Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Micragnostus pehuenchensis

Artiopoda - Agnostida - Agnostidae

Taxonomy
Homagnostus pehuenchensis was named by Rusconi (1953).

It was recombined as Micragnostus pehuenchensis by Tortello (2014).

Sister species lacking formal opinion data
M. chayasaensls, M. hoeki, M. insuetus, M. languedocensis

Synonyms
  • Geragnostus intermedius was named by Palmer (1968).

    It was recombined as Micragnostus intermedius by Ludvigsen (1989); it was synonymized subjectively with Micragnostus pehuenchensis by Tortello (2014).
Synonymy list
YearName and author
1953Homagnostus pehuenchensis Rusconi p. 1
1968Geragnostus intermedius Palmer p. 24
1989Micragnostus intermedius Ludvigsen
2014Micragnostus pehuenchensis Tortello p. 19

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—EcdysozoaAguinaldo et al. 1997
—Panarthropoda
phylumArthropodaGravenhorst 1843
RankNameAuthor
classArtiopodaHou and Bergstrom
orderAgnostidaSalter 1864
suborderAgnostinaSalter 1864
superfamilyCondylopygoideaRaymond 1913
familyAgnostidaeM'Coy 1849
genusMicragnostusHowell 1935
speciespehuenchensis(Rusconi 1953)

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.

show all | hide all
Invalid names: Micragnostus intermedius Palmer 1968 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Entire body: yesg
Adult length: 1.0 to < 10g
Adult width: 1.0 to < 10g
Folds: noneg
Ribbing: noneg
Spines: noneg
Internal reinforcement: noneg
Locomotion: slow-movingo
Life habit: epifaunalo
Diet: detritivoreo
Vision: blindf
Created: 2009-06-08 08:43:37
Modified: 2009-06-08 10:43:37
Source: g = genus, f = family, o = order
References: Kiessling 2004, Hendy 2009

Age range: base of the Aksaian to the top of the Tremadoc or 492.80000 to 477.10000 Ma

Collections (55 total)


Time interval Ma Country or state Original ID and collection number
Furongian497.0 - 486.85South Korea Micragnostus intermedius (74269)
Merioneth497.0 - 486.85Argentina (Mendoza) Homagnostus pehuenchensis (9818)
Taoyuanian495.2 - 486.85South Korea Micragnostus intermedius (133444 133446 133458 133464 133465 133467 133471 133474)
Sunwaptan493.5 - 488.9Argentina Micragnostus pehuenchensis (235994)
Sunwaptan493.5 - 488.9Canada (Newfoundland and Labrador) Micragnostus intermedius (81277 81284)
Aksaian492.8 - 491.5Kazakhstan Micragnostus intermedius (118382 118387 118393 118394 118397 118401 118402 118403 118404 118442 118443 118444 118445 118458 118460 118463 118465 118467 118475 118476)
Batyrbaian491.5 - 486.85Kazakhstan Micragnostus intermedius (118895)
Tremadocian486.85 - 477.1Canada (Newfoundland and Labrador) Micragnostus intermedius (81289)
Tremadoc486.4 - 477.1Mexico (Oaxaca) Geragnostus intermedius (9823 9824 9825 9827 9829 9830 9836 9837 9838 9839 9840 9841 9842 9843 9844 9846 9847 9848 9851)
Tremadoc486.4 - 477.1Canada (Northwest Territories) Micragnostus intermedius (192761)