PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Megistaspis (Megistaspidella)

Trilobita - Asaphida - Asaphidae

Taxonomy

Megistaspis (Megistaspidella) was named by Jaanusson (1956). Its type is Entomostracites extenuatus.

It was reranked as Megistaspidella by Jell and Adrain (2002).

It was assigned to Megistaspis by Jaanusson (1956); and to Asaphidae by Jell and Adrain (2002).

Subtaxa

Megistaspis (Megistaspidella) acuticauda, Megistaspis (Megistaspidella) bombifrons, Megistaspis (Megistaspidella) extenuata, Megistaspis (Megistaspidella) gigas

Synonymy list

Year	Name and author
1956	Megistaspis (Megistaspidella) Jaanusson
2002	Megistaspidella Jell and Adrain p. 404

Is something missing? Join the Paleobiology Database and enter the data

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
subgenus	Megistaspidella	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.

Subg. †Megistaspis (Megistaspidella) Jaanusson 1956

show all | hide all

†Megistaspis (Megistaspidella) acuticauda Angelin 1854

†Megistaspis (Megistaspidella) bombifrons Bohlin 1960

†Megistaspis (Megistaspidella) extenuata Wahlenberg 1821

†Megistaspis (Megistaspidella) gigas Angelin 1878

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 et al. 2009, Hendy 2009, Aberhan et al. 2004

Age range: base of the Volkhov to the top of the Valaste or 471.30000 to 465.90000 Ma

Collections (46 total)

Time interval	Ma	Country or state	Original ID and collection number
Hunderum	472.1 - 465.9	Sweden	Megistaspis acuticauda (198059)
Valaste	472.1 - 465.9	Sweden	Megistaspis sp. (198039)
Volkhov	471.3 - 469.1	Russian Federation	Megistaspis acuticauda (157117 157119 157120 157121 157124 157126 157127 157128 157130 157133 157135 157137 157139 157140 157141)
Volkhov	471.3 - 469.1	Norway	Megalaspis gigas (56469)
Volkhov	471.3 - 469.1	Sweden	Megalaspis acuticauda (188266)
Kunda	469.1 - 464.3	Russian Federation	Megistaspis acuticauda (157142 157143 157144 157145 157146 157147 157148 157149)
Kunda	469.1 - 464.3	Sweden	Megalaspis acuticauda (188217 188218 188224 188268 188283 188300 188302) Megalaspis extenuata (188214 188219 188221 188284 188286 188292) Megalaspis extenuata, Megalaspis rudis (188210 188215 188222) Megalaspis gigas (188296 188297 188298)