-
onychophoran with a
minimum age of 300 million
years ago,
resulting in a
divergence date of 376 million
years ago for the
crown group onychophorans....
-
priapulids and
onychophorans,
there is a
layer of
outermost circular muscles and a
layer of
innermost longitudinal muscles. The
onychophorans also have a...
-
these features were
convergently evolved between onychophoran and
arthropod lineages.
Onychophorans and
tardigrades shared some
lobopodian traits (e.g...
-
modern onychophorans. On the
other hand, some
analysis rather support the
position of
Hallucigenia as a
basal panarthropod outside of
onychophoran stem-group...
-
Burgess shale.
Extant phyla in
these rocks include molluscs, brachiopods,
onychophorans, tardigrades, arthropods,
echinoderms and hemichordates,
along with...
-
vertebrates have a true brain,
though precursor structures exist in
onychophorans,
gastropods and lancelets. The rest of this
article exclusively discusses...
-
spiders and scorpions; the crustaceans; and the uniramia,
consisting of
onychophorans,
myriapods and hexapods.
These arguments usually byp****ed trilobites...
-
sense if the
mouth of
onychophorans was
originally terminal and has been bent downwards. Second, the
antennae of the
onychophorans appear to be innervated...
-
certain groups. A
respiratory and
circulatory system is only
present in
onychophorans and
arthropods (often
absent in
smaller arthropods like mites); in the...
- Smith,
Martin R.; Ortega-Hernández,
Javier (2014). "Hallucigenia's
onychophoran-like
claws and the case for Tactopoda" (PDF). Nature. 514 (7522): 363–366...