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Nahannagnostus

Trilobita - Agnostida - Diplagnostidae

Taxonomy
Nahannagnostus was named by Pratt (1992) [Sepkoski's age data: Cm uMid-u Cm Dres-l Sepkoski's reference number: 1017].

It was assigned to Pseudagnostidae by Westrop et al. (1996); to Diplagnostidae by Whittington et al. (1997); and to Agnostida by Sepkoski (2002).

Synonymy list
YearName and author
1992Nahannagnostus Pratt
1996Nahannagnostus Westrop et al. p. 820
1997Nahannagnostus Whittington et al. p. 368
2002Nahannagnostus Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumMandibulata
classTrilobitaWalch 1771
orderAgnostidaSalter 1864
superfamilyAgnostoideaM'Coy 1849
familyDiplagnostidaeWhitehouse 1936
genusNahannagnostusPratt 1992

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.

Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: low Mg calcitec
Composition 2: chitinc
Entire body: yesg
Adult length: 1.0 to < 10g
Adult width: 1.0 to < 10g
Spines: noneg
Ontogeny: molting, addition of partsc
Environment: marinec
Locomotion: slow-movingo
Life habit: epifaunalo
Diet: detritivoreo
Vision: blindf
Created: 2009-02-25 10:51:49
Modified: 2009-02-25 12:51:49
Source: g = genus, f = family, o = order, c = class
References: Kiessling 2004, Aberhan et al. 2004, Hendy 2009

Age range: Guzhangian or 500.50000 to 497.00000 Ma

Collections (43 total)


Time interval Ma Country or state Original ID and collection number
Ayusokkanian505.0 - 498.5Kazakhstan N. nganasanicus (118177 118184 118191 118245)
Nganasanian501.0 - 498.5Russian Federation (Krasnoyar) Pseudagnostus nganasanicus (131065)
Dresbachian501.0 - 485.4Canada (Newfoundland and Labrador) N. logani (9697 9700)
Dresbachian501.0 - 485.4USA (Wyoming) N. nganasanicus (8076)
Dresbachian501.0 - 485.4Canada (Yukon) N. logani (55211 55213 55215) N. nganasanicus (55216 55217 55221 55222 55279) N. sp. (55232)
Dresbachian501.0 - 485.4USA (South Dakota) N. nganasanicus (7183 7190 7193 7199 7284 7404 8021 8023 8082) N. nganasanious (7182 7184 7201)
Guzhangian500.5 - 497.0China (Hunan) N. nganasanicus (49181 49182 107050 126315 126323 126328 126330 126442 126443)
Taoyuanian498.5 - 485.4South Korea N. pratti (133450 133451 133452 133453 133459)