- The
anamniotes are an
informal group of
craniates comprising all fish and amphibians,
which lay
their eggs in
aquatic environments. They are distinguished...
-
groups Image class Estimated number of
described species Group totals Anamniote lack
amniotic membrane so need to
reproduce in
water Jawless "Fish" Myxini...
- mates, to fend off
predators and to
generally survive.
Bring oviparous anamniotes,
frogs typically spawn their eggs in
bodies of water. The eggs then hatch...
- from the
posterior nephric ridge. The
functional embryonic kidney in
anamniotes is the pronephros. Kerr
coined the term ‘opisthonephros’ in 1919. In 1949...
-
Inner ear
regeneration is the
biological process by
which the hair
cells and
supporting cells (i.e. Hensen's
cells and
Deiters cells) of the ear proliferate...
-
transition from
aquatic to
terrestrial environments. Fish and
amphibians are
anamniotes,
lacking the allantois. This sac-like structure,
whose name is Gr**** for...
-
inhibitory neurons. This
structure is very
similar to that
found generally in
anamniotes,
though cartilaginous fishes do show a
layered arrangement of
their pallial...
- (non-amphibian tetrapods) have
cranial nerves similar to
those of humans. In
anamniotes (fishes and amphibians), the
accessory nerve (XI) and
hypoglossal nerve...
-
mother (marsupial and
placental mammals). This
distinguishes amniotes from
anamniotes (fish and amphibians) that have to
spawn in
aquatic environments. Most...
-
Threatened species in Red List Best
estimate of
percent of
threatened species Anamniotes lay eggs in
water Amphibians 8,707 8,020 92% 2,876 41%
Amniotes adapted...
