of the characteristics were:
eyes with a vitreous body on eyestalks.
paired jaws, with their position free from the buccal mass
a single kidney on the right side of pericardium
a flexoglossate radula (with a flexible radular membrane). The radula is the snail's tongue, used as a rasping tool.
unpaired osphradium (olfactory organ).
lateral ciliated zones of osphradium
a single left hypobranchial gland (on organ at gill, which releases secretions, such as the reddish dye Tyrian purple ).
an unpaired ctenidium (a comblike respiratory structure in certain mollusks)
Taxonomy [ edit ]
The following is based on the somewhat out-dated taxonomy of the Gastropoda (Ponder & Lindberg, 1997) . For the most up-to-date system of gastropod taxonomy, please see Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005) .
Superorder Cocculiniformia Haszprunar, 1987
Superorder incertae sedis (Hot Vent Taxa)
Order Neomphaloida Sitnikova & Starobogatov, 1983
Superfamily Neomphaloidea McLean, 1981 (hydrothermal vent limpets)
Superfamily Peltospiroidea McLean, 1989
Superorder Vetigastropoda Salvini-Plawen, 1989 (limpets)
Superorder Neritaemorphi Koken, 1896
Superorder Caenogastropoda Cox, 1960
Order Architaenioglossa Haller, 1890
Order Sorbeoconcha Ponder & Lindberg , 1997[1] [2]
Suborder Cerithiimorpha Golikov & Starobogatov, 1975
Superfamily Spanionematoidea
Suborder Hypsogastropoda Ponder & Lindberg , 1997
Infraorder Littorinimorpha Golikov & Starobogatov, 1975
Superfamily Calyptraeoidea Lamarck , 1809
Superfamily Capuloidea J. Fleming, 1822
Superfamily Carinarioidea Blainville , 1818
Superfamily Cingulopsoidea Fretter & Patil, 1958
Superfamily Cypraeoidea Rafinesque , 1815
Superfamily Ficoidea Meek , 1864
Superfamily Laubierinoidea Warén & Bouchet, 1990
Superfamily Littorinoidea (Children), 1834 (periwinkles)
Superfamily Naticoidea Forbes, 1838 (moon shells)
Superfamily Rissooidea J.E. Gray, 1847 (Risso shells)
Superfamily Stromboidea Rafinesque , 1815
Superfamily Tonnoidea Suter , 1913
Superfamily Trivioidea Troschel, 1863
Superfamily Vanikoroidea J.E. Gray, 1840
Superfamily Velutinoidea J.E. Gray, 1840
Superfamily Vermetoidea Rafinesque , 1815
Superfamily Xenophoroidea Troschel, 1852 (carrier shells)
Infraorder Neogastropoda Thiele , 1929
Infraorder Ptenoglossa J.E. Gray, 1853
Suborder Discopoda P. Fischer, 1884 - sometimes included in Cerithiimorpha
Suborder Murchisoniina Cox & Knight, 1960
Superorder Heterobranchia J.E. Gray, 1840
Order Heterostropha P. Fischer, 1885
Order Opisthobranchia Milne-Edwards, 1848
Order Pulmonata Cuvier in Blainville , 1814 (pulmonates)
Subinfraorder Orthurethra
Subinfraorder Sigmurethra
Superfamily Acavoidea Pilsbry, 1895
Superfamily Achatinoidea Swainson , 1840
Superfamily Aillyoidea Baker, 1960
Superfamily Arionoidea J.E. Gray in Turnton, 1840
Superfamily Buliminoidea Clessin, 1879
Superfamily Camaenoidea Pilsbry, 1895
Superfamily Clausilioidea Mörch , 1864
Superfamily Dyakioidea Gude & Woodward, 1921
Superfamily Gastrodontoidea Tryon, 1866
Superfamily Helicoidea Rafinesque , 1815
Superfamily Helixarionoidea Bourguignat, 1877
Superfamily Limacoidea Rafinesque , 1815
Superfamily Oleacinoidea H. & A. Adams , 1855
Superfamily Orthalicoidea Albers-Martens, 1860
Superfamily Plectopylidoidea Moellendorf, 1900
Superfamily Polygyroidea Pilsbry, 1894
Superfamily Punctoidea Morse, 1864
Superfamily Rhytidoidea Pilsbry, 1893
Superfamily Sagdidoidera Pilsbry, 1895
Superfamily Staffordioidea Thiele , 1931
Superfamily Streptaxoidea J.E. Gray, 1806
Superfamily Strophocheiloidea Thiele , 1926
Superfamily Trigonochlamydoidea Hese, 1882
Superfamily Zonitoidea Mörch , 1864
Infraorder Acteophila Dall , 1885
Infraorder Trimusculiformes Minichev & Starobogatov, 1975
Infraorder Stylommatophora A. Schmidt, 1856 (land snails)
Suborder Basommatophora Keferstein in Bronn, 1864 (freshwater pulmonates)
Suborder Eupulmonata Haszprunar & Huber, 1990
Suborder Systellommatophora Pilsbry, 1948
References [ edit ]
^ "WoRMS taxon details" . World Register of Marine Species .
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=Orthogastropoda&oldid=1226285481 " C a t e g o r i e s : ● O b s o l e t e g a s t r o p o d t a x a ● P a t e l l o g a s t r o p o d a ● M o l l u s c s u b c l a s s e s H i d d e n c a t e g o r i e s : ● A r t i c l e s w i t h s h o r t d e s c r i p t i o n ● S h o r t d e s c r i p t i o n i s d i f f e r e n t f r o m W i k i d a t a ● A r t i c l e s w i t h ' s p e c i e s ' m i c r o f o r m a t s
● T h i s p a g e w a s l a s t e d i t e d o n 2 9 M a y 2 0 2 4 , a t 1 7 : 4 6 ( U T C ) . ● T e x t i s a v a i l a b l e u n d e r t h e C r e a t i v e C o m m o n s A t t r i b u t i o n - S h a r e A l i k e L i c e n s e 4 . 0 ;
a d d i t i o n a l t e r m s m a y a p p l y . B y u s i n g t h i s s i t e , y o u a g r e e t o t h e T e r m s o f U s e a n d P r i v a c y P o l i c y . W i k i p e d i a ® i s a r e g i s t e r e d t r a d e m a r k o f t h e W i k i m e d i a F o u n d a t i o n , I n c . , a n o n - p r o f i t o r g a n i z a t i o n . ● P r i v a c y p o l i c y ● A b o u t W i k i p e d i a ● D i s c l a i m e r s ● C o n t a c t W i k i p e d i a ● C o d e o f C o n d u c t ● D e v e l o p e r s ● S t a t i s t i c s ● C o o k i e s t a t e m e n t ● M o b i l e v i e w
