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Extrania trigona

Trilobita - Ptychopariida - Lisaniidae

Taxonomy
Extrania trigona was named by Yang et al. (1993). It is not extant. Its type locality is Xiuzigou, bed 10b, which is in a Wangcunian/Guzhangian slope limestone/shale in the Xijiadian Formation of China.

Synonymy list
YearName and author
1993Extrania trigona Yang et al.

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Ecdysozoa
—Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumArtiopoda(Hou and Bergstrom)
classTrilobitaWalch 1771
subclassLibristoma
orderPtychopariidaSwinnerton 1915
familyLisaniidaeChang 1963
genusExtraniaQian 1983
speciestrigona

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.

†Extrania trigona Yang et al. 1993
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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: carnivorec
Vision: well-developedf
Created: 2010-01-04 05:23:59
Modified: 2010-01-04 07:23:59
Source: f = family, c = class
References: Whittington et al. 1997, Aberhan et al. 2004

Age range: base of the Wangcunian to the top of the Guzhangian or 504.50000 to 497.00000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Wangcunian - Guzhangian504.5 - 497.0China (Henan) Extrania trigona (type locality: 127076)