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Hypagnostus

Agnostida - Spinagnostidae

Synonyms
Synonymy list
YearName and author
1909Hypagnostus Jaeckel
1935Spinagnostus Howell
1937Cyclopagnostus Howell
1982Breviagnostus Liu
1997Hypagnostus Whittington et al. p. 356
2002Hypagnostus Jell and Adrain p. 364
2002Hypagnostus Sepkoski
2004Hypagnostus Paterson and Laurie p. 95
2007Hypagnostus Jago and Cooper p. 475

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Ecdysozoa
—Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumArtiopoda(Hou and Bergstrom)
orderAgnostidaSalter 1864
suborderAgnostinaSalter 1864
superfamilyCondylopygoideaRaymond 1913
familySpinagnostidaeHowell 1935
subfamilySpinagnostinaeHowell 1935
genusHypagnostusJaeckel 1909

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. †Hypagnostus Jaeckel 1909
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†Hypagnostus anhuiensis Lu and Zhu 1980
†Hypagnostus bilobatus Qian and Zhou 1984
†Hypagnostus brevifrons Angelin 1851
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Invalid names: Acadagnostus transversus Yang et al. 1993 [synonym], Hypagnostus brachydolonus Zhou and Yang 1977 [synonym], Hypagnostus kendectasicus Kryskov 1960 [synonym], Hypagnostus parabrevifrons Yang et al. 1993 [synonym]
†Hypagnostus gibber Yang et al. 1993
†Hypagnostus parvifrons Linnarsson 1869
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Invalid names: Hypagnostus correctus Opik 1967 [synonym], Hypagnostus dabashanensis Yang et al. 1993 [synonym]
†Hypagnostus prodigialis Ergaliev and Ergaliev 2008
†Hypagnostus scrobiculatus Westergard 1946
†Hypagnostus transversus Yang et al. 1993
†Hypagnostus truncatus Brogger 1878
†Hypagnostus vulgarus Qian and Qiu 1983
Invalid names: Breviagnostus Liu 1982 [synonym], Cyclopagnostus Howell 1937 [synonym], Spinagnostus Howell 1935 [synonym]
Diagnosis
ReferenceDiagnosis
J. B. Jago and R. A. Cooper 2007See Shergold & Laurie (1997, p. 5), with the amendment that the F3 glabellar furrow may be effaced, as may be the posterior parts of the axial furrows of the pygidium.
Measurements
No measurements are available
Entire body: yesg
Adult length: 1.0 to < 10g
Adult width: 1.0 to < 10g
Spines: noneg
Locomotion: actively mobileg
Life habit: nektonicg
Diet: suspension feederg
Vision: blindf
Comments: LIFE HISTORY: Pelagic, fully motile slow, suspension-feeder according to Bambach et al (2007).g
Created: 2009-02-25 10:15:01
Modified: 2009-09-21 22:37:24
Source: g = genus, f = family
References: Hendy 2009, Whittington et al. 1997

Age range: base of the Taijangian to the top of the Merioneth or 509.00000 to 485.40000 Ma

Collections (180 total)


