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Megistaspis (Ekeraspis)

Trilobita - Asaphida - Asaphidae

Synonymy list
YearName and author
1956Megistaspis (Ekeraspis) Tjernvik
1999Megistaspis (Ekeraspis) Hoel
2002Ekeraspis Jell and Adrain p. 370

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Ecdysozoa
—Panarthropoda
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
RankNameAuthor
classTrilobitaWalch 1771
subclassLibristoma
orderAsaphidaSalter 1864
superfamilyAsaphoideaSalter 1864
familyAsaphidaeBurmeister 1843
subfamilyIsotelinaeAngelin 1854
genusMegistaspisJaanusson 1956
subgenusEkeraspisTjernvik 1956

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Subg. †Megistaspis (Ekeraspis) Tjernvik 1956
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Invalid names: Megistaspis (Ekeraspis) albertensis Walcott 1925 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Entire body: yesg
Adult length: 10 to < 100g
Adult width: 10 to < 100g
Spines: minorg
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: fast-movingo
Life habit: low-level epifaunalo
Diet: carnivorec
Vision: well-developedf
Created: 2009-06-08 11:56:30
Modified: 2009-06-08 13:56:30
Source: g = genus, f = family, o = order, c = class
References: Hendy 2009, Hendy et al. 2009, Aberhan et al. 2004

Age range: base of the Tulean to the top of the Floian or 480.80000 to 470.00000 Ma

Collections (18 total)


Time interval Ma Country or state Original ID and collection number
Tremadoc486.5 - 477.7Canada (Alberta) Megistaspis sp. (10951)
Tremadoc486.5 - 477.7France (Montagne Noire) Ekeraspis sp. (20819)
Stairsian485.4 - 478.6USA (Nevada) Megistaspis nevadensis (104502)
Stairsian - Tulean485.4 - 474.9Canada (British Columbia) Kayseraspis euclides (50169)
Tremadocian - Floian485.4 - 470.0Sweden Plesiomegalaspis heroides (3194)
Tremadocian - Floian485.4 - 470.0Norway (Eiker-Sandsvær) Megistaspis heroides (190881 190882 190887 190978)
Tremadocian - Floian485.4 - 470.0Norway (Oslo-Asker) Megistaspis heroides (190987)
Tremadocian - Floian485.4 - 470.0Norway (Oslo-Asker") Megistaspis armata (190980)
Tremadocian - Floian485.4 - 470.0Norway Megistaspis armata (190982)
Lancefieldian484.3 - 474.9Australia (Tasmania) Ekeraspis sp. (2671) Megistaspis euclides (165773)
Tulean480.8 - 474.9USA (Nevada) Megistaspis floweri (104545)
Arenig478.6 - 466.0France (Montagne Noire) Ekeraspis sp. (20828)
Floian477.7 - 470.0France (Montagne Noire) Megistaspis filacovi (20827)
Fennian470.7 - 468.0France (Montagne Noire) Ekeraspis sp. (20825)