Discinida

Discinida; Temporal range: Cambrian Stage 2–Recent[1] PreЄ Є O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Clade:	Lophophorata
Phylum:	Brachiopoda
Subphylum:	Linguliformea
Order:	Discinida
Superfamilies (and genera)
Discinoidea ;
	Discinidae ; Discina (brachiopod) ; Discinisca ; Discradisca ; Pelagodiscus ; †Trematidae ;
† Botsfordioidea ;
	...
†Acrotheloidea (?) ;
	...

Discinida is an order of brachiopods comprising the extant superfamily Discinoidea, and the extinct superfamilies Botsfordioidea (early—mid-Cambrian) and Acrotheloidea (early Cambrian–Early Ordovician).^[2] It represents a sister taxon to the Lingulids, and is possibly paraphyletic with respect to the Acrotretoids.^[3] -- or the acrotretids are paraphyletic with respect to it.^[4] The group displays a broad range of shell structures, some of which incorporate substantial organic or silicified components.^[3]

References

↑ "Discinida". Retrieved 1 September 2016.
↑ Ruppert, E.E; Fox, R.S.; Barnes, R.D (2004). Invertebrate Zoology (7 ed.). Brooks/Cole. pp. 821–829. ISBN 978-0-03-025982-1.
1 2 Williams, A.; Cusack, M.; Buckman, J. O. (1998). "Chemico-structural phylogeny of the discinoid brachiopod shell". Philosophical Transactions of the Royal Society B: Biological Sciences. 353 (1378): 2005–2038. doi:10.1098/rstb.1998.0350. PMC 1692430.
↑ (PDF) http://rstb.royalsocietypublishing.org/content/royptb/337/1279/83.full.pdf. Missing or empty |title= (help) >

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[1] "Discinida". Retrieved 1 September 2016.

[2] Ruppert, E.E; Fox, R.S.; Barnes, R.D (2004). Invertebrate Zoology (7 ed.). Brooks/Cole. pp. 821–829. ISBN 978-0-03-025982-1.

[auto-3] 1 2 Williams, A.; Cusack, M.; Buckman, J. O. (1998). "Chemico-structural phylogeny of the discinoid brachiopod shell". Philosophical Transactions of the Royal Society B: Biological Sciences. 353 (1378): 2005–2038. doi:10.1098/rstb.1998.0350. PMC 1692430.

[4] (PDF) http://rstb.royalsocietypublishing.org/content/royptb/337/1279/83.full.pdf. Missing or empty |title= (help) >