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

Homagnostus

Agnostida - Agnostidae

Taxonomy
Homagnostus was named by Howell (1935) [Sepkoski's age data: Cm Dres-l Cm Fran-l; Type species: Agnostus pisiformis obesus [Belt]]. It is not extant.

It was assigned to Agnostidae by Jell and Adrain (2002); and to Agnostida by Sepkoski (2002).

Synonymy list
YearName and author
1935Homagnostus Howell
2002Homagnostus Jell and Adrain p. 385
2002Homagnostus Sepkoski

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

RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumArtiopoda(Hou and Bergstrom)
orderAgnostidaSalter 1864
suborderAgnostinaSalter 1864
superfamilyCondylopygoideaRaymond 1913
familyAgnostidaeM'Coy 1849
genusHomagnostusHowell 1935

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. †Homagnostus Howell 1935
show all | hide all
Homagnostus alaskensis Palmer 1968
Homagnostus captiosus Lazarenko 1966
Homagnostus claviformis Ergaliev 1980
Homagnostus comptus Palmer 1962
Homagnostus hoi Sun 1924
Homagnostus hoiformis Kobayashi 1933
Homagnostus longiformis Ergaliev 1980
Homagnostus obesus Belt 1867
Homagnostus piriformis Ergaliev and Ergaliev 2008
Homagnostus seletensis Ivshin 1962
Homagnostus sulcatus Choi et al. 2004
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
Spines: noneg
Locomotion: slow-movingo
Life habit: epifaunalo
Diet: detritivoreo
Vision: blindf
Created: 2009-02-25 10:33:58
Modified: 2009-02-25 12:33:58
Source: g = genus, f = family, o = order
References: Hendy 2009, Kiessling 2004

Age range: base of the Mayan to the top of the Tremadoc or 505.00000 to 477.70000 Ma

Collections (130 total)


