- Pterobranchia,
members of
which are
often called pterobranchs, is a
class of
small worm-shaped animals. They
belong to the Hemichordata, and live in secreted...
-
Middle Cambrian.
Recent analyses have
favored the idea that the
living pterobranch Rhabdopleura represents an
extant graptolite which diverged from the...
- Graptolithina,
formerly considered extinct, is now
placed within the
pterobranchs,
represented by a
single living genus Rhabdopleura.
Acorn worms are solitary...
- Mid
Cambrian fossil Rhabdotubus johanssoni has been
interpreted as a
pterobranch hemichordate.
Opinions differ about whether the
Chengjiang fauna fossil...
- the only
living genus of graptolites.
Rhabdopleura is the best
studied pterobranch in
developmental biology.
Research in the 2010s by Jörg
Maletz and other...
-
sessile hemichordate belonging to the
order Cephalodiscida. It is the only
pterobranch species with funnel-shaped tubaria. Emig, C.C. (1977). On a new species...
- The Lower-Middle
Cambrian animal Rhabdotubus is the
earliest known pterobranch. It
bears strong similarity to the
graptolites -
indeed for some time it...
-
Rotaciurca is an
extinct genus of
Silurian cephalodiscid pterobranchs. The
genus contains a
single species,
Rotaciurca superbus,
known from the Bertie...
- the
collar has two
tentaculated arms.
Rhabdopleura is the best
studied pterobranch in
developmental biology. This
small order is monotypic. It has only...
- Mid
Cambrian fossil Rhabdotubus johanssoni has been
interpreted as a
pterobranch hemichordate,
whereas Spartobranchus is an acorn-worm from the Burgess...
