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Neogriffithides extremorientalis

Trilobita - Proetida - Phillipsiidae

Taxonomy
Neogriffithides extremorientalis was named by Flick and Shiino (2021). Its type specimen is UMUT PA33621, a cephalon/head (cranidium), and it is a 3D body fossil. Its type locality is KF212, Matashirosawa Valley, Shigejisawa Valley, Kamiyasse, Miyagi Prefecture, which is in a Wordian offshore shelf shale in the Hoso-o Formation of Japan.

Synonymy list
YearName and author
2021Neogriffithides extremorientalis Flick and Shiino pp. 110 - 113 figs. Text-fig. 13, Plate 5, Figs 5 –17

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
RankNameAuthor
classTrilobitaWalch 1771
orderProetidaFortey and Owens 1975
superfamilyProetoideaHawle and Corda 1847
familyPhillipsiidaeOehlert 1886
subfamilyBollandiinaeHahn and Brauckmann 1988
genusNeogriffithides
speciesextremorientalis

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.

Neogriffithides extremorientalis Flick and Shiino 2021
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Diagnosis
ReferenceDiagnosis
U. Flick and Y. Shiino 2021Glabella strongly vaulted, largely overhanging the anterior border, the glabella slightly constricted at γ and being the broadest at δ. Frontal lobe very short. L 1 of considerable size, S 1 reaching the occipital furrow but becoming very shallow posteriorly. Palpebral lobe of moderate size, projecting only little laterally. Section between ε and ζ strait and very long. Genal angle well rounded. Pygidium of semielliptical to slightly parabolic outline. Axis bearing 8 rings, the first one being considerably shorter than the others. 6 pairs of pleural ribs, becoming gradually less distinct posteriorly, the last one being reduced to a soft elevation only observable on well-preserved specimens.
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 02:34:58
Modified: 2009-12-19 04:34:58
Source: f = family, o = order, c = class
References: Whittington et al. 1997, Aberhan et al. 2004, Fortey and Owens 1999

Age range: Wordian or 268.80000 to 265.10000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Wordian268.8 - 265.1Japan Neogriffithides extremorientalis (224525 type locality: 224526)