†Megistaspis (Ekeraspis) Tjernvik 1956 (trilobite)

Trilobita - Asaphida - Asaphidae

Alternative spelling: Ekeraspis

Parent taxon: Megistaspis according to O. A. Hoel 1999

See also Jell and Adrain 2002

Sister taxa: Megistaspis (Megistaspidella), Megistaspis (Megistaspis), Megistaspis (Paramegistaspis), Megistaspis (Rhinoferus), Megistaspis limbatus, Megalaspis belemnurus, Megalaspis saltaensis, Megalaspis pugiocauda, Megalaspis lata, Megalaspis rudis

Subtaxa: Megistaspis (Ekeraspis) armata Megistaspis (Ekeraspis) euclides Megistaspis (Ekeraspis) floweri Megistaspis (Ekeraspis) heroides Megistaspis (Ekeraspis) nevadensis

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Type: Plesiomegalaspis (Ekeraspis) armata

Ecology: fast-moving low-level epifaunal carnivore

Distribution:

• Fennian of France (1 collection)

• Arenig of France (1)

• Ordovician of Australia (2), Canada (1: British Columbia), France (1), Norway (7), Sweden (1), United States (2: Nevada)

• Tremadoc of Canada (1: Alberta), France (1)

Total: 18 collections each including a single occurrence

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