{{Short description|Genus of brachiopods}} {{Automatic taxobox | fossil_range = {{fossil range|Miocene|Recent}} | image = Dallina septiger internal 1.jpg | image_caption = ''Dallina septigera'', 23mm wide, recent | taxon = Dallina | authority = Beecher, 1893 | subdivision_ranks = Species | subdivision = See text }}
'''''Dallina''''' is a genus of small to average size lampshells (maximum {{convert|35|mm|disp=or}} long).<ref name='Atkins'>{{cite journal|first=D. |last=Atkins |year=1960 |title=A note on Dallina septigera (Lovèn), (Brachiopoda, Dallinidae) |journal=Journal of the Marine Biological Association of the United Kingdom |volume=3 |issue=1 |pages=91–99 |url=http://core.kmi.open.ac.uk/download/pdf/6186004.pdf |doi=10.1017/s0025315400013126 |url-status=dead |archiveurl=https://web.archive.org/web/20141129012621/http://core.kmi.open.ac.uk/download/pdf/6186004.pdf |archivedate=2014-11-29 }}</ref> It is known since the Miocene.
== Description == Small to large, triangular to subquadrangular in outline; rectimarginate to paraplicate; beak erect, without beak ridges; foramen small to large, mesothyrid, attrite, symphytium concave. Hinge teeth small, weak; pedicle collar very short. Cardinalia lamellar with excavate inner and outer hinge plates separated by narrow crural bases; inner hinge plates converging on median septum to form V-shaped septalium; cardinal process not differentiated; median septum low anteriorly, extending beyond midvalve; adult loop teloform.<ref name='Treatise'>{{cite book|last= Moore|first= R.C.|year= 1965|title= Brachiopoda|publisher= Geological Society of America/University of Kansas Press|series= Treatise on Invertebrate Paleontology|volume= Part H., Volume 2|pages= H835|location= Boulder, Colorado/Lawrence, Kansas|isbn= 0-8137-3015-5}}</ref> <gallery mode="packed"> File:Dallina septigera brachial.jpg|''Dallina septigera'', brachial valve, 24mm long, near the Philippines File:Dallina septigera pedicle valve.jpg|pedicle valve File:Dallina septigera anterior.jpg|anterior view File:Dallina septigera internal 2.jpg|interior view File:Dallina septigera lateral.jpg|lateral view</gallery>
== Taxonomy == Nine extant species are recognized (though one has recently been synonymized),<ref>{{Cite web |title=WoRMS - World Register of Marine Species - Dallina Beecher, 1893 |url=https://www.marinespecies.org/aphia.php?p=taxdetails&id=104041 |access-date=2023-01-16 |website=www.marinespecies.org}}</ref> these are listed below:
* ''Dallina septigera'' (Lovén, 1845), Type species of genus, from northeastern Atlantic.<ref name=":0">{{Cite journal |last=Zezina |first=ON |date=2010 |title=Check-list of Holocene brachiopods annotated with geographical ranges of species |journal=Paleontological Journal |volume=4 |pages=1176–1199}}</ref> * ''Dallina elongata'' Hatai, 1940, recorded from Sea of Japan.<ref name=":0" /> * ''Dallina eltanini'' Foster, 1974, southern Pacific, near Antarctica.<ref name=":0" /> * ''Dallina floridana'' (Pourtalès, 1867), recorded from the Gulf of Mexico and Bahamas.<ref name=":0" /> * ''Dallina obessa'' Yabe & Hatai, 1934, recorded from Sea of Japan.<ref name=":0" /> * ''Dallina parva'' Cooper, 1981, recorded from northeast Atlantic (Bay of Biscay).<ref name=":0" /><ref>{{Cite journal |last=Cooper |first=GA |date=1981 |title=Brachiopoda from the Gulf of Gascogne, France (Recent) |journal=Smithsonian Contributions to Paleobiology |volume=44 |pages=1–35}}</ref> * ''Dallina profundis'' Konjukova, 1957 (junior synonym of ''Glaciarcula spitzbergensis''<ref name=":1">{{Cite journal |last=Verhoeff |first=Tristan Joseph |date=2023 |title=New records and descriptions of recent Australian brachiopods (Terebratulida, Dallinidae and Aulocothyropsidae; and Rhynchonellida, Frieleiidae) |url=https://www.taxonomyaustralia.org.au/ajt/papers/e6c9jc0g6a |journal=Australian Journal of Taxonomy |volume=11 |pages=1–29}}</ref>) * ''Dallina raphaelis'' (Dall, 1970), recorded from off Japan.<ref name=":0" /> * ''Dallina tasmaniaensis'' Verhoeff, 2023, southeastern Australia.<ref name=":1" /> * ''Dallina triangularis'' Yabe & Hatai, 1934, recorded from off Japan and possibly Lau Ridge.<ref name=":0" /><ref name=":1" />
== References == {{Reflist}}
{{Taxonbar|from=Q3542846}}
Category:Terebratulida Category:Brachiopod genera Category:Extant Miocene first appearances