# Dallina

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{{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](/source/Brachiopoda) (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](/source/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](/source/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](/source/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](/source/Dallina_elongata)'' Hatai, 1940, recorded from [Sea of Japan](/source/Sea_of_Japan).<ref name=":0" />
* ''[Dallina eltanini](/source/Dallina_eltanini)'' Foster, 1974, southern Pacific, near Antarctica.<ref name=":0" />
* ''[Dallina floridana](/source/Dallina_floridana)'' (Pourtalès, 1867), recorded from the Gulf of Mexico and Bahamas.<ref name=":0" />
* ''[Dallina obessa](/source/Dallina_obessa)'' Yabe & Hatai, 1934, recorded from Sea of Japan.<ref name=":0" />
* ''[Dallina parva](/source/Dallina_parva)'' Cooper, 1981, recorded from northeast Atlantic ([Bay of Biscay](/source/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](/source/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](/source/Dallina_raphaelis)'' (Dall, 1970), recorded from off Japan.<ref name=":0" />
* ''[Dallina tasmaniaensis](/source/Dallina_tasmaniaensis)'' Verhoeff, 2023, southeastern Australia.<ref name=":1" />
* ''[Dallina triangularis](/source/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

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Adapted from the Wikipedia article [Dallina](https://en.wikipedia.org/wiki/Dallina) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Dallina?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.