-
Dibasterium is an
extinct genus of euchelicerate, a
group of
chelicerate arthropods.
Fossils of the
single and type species, D. durgae, have been discovered...
- †
Pycnogonida Megacheira † (possibly
paraphyletic stem-chelicerates)
Dibasterium †
Offacolidae †
Prosomapoda "Synziphosurina" (paraphyletic) Xiphosura...
- are well-developed in the non-prosomapod
euchelicerates Offacolus and
Dibasterium. Lamsdell,
James C. (2012-12-18). "Revised
systematics of Palaeozoic...
-
British mineralogist who
found the
fossils of Offacolus.
Similar to
Dibasterium,
Offacolus possess limb-like
exopods (outer limb branches) on appendage...
-
considered to be synziphosurines. The even
basal euchelicerates Offacolus and
Dibasterium, the
questionable genus Borchgrevinkium, as well as the Dekatriata-related...
- limb arrangement,
however the
number of
segments is
closer to that of
Dibasterium. Unusually, it also
shares some
features with
Habelia like the anal pouch...
-
walking legs may be in fact leg-like
exopods like
those of
Offacolus and
Dibasterium,
while the
actual terminations of
walking legs (endopods) are chelate...
-
Offacolus A euchelicerate, most
common fossil, with over 800
specimens Dibasterium A
euchelicerate Haliestes A sea
spider Xylokorys An
acercostracan marrellomorph...
- "synziphosurine" (early euchelicerate).
Though most
closely related to
Dibasterium and
Offacolus from the
Silurian Herefordshire Lagerstätte, it also shows...
-
Euchelicerata Family: †Offacolidae
Sutton et al., 2002 Type
species †Offacolus
kingi Orr et al., 2000
Genera †Offacolus †
Dibasterium †Setapedites †Bunaia...
