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Metacryphaeus meloi

Artiopoda - Phacopida - Calmoniidae

Taxonomy
Metacryphaeus meloi was named by Carvalho et al. (1997). Its type specimen is MCT N. 6 822-I, a cephalon/head, and it is a mold. Its type locality is Oiti (= Oitis), which is in an Eifelian/Givetian marine sandstone in the Pimenteira Formation of Brazil.

Sister species lacking formal opinion data
M. boulei, M. cornutus, M. giganteus, M. praecursor, M. venustus

Synonymy list
YearName and author
1997Metacryphaeus meloi Carvalho et al. pp. 6 - 9 figs. 3A-I
2016Metacryphaeus meloi Meira et al. pp. 468 - 470 fig. 3.1–5

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—EcdysozoaAguinaldo et al. 1997
—Panarthropoda
phylumArthropodaGravenhorst 1843
classArtiopodaHou and Bergstrom
RankNameAuthor
classTrilobitaWalch 1771
orderPhacopidaSalter 1864
suborderPhacopinaStruve 1959
superfamilyAcastoidea
familyCalmoniidaeDelo 1935
genusMetacryphaeusReed 1907
speciesmeloi

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.

†Metacryphaeus meloi Carvalho et al. 1997
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Diagnosis
ReferenceDiagnosis
M. G. P. Carvalho et al. 1997Cephalon subtriangular, with short median frontal process; glabella densely covered with small, relatively subdued tubercles; genal angles bluntly pointed; eyes distinctly separated from axial furrows, moderately oblique (exsag.). Pygidial pleurae terminate as blunt spines; axial rings convex forward medially.
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: carnivoresubo
Vision: well-developedf
Created: 2009-12-15 22:58:06
Modified: 2009-12-16 00:58:06
Source: f = family, subo = suborder, c = class
References: Fortey and Owens 1999, Whittington et al. 1997, Aberhan et al. 2004

Age range: Early/Lower Givetian or 387.95000 to 385.90000 Ma

Collections (4 total)


Time interval Ma Country or state Original ID and collection number
Eifelian - Early/Lower Givetian393.47 - 385.9Brazil (Piauí) Metacryphaeus meloi (229078)
Eifelian - Givetian393.47 - 382.31Brazil (Piaui) Metacryphaeus sp. (37170 type locality: 37171)
Early/Lower Givetian387.95 - 385.9Brazil (Piaui) Metacryphaeus meloi (214597)