It is sometimes treated as an infraclass and older books refer to it as being related to symmetrodonts.
12.
The most important subgroup are the barnacles ( infraclass Cirripedia ), constituting about 1, 220 known species.
13.
"' Stenopterygii "'are a superorder of ray-finned fish in the infraclass Teleostei.
14.
A "'ratite "'is any of a diverse group of large, flightless birds of the infraclass Palaeognathae.
15.
Logically, under the Prototheria-Theria scheme, the infraclass of Prototheria corresponding to Eutheria and Metatheria should also be called Prototheria.
16.
In zoology, the term " division " is applied to an optional rank subordinate to the infraclass and superordinate to the cohort.
17.
In Japan, the serow is widely thought of as a kind of deer, though deer and serows are not even of the same infraclass.
18.
The name nudibranch is appropriate, since the dorids ( infraclass Anthobranchia ) breathe through a " naked gill " shaped into branchial plumes in a rosette on their backs.
19.
Theria and Prototheria makes the most sense because Prototheria avoids confusion with its infraclass / order Monotremata .-- Ingoolemo 06 : 29, 30 May 2004 ( UTC)
20.
Michael Benton classifies all dinosaurs within the Series Amniota, Class Sauropsida, Subclass Diapsida, Infraclass Archosauromorpha, Division Archosauria, Subdivision Avemetatarsalia, Infradivision Ornithodira, and Superorder Dinosauria.
