PBDB Taxon

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Megistaspis

Trilobita - Asaphida - Asaphidae

Taxonomy

Megistaspis was named by Jaanusson (1956) [Sepkoski's age data: O Trem-u O Llvi replacement name for Megalaspis ]. Its type is Trilobites limbatus.

It was assigned to Isotelinae by Hoel (1999); to Asaphidae by Jell and Adrain (2002); and to Asaphida by Sepkoski (2002).

Species

Megalaspis belemnurus, Megalaspis lata, Megalaspis pugiocauda, Megalaspis rudis, Megalaspis saltaensis, M. (Ekeraspis), M. (Megistaspidella), M. (Megistaspis), M. (Paramegistaspis) (syn. M. (Varvaspis)), M. (Rhinoferus), M. limbatus

Synonyms

Megalaspis was named by Angelin (1851) [Sepkoski's age data: Cm Fran-u Cm Trep-u Sepkoski's reference number: 81]. It is not extant. Its type is Megalaspis limbata.

It was replaced with Megistaspis by Jaanusson (1956), Jaanusson (1956), Harrington et al. (1959), Jell and Adrain (2002).

It was assigned to Ogygiinae by Harrington and Leanza (1957); and to Asaphida by Sepkoski (2002).
Megalaspis rudis was named by Angelin (1854).

It was considered a nomen dubium by Bohlin (1960).

Synonymy list

Year	Name and author
1851	Megalaspis Angelin
1854	Megalaspis rudis Angelin figs. PI. XVII fig. 5 ·
1956	Megistaspis Jaanusson
1957	Megalaspis Harrington and Leanza
1999	Megistaspis Hoel
2002	Megistaspis Jell and Adrain p. 404
2002	Megalaspis Sepkoski
2002	Megistaspis Sepkoski

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Ecdysozoa	Aguinaldo et al. 1997
—	Panarthropoda
phylum	Arthropoda	Latreille 1829
subphylum	Artiopoda	(Hou and Bergstrom)

Rank	Name	Author
class	Trilobita	Walch 1771
subclass	Libristoma
order	Asaphida	Salter 1864
superfamily	Asaphoidea	Salter 1864
family	Asaphidae	Burmeister 1843
subfamily	Isotelinae	Angelin 1854
genus	Megistaspis	Jaanusson 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.

G. †Megistaspis Jaanusson 1956

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Subg. †Megistaspis (Ekeraspis) Tjernvik 1956

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†Megistaspis (Ekeraspis) armata Tjernvik 1956

†Megistaspis (Ekeraspis) euclides Walcott 1925

Invalid names: Megistaspis (Ekeraspis) albertensis Walcott 1925 [synonym]

†Megistaspis (Ekeraspis) floweri Ross 1970

†Megistaspis (Ekeraspis) heroides Brøgger 1882

†Megistaspis (Ekeraspis) nevadensis Ross 1970

Subg. †Megistaspis (Megistaspidella) Jaanusson 1956

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