-
environments worldwide from the
lower Cambrian to the
upper Ordovician.
Megacheirans are
defined by
their possession of
uniramous "great appendages", which...
-
great appendage-like
raptorial arms, it was not
homologous with
those of
megacheirans.
Kodymirus is
currently considered a
member of Vicissicaudata, closely...
-
majority of
other megacheirans,
which typically have a
small telson with
copious amounts of spines. The only
other described megacheiran known with a similar...
-
frontal projections, as well as a pair of
great appendages, like
other megacheirans,
along with two
other cephalic appendages. The
trunk had
either 20 or...
- is a
feature shared by the
great appendages of
megacheirans.
Similar to the
multisegmented megacheirans, the
trunk of
Kylinxia covers most of the body...
-
Leanchoilia is a
megacheiran marine arthropod known from
Cambrian deposits of the
Burgess Shale in
Canada and the
Chengjiang biota of China. L. superlata...
- than 50
species of trilobites, non-biomineralized
arthropods (including
megacheirans, nektaspids, and hymenocarines), radiodonts, palaeoscolecids, a lobopodian...
- in a
phylogenetic analysis recovered them as part of a
polytomy with
megacheirans, marrellomorphs,
crustaceans and artiopodans. Still,
strabopids are often...
-
exopod suggested to be used for
hunting and
swimming respectively.
Within megacheirans,
Haikoucaris is
generally accepted to be a
member of the
clade Cheiromorpha...
-
likely nested within megacheirans, and
megacheirans was no
longer thought to be
originated from
radiodonts since than.
Within megacheirans,
Parapeytoia possibly...
