-
symmetry of
gliding reflection. Some
recent research suggests that some
proarticulatans like ****insonia have
genuine segments, and the
isomerism is superficial...
-
based on the
bilateral or
nearly bilateral organisation of
proarticulatans,
though proarticulatans are not
likely to be a
member of the
bilaterian crown group...
- is
called glide reflection symmetry, and is a
diagnostic feature of
proarticulatans.
Transverse elements decrease in size from one end to the
other and...
- communities.
Recent studies of
Cephalonega compare it,
Tamga and
other small proarticulatans to the
juvenile form of Yorgia, and
place them
within Cephalozoa as...
-
Archaeaspinus fedonkini is an
extinct proarticulatan organism from the Late
Precambrian (Ediacaran) period.
Archaeaspinus was
discovered in
Zimnii Bereg...
-
Extinct genus of
proarticulatan fossil...
-
pattern relatively to the axis of the body. In
other words,
although proarticulatans are
bilaterally symmetrical, one side is not the
direct mirror image...
-
Cyanorus singularis is a
small proarticulatan,
closely related to
Spriggina and Marywadea. Its two
largest pairs of
appendages are
located on the anterior...
-
annelid worm, a rangeomorph-like frond, a
variant of Charniodiscus, a
proarticulatan, an
arthropod (perhaps
related to the trilobites), or even an extinct...
-
characteristic of the
majority of
proarticulatans.
According to a 2019 study, all
Cephalonega researchers agree that it is
proarticulatan and put it in the class...
