- The
subphylum Chelicerata (from Neo-Latin, from
French chélicère, from
Ancient Gr**** χηλή (khēlḗ) 'claw, chela' and κέρας (kéras) 'horn')
constitutes one...
-
Offacolidae is a
family of
basal euchelicerate arthropods from the
Ordovician and
Silurian of Europe,
Morocco and
North America. The
family is united...
-
counted as part of the
prosoma based on
different studies and/or taxa) of
euchelicerates, the
origin of the
additional fifth and
sixth leg
pairs in the polymerous...
-
Prosomapoda is a
clade of
euchelicerates including the
groups Xiphosura (horseshoe crabs) and
Planaterga (a
group comprising bunodids, pseudoniscids, chasmataspidids...
-
Offacolus is an
extinct genus of
euchelicerate, a
group of
chelicerate arthropods. Its only species, O. kingi, has been
found in
deposits from the Silurian...
-
Planaterga is a
clade of
prosomapod euchelicerates including several synziphosurid genera (mainly
bunodids and pseudoniscids) and the
group Dekatriata...
- (Xiphosura). It was
later identified as a
grade composed of
various basal euchelicerates,
eventually excluded from the
monophyletic Xiphosura sensu stricto and...
-
Dibasterium is an
extinct genus of
euchelicerate, a
group of
chelicerate arthropods.
Fossils of the
single and type species, D. durgae, have been discovered...
- origin, with the
first segment being highly reduced (a
synapomorphy of
euchelicerates) and
possibly covered by the
preceding carapace. The last 3 segments...
-
Venustulus and its
relatives form a
group made up of
various basal euchelicerate arthropods more
distant to the xiphosurans.
Venustulus is the third...
