-
Xiphosura (/zɪfoʊˈsjʊərə/; from
Ancient Gr**** ξίφος (xíphos) 'sword' and οὐρά (ourá) 'tail', in
reference to its sword-like telson) is an
order of arthropods...
- scorpions) and the
extant Xiphosura (horseshoe crabs). The term was
originally used by
James Dwight Dana to
refer to
Xiphosura only, but was
emended by...
-
appendages form
spinnerets that
extrude silk,
while those of
horseshoe crabs (
Xiphosura) form gills. Like all arthropods, chelicerates'
bodies and appendages...
-
Chelicerata Order:
Xiphosura Family:
Limulidae Genus:
Limulus O. F. Müller, 1785 Type
species Monoculus polyphemus Linnaeus, 1758
Synonyms Xiphosura...
-
identified as the
group labelled "Euchelicerata".) A 2019
analysis nests Xiphosura deeply within Arachnida.
Discovering relationships within the arachnids...
-
include Limulus cyclops,
Xiphosura americana, and
Polyphemus occidentalis. It is the tail that
earns this
order its name
Xiphosura,
which derives from the...
- ago in the Cretaceous.
Limulidae is the only
extant family of the
order Xiphosura, and
contains all four
living species of
horseshoe crabs: Carcinoscorpius...
-
Dibasterium †
Offacolidae †
Prosomapoda "Synziphosurina" (paraphyletic)
Xiphosura Dekatriata Chasmataspidida †
Houia †
Winneshiekia †
Eurypterida † Arachnida...
-
Prosomapoda is a
clade of
euchelicerates including the
groups Xiphosura (horseshoe crabs) and
Planaterga (a
group comprising bunodids, pseudoniscids,...
- The
largest animal currently alive is the blue whale. The
maximum recorded weight was 190
tonnes (209 US tons) for a
specimen measuring 27.6
metres (91 ft)...
