PBDB Taxon

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Kormagnostus

Agnostida - Agnostidae

Taxonomy

Kormagnostus was named by Resser (1938) [Sepkoski's age data: Cm uMid-u Cm Dres-l].

It was assigned to Peronopsinae by Palmer (1954); to Agnostidae by Westrop et al. (1996), Whittington et al. (1997); and to Agnostida by Sepkoski (2002).

Species

K. boltoni, K. clavatus, K. copelandi, K. cuchillensis, K. inventus, K. minutus (syn. Litagnostus latilimbatus, K. taoyuanensis), K. seclusus (syn. K. simplex)

Synonymy list

Year	Name and author
1938	Kormagnostus Resser
1954	Kormagnostus Palmer p. 59
1996	Kormagnostus Westrop et al. p. 812
1997	Kormagnostus Whittington et al. p. 345
2002	Kormagnostus Sepkoski

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Ecdysozoa	Aguinaldo et al. 1997
—	Panarthropoda
phylum	Arthropoda	Latreille 1829

Rank	Name	Author
subphylum	Artiopoda	(Hou and Bergstrom)
order	Agnostida	Salter 1864
suborder	Agnostina	Salter 1864
superfamily	Condylopygoidea	Raymond 1913
family	Agnostidae	M'Coy 1849
genus	Kormagnostus	Resser 1938

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.

G. †Kormagnostus Resser 1938

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†Kormagnostus boltoni Westrop et al. 1996

†Kormagnostus clavatus Lu and Lin 1989

†Kormagnostus copelandi Westrop et al. 1996

†Kormagnostus cuchillensis Rusconi 1954

†Kormagnostus inventus Shergold 1982

†Kormagnostus minutus Schrank 1975

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Invalid names: Kormagnostus taoyuanensis Peng 1987 [synonym], Litagnostus latilimbatus Qian and Zhou 1984 [synonym]

†Kormagnostus seclusus Walcott 1884

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Invalid names: Kormagnostus simplex Resser 1938 [synonym]

Diagnosis

Reference	Diagnosis
A. R. Palmer 1954	Cephalon with anterior lobe of glabella completely or nearly completely effaced; basal glabellar lobes present. Pygidium with broad, elongate, well-defined axial lobe that is bluntly rounded posteriorly and extends to or nearly to the marginal furrow. Posterolateral marginal spines usually present.

Measurements

No measurements are available

Entire body:

yesg

Adult length:

1.0 to < 10g

Adult width:

1.0 to < 10g

Spines:

noneg

Locomotion:

slow-movingo

Life habit:

epifaunalo

Diet:

detritivoreo

Vision:

blindf

Created:

2009-02-25 10:13:39

Modified:

2009-02-25 12:13:39

Source: g = genus, f = family, o = order

References: Hendy 2009, Kiessling 2004

Age range: base of the Guzhangian to the top of the Paibian or 500.50000 to 494.20000 Ma

Collections (194 total)

Time interval	Ma	Country or state	Original ID and collection number
Cambrian	538.8 - 486.85	USA (South Dakota)	K. sp. (231)
Miaolingian	506.5 - 497.0	China	K. sp. (228206)
Middle Cambrian	506.5 - 497.0	Argentina (Mendoza)	K. beltensis, K. seclusus (9811 9815)
Middle Cambrian	506.5 - 497.0	Canada (Newfoundland and Labrador)	K. copelandi (9676 9679)
Menevian	504.5 - 499.5	USA (South Dakota)	K. beltensis (8243 8272 8273) K. beltensis, K. seclusus (8248 8275) K. seclusus (8239 8245 8246)
Menevian	504.5 - 499.5	Greenland (Peary Land)	K. seclusus (49482 49484 49485)
Marjumian	504.5 - 497.0	Canada (Newfoundland and Labrador)	K. copelandi (9636 9637 9638 9640 9641 9642 9643 9644 9646 9668 9669 9671 9672 9678) K. copelandia (9634) K. seclusus (9695)
Marjumian	504.5 - 497.0	Canada (Quebec)	K. simplex (235503)
Marjumian	504.5 - 497.0	USA (Texas)	K. sp. (228 78733 78734 78735 78739 78740)
Marjumian	504.5 - 497.0	Greenland (Peary Land)	K. seclusus (49433 49434 49435 49449 49450 49453 49454 49481 49483)
Wangcunian	504.5 - 497.0	China (Shandong)	K. sp. (126902)
Wangcunian - Guzhangian	504.5 - 497.0	China (Hunan)	K. taoyuanensis (128927)
Guzhangian	500.5 - 497.0	China (Jiangsu)	Litagnostus latilimbatus (127387)
Guzhangian	500.5 - 497.0	China (Zhejiang)	K. clavatus (125544) K. sp. (125675 125687)
Guzhangian	500.5 - 497.0	USA (Texas)	K. simplex (208647 208648 208649 208663 208668 208671 208678 208684 208685 208686 208712 208713 208733 208759 208760 208765 208766 208769 208771 208772 208773 208775 208776 208848 208855 208986)
Guzhangian	500.5 - 497.0	China (Hunan)	K. minutus (49178 49179 49181 49182 49184 126317 126318 126322 126323 126324 126325 126327 126328 126329 126330 126346 126347 126348 126439 126440) K. sp. (128929) K. speciosus, K. taoyuanensis (128931) K. taoyuanensis (128930 128933)
Guzhangian	500.5 - 497.0	China (Yunnan)	K. minutus (219647)
Ayusokkanian	499.5 - 497.0	Kazakhstan	Kormagnostella minutus (118177 118178 118179 118248 118250) K. simplex (118236 118238 118239) K. simplex, Kormagnostella minutus (118186 118191)
Paibian	497.0 - 494.2	China (Zhejiang)	K. clavatus (125556)
Sakian	497.0 - 492.8	Kazakhstan	Kormagnostella inventa (118310 118312 118313 118326 118327 118337 118341 118346 118347 118348 118367 118374 118375)
Dresbachian	497.0 - 486.85	USA (Wyoming)	K. seclusus (8076) K. simplex (8957 8958 9048 9049 9052 9054 9056 9057 9059) K. sp. (224 225 226 227 8956)
Dresbachian	497.0 - 486.85	France	K. sp. (56191)
Dresbachian	497.0 - 486.85	Canada (Newfoundland and Labrador)	K. boltoni (9696 9697) K. sp. (9693) K. sp., K. seclusus (9694)
Dresbachian	497.0 - 486.85	Canada (Yukon)	K. beltensis, K. seclusus (55210 55211 55213) K. flati (55222 55279) K. robisoni (55217 55220) K. seclusus (55215)
Dresbachian	497.0 - 486.85	USA (South Dakota)	K. seclusus (7182 7183 7184 7186 7187 7190 7199 7201 7277 7400 8021 8023)
Furongian	497.0 - 486.85	South Korea	K. inventus (74269)
Furongian	497.0 - 486.85	USA (Utah)	K. sp. (156419)
Taoyuanian	495.2 - 486.85	China (Liaoning)	Kormagnostella minuta (126773)
Taoyuanian	495.2 - 486.85	South Korea	K. inventus (133443 133444 133445 133446 133447 133448 133449 133450 133451 133452 133453 133455 133457 133458 133459 133461 133462 133464 133467 133470 133471)