- lay eggs, and therians,
mammals which give live birth,
which has two
infraclasses: marsupials/metatherians and placentals/eutherians. See List of monotremes...
-
subclass Theria;
those living today are in the
marsupial and
placental infraclasses.
Marsupials have a
short gestation period,
typically shorter than its...
-
Arthropoda class:
Thecostraca Subclass:
Cirripedia Burmeister, 1834
Infraclasses Acrothoracica (Gruvel, 1905)
Rhizocephala (Müller, 1862)
Thoracica (Darwin...
-
analytical artefacts. Traditionally, this
group was
divided into the
infraclasses Paleoptera and Neoptera. The
former are
nowadays strongly suspected of...
- subclasses,
Metatheria and
Eutheria are by
convention now
grouped as
infraclasses of the
subclass Theria, and in more
recent proposals have been demoted...
-
other millipedes belong to the
subclass Chilognatha consisting of two
infraclasses: Pentazonia,
containing the short-bodied pill millipedes, and Helminthomorpha...
- give live
birth (therians). The
latter subclass is
divided into two
infraclasses:
pouched mammals (metatherians or marsupials), and
placental mammals...
-
Chondrostei and Neopterygii. The Neopterygii, in turn, is
divided into the
infraclasses Holostei and Teleostei.
During the
Mesozoic (Tri****ic, Jur****ic, Cretaceous)...
- similar,
although the
species are only very
distantly related (different
infraclasses). The
skull shape of the red fox,
Vulpes vulpes, is even
closer to that...
- monotremes), and live
birth mammals. The
second subclass is
divided into two
infraclasses:
pouched mammals (the marsupials) and
placental mammals.
Australia is...