Time interval Ma Country or state Original ID and collection number
Cambrian541.0 - 485.4Norway (Skien-Langesund) Agnostus obesus (194053)
Cambrian541.0 - 485.4Norway (Valdres-Vardal) Agnostus obesus (194063 194064 194065)
Cambrian541.0 - 485.4Norway (Oslo-Asker) Agnostus obesus (194060 194061)
Cambrian541.0 - 485.4Norway (Eiker-Sandsvær) Agnostus obesus (194058)
Cambrian541.0 - 485.4Norway (Sandsvær ) Agnostus obesus (194055 194056)
Cambrian541.0 - 485.4Norway (Ringsaker) Agnostus obesus (194086 194087 194088)
Cambrian541.0 - 485.4Norway Agnostus obesus (194054 194057)
Cambrian541.0 - 485.4Norway (Østerdalen) Agnostus obesus (194090)
Cambrian541.0 - 485.4Norway (Ringerike) Agnostus obesus (194062)
St Davids513.0 - 501.0USA (Idaho/ Utah) H. pisiformis (218)
Marjumian513.0 - 498.5USA (Texas) H. sp. (78734)
Marjumian513.0 - 498.5Greenland (Peary Land) H. sp. (49434)
Mayan505.0 - 501.0Russian Federation (Gorniy Altay) H. sp. (10174)
Mayan505.0 - 501.0Russian Federation (Gorniy Altay Republic) H. bulbus (10175)
Nganasanian501.0 - 498.5Russian Federation (Krasnoyar) Agnostus comptus (131065)
Paibian501.0 - 498.5Sweden (Västra Götaland) H. obesus (133667 133669)
Paibian501.0 - 498.5China (Anhui) H. sp. (127475 127477)
Dresbachian501.0 - 485.4Canada (Yukon) H. captiosus (55226) H. obesus (55224 55231 55277 55280) H. sp. (55211)
Dresbachian501.0 - 485.4USA (Alaska) H. sp., H. alaskensis (64800)
Dresbachian501.0 - 485.4USA (Nevada) H. sp. (240 241)
Dresbachian501.0 - 485.4USA (South Dakota) H. obesus (7194 7195)
Dresbachian501.0 - 485.4USA (Virginia) H. sp. (62205)
Maentwrogian501.0 - 485.4Sweden Agnostus obesus (9890)
Merioneth501.0 - 485.4Argentina (Mendoza) H. pehuenchensis (9818)
Paibian - Taoyuanian501.0 - 485.4China (Liaoning) H. hoiformis (126771)
Sakian501.0 - 485.4Kazakhstan H. alaskensis (118260 118262) H. alaskensis, H. obesus (118264) H. brevis (118328) H. brevis, H. alaskensis, H. longiformis, H. seletensis, H. piriformis, Oncagnostus hoi, H. obesus (118305) H. brevis, H. longiformis, H. seletensis, H. obesus (118327) H. brevis, H. longiformis, H. seletensis, Oncagnostus hoi, H. obesus (118312 118313 118326 118336) H. claviformis (118340 118346) H. claviformis, H. alaskensis (118332) H. comptus (118255) H. laevis, H. alaskensis, H. longiformis, H. seletensis, H. piriformis, Oncagnostus hoi, H. obesus (118329) H. obesus (118263) H. pater, H. piriformis, H. comptus, H. obesus (118254) H. piriformis (118253) H. piriformis, H. obesus (118258) H. pseudobesus (118341) H. pseudobesus, H. claviformis, H. seletensis (118342 118344) H. pseudobesus, H. seletensis (118348) H. seletensis (118330 118339 118345)
Steptoean501.0 - 485.4Canada (Newfoundland and Labrador) H. alaskensis (127447) H. alaskensis, H. obesus (127448) H. obesus (127446)
Steptoean501.0 - 485.4USA (Texas) H. sp. (237)
Steptoean501.0 - 485.4USA (Nevada) H. lumidosus (75271 75272) H. obesus (75268 75269 75270)
Steptoean501.0 - 485.4USA (Nevada and Utah) H. sp. (74910)
Steptoean501.0 - 485.4Canada (British Columbia) H. sp. (54074)
Steptoean - Dolgellian501.0 - 485.4USA (Nevada) H. comptus (10506)
Trempealeauan501.0 - 485.4USA (Texas) H. reductus (216003)
Trempealeauan501.0 - 485.4USA (Wyoming) H. sp. (8938)
Guzhangian500.5 - 497.0China (Zhejiang) H. sp. (125687)
Guzhangian500.5 - 497.0China (Hunan) H. comptus (128933)
Guzhangian500.5 - 497.0China (Jiangsu) H. sp. (127376)
Iverian498.5 - 494.0Australia (South Australia) Oncagnostus hoi (227786)
Sunwaptan498.5 - 485.4Canada (Newfoundland and Labrador) H. sp. A (81272)
Sunwaptan498.5 - 485.4Canada (Alberta) H. obesus (54077 54084)
Taoyuanian498.5 - 485.4China (Shandong) H. hoi (126766 126767 126768)
Taoyuanian498.5 - 485.4Russian Federation (Krasnoyar) Agnostus captiosus (132506 132545)
Taoyuanian498.5 - 485.4Russian Federation (Sakha) Agnostus captiosus (133592)
Taoyuanian498.5 - 485.4China (Hebei) H. hoi (126770) H. sp. (129592)
Taoyuanian498.5 - 485.4China (Henan) H. hoi (126769 129215)
Taoyuanian498.5 - 485.4China (Liaoning) H. sp. (126773)
Taoyuanian498.5 - 485.4China (Zhejiang) Agnostus captiosus (128290 128305 128306)
Taoyuanian498.5 - 485.4South Korea H. obesus (133443 133444 133445 133446 133447 133448 133451 133457 133458) H. sulcatus, H. obesus (133449 133450 133452 133453 133454)
Taoyuanian - Niuchehean498.5 - 485.4China (Anhui) H. zhuangliensis (127532)
Furongian497.0 - 485.4China (Hunan) H. hoiformis (124978) H. sp. (124948)
Furongian497.0 - 485.4South Korea H. obesus (74269)
Furongian497.0 - 485.4USA (California) H. obesus (226276) H. sp. (196115 196117 226278 226279)
Furongian497.0 - 485.4USA (Utah) H. sp. (156451 156458)
Payntonian494.0 - 485.4Australia (Northern Territory) H. sp. nov. (77426)
Gasconadian485.4 - 477.7USA (Texas) H. sp. (282)
Tremadoc485.4 - 477.7USA (Vermont) H. sp. (277)