PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Brachymetopus (Acutimetopus)

Artiopoda - Proetida - Brachymetopidae

Taxonomy

Brachymetopus (Acutimetopus) was named by Hahn and Hahn (1985).

It was assigned to Brachymetopus by Hahn and Hahn (1985), Mychko (2025).

Subtaxa

Brachymetopus (Acutimetopus) caucasicus, Brachymetopus (Acutimetopus) jesenicianus

Species lacking formal opinion data

Brachymetopus ararat, Brachymetopus bormanus, Brachymetopus coignouides, Brachymetopus dunstani, Brachymetopus edwardsi, Brachymetopus gemma, Brachymetopus indianwellsensis, Brachymetopus oblongus, Brachymetopus ornatus, Brachymetopus ouralicus, Brachymetopus ouralicus, Brachymetopus ouralicus, Brachymetopus parvus, Brachymetopus regularis, Brachymetopus senckenbergianus, Brachymetopus spinosiformis, Brachymetopus sucellus, Brachymetopus vosegus

Synonymy list

Year	Name and author
1985	Brachymetopus (Acutimetopus) Hahn and Hahn
2025	Brachymetopus (Acutimetopus) Mychko p. 7

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Ecdysozoa	Aguinaldo et al. 1997
—	Panarthropoda
phylum	Arthropoda	Gravenhorst 1843
class	Artiopoda	Hou and Bergstrom

Rank	Name	Author
class	Trilobita	Walch 1771
order	Proetida	Fortey and Owens 1975
superfamily	Aulacopleuroidea	(Angelin 1854)
family	Brachymetopidae	Prantl and Pribyl 1951
subfamily	Brachymetopinae	Prantl and Pribyl 1950
genus	Brachymetopus
subgenus	Acutimetopus	Hahn and Hahn 1985

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. †Brachymetopus (Acutimetopus) Hahn and Hahn 1985

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†Brachymetopus (Acutimetopus) caucasicus Weber 1944

†Brachymetopus (Acutimetopus) jesenicianus Hahn and Hahn 1977

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

low Mg calcitec

Composition 2:

chitinc

Ontogeny:

molting, addition of partsc

Environment:

marinec

Locomotion:

fast-movingc

Life habit:

low-level epifaunalc

Diet:

deposit feedero

Vision:

well-developedf

Created:

2009-12-19 02:32:28

Modified:

2009-12-19 04:32:28

Source: f = family, o = order, c = class

References: Fortey and Owens 1999, Whittington et al. 1997, Aberhan et al. 2004

Age range: base of the Gzhelian to the top of the Changhsingian or 303.70000 to 251.90200 Ma

Collections (3 total)

Time interval	Ma	Country or state	Original ID and collection number
Gzhelian	303.7 - 298.9	Slovenia	Brachymetopus jesenicianus (67112 67114)
Changhsingian	254.14 - 251.902	Russian Federation	Brachymetopus caucasicus (240900)