-
Helmetia is an
extinct genus of
arthropod from the
middle Cambrian (Wuliuan).
Fossils of the type
species Helmetia expansa have been
found in the Burgess...
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incomplete tergite fusion.
These members,
which formerly comprised the
order Helmetiida (which
currently only
contains Helmetia,
Rhombicalvaria and Kuamaia),...
- Kingdom:
Animalia Phylum:
Arthropoda Subclass: †Conciliterga Order: †
Helmetiida Family: †Tegopeltidae Genus: †Saperion Hou, Ramsköld & Bergström, 1991...
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Concilioterga Order
Helmetiida Nectopleura (e.g. Nektaspida)
Naraoia Petalopleura Order Xandarellida Trilobites,
subclass Trilobita...
- †Strabopida
Order †Sinoburiida
Order †Xandarellida
Order †Nectaspidida
Order †
Helmetiida †
Order †Eodiscina
Order †Olenellina
Order †Asaphida
Order †Aulacopleurida...
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classification Domain:
Eukaryota Kingdom:
Animalia Phylum:
Arthropoda Order: †
Helmetiida Family: †Tegopeltidae Genus: †Tegopelte
Simonetta and
Delle Cave, 1975...
- artiopods.
Within this taxon, It is also
classified as
helmetiids (Order
Helmetiida,
Family Helmetiidae)
alongside similar forms such as Helmetia, Haifengella...