Time interval Ma Country or state Original ID and collection number
Solvan - Menevian510.2 - 499.5Czech Republic H. umbonatus (73557)
Taijangian509.0 - 504.5China (Hunan) H. parvifrons (49149 49156 49159 49270)
Arcadian509.0 - 498.4Canada (New Brunswick) H. parvifrons (64540)
Arcadian509.0 - 498.4Canada (Newfoundland and Labrador) H. parvifrons (9635)
Middle Cambrian509.0 - 497.0Argentina (Mendoza) H. parvifrons (9816)
Middle Cambrian509.0 - 497.0Czech Republic (Jince) H. parvifrons (76482)
Middle Cambrian509.0 - 497.0Norway H. parvifrons (155476 155477 155478)
Middle Cambrian509.0 - 497.0India H. brevifrons (114665)
Middle Cambrian509.0 - 497.0Canada (Newfoundland and Labrador) H. parvifrons (9679)
Middle Cambrian509.0 - 497.0Czech Republic (Litavka) H. sp. (76455)
Middle Cambrian509.0 - 497.0USA (Utah) H. parvifrons (77275)
St Davids509.0 - 497.0United Kingdom (Shropshire) Agnostus parvifrons (55509)
St Davids509.0 - 497.0Canada (British Columbia) H. parvifrons (122017 122072)
Taijangian - Guzhangian509.0 - 497.0China (Anhui) H. sp. 1, H. sp. 2, H. anhuiensis (127474)
Taijangian - Wangcunian509.0 - 497.0China (Shandong) H. parvifrons (126900 126901)
Taijangian - Wangcunian509.0 - 497.0China (Sichuan) H. parvifrons (127061 127062)
Floran504.5 - 503.0Australia (Queensland) H. parvifrons (225241) H. sp. (225072) H. sp. indet. (225175)
Drumian504.5 - 500.5USA (Utah) H. parvifrons (230679)
Floran - Undillan504.5 - 500.5Australia (Queensland) H. inaequalis (225217)
Floran - Undillan504.5 - 500.5Antarctica H. subparallelus (69505)
Mayan504.5 - 499.5Sweden (Scania) H. denticulatus (225259)
Mayan504.5 - 499.5Kazakhstan H. sp. (10030)
Mayan504.5 - 499.5Russian Federation H. breviceps (10118)
Menevian504.5 - 499.5USA (Utah) H. brevifrons (230681)
Menevian504.5 - 499.5Denmark (Bornholm) H. parvifrons (75946)
Menevian504.5 - 499.5Sweden (Scania) H. nepos (225250)
Marjumian504.5 - 497.0USA (New York) H. sp. (221)
Marjumian504.5 - 497.0USA (Utah) H. parvifrons (77206 77207 77271 230682)
Marjumian504.5 - 497.0Canada (Newfoundland and Labrador) H. lens (9680) H. parvifrons (9632 9636 9637 9639 9641 9643 9644 9668 9669 9671 9673 9678 9681)
Marjumian504.5 - 497.0USA (South Carolina) H. mammillatus (75063)
Marjumian - Guzhangian504.5 - 497.0Mexico H. sp. (236882)
Wangcunian504.5 - 497.0China (Zhejiang) H. hunanicus (125532)
Wangcunian504.5 - 497.0China (Jiangsu) H. bilobatus (127386)
Wangcunian504.5 - 497.0China (Sichuan) H. parvifrons (127064) H. parvifrons, H. vulgarus (127065)
Wangcunian504.5 - 497.0China (Hunan) H. brevifrons (49290 49291 128316 128317 128318 128319 128336 128340) H. brevifrons, H. parvifrons (49161 49162 49163 49164 49165 128313 128337 128341) H. parvifrons (49282 49283 49284 49287 49288 49289 128339) H. sp. 1, H. hunanicus (128922) H. sp., H. correctus, H. hunanicus (128923)
Wangcunian504.5 - 497.0China (Henan) H. vulgarus, H. transversus (127075)
Wangcunian - Guzhangian504.5 - 497.0China (Henan) H. vulgarus, H. transversus (127076)
Wangcunian - Guzhangian504.5 - 497.0China (Zhejiang) H. hunanicus (125554) H. sp., H. brevifrons, H. correctus (125541)
Wangcunian - Guzhangian504.5 - 497.0China (Sichuan) H. brevifrons, Acadagnostus transversus (127066) H. brevifrons, H. correctus, H. parabrevifrons (127067)
Undillan503.0 - 500.5Australia (Queensland) H. clipeus (225220 225233) H. melicus (225223 225242) H. sp. (225229) H. sp. indet. (225216)
Undillan503.0 - 500.5Australia (Queeland) H. sp. indet. (225234)
Zhanaarykian503.0 - 500.5Kazakhstan H. brevifrons, H. truncatus, H. parvifrons (9958 118102) H. truncatus, H. parvifrons (9961 9962 9963 9964 118095 118096 118097 118099)
Boomerangian500.5 - 499.0Australia (Queenslandd) H. hippalus, H. sp. F (225252)
Guzhangian500.5 - 497.0Antarctica H. brevifrons (227789)
Guzhangian500.5 - 497.0China (Henan) H. vulgarus, H. gibber (127077)
Guzhangian500.5 - 497.0China (Hunan) H. brachydolonus (128933) H. brachydolonus, H. kendectasicus (128932) H. brevifrons (49168 49170 49172 49178 49295 126304 126308 126314 126315 126316 126317 126318 126320 126322 126323 126327 126440 126443 128343 128350 128351 128352 128353 128354 128355 128359 128361 128364 128365) H. brevifrons, H. parvifrons (49166 49173 49176 49177 128347) H. parvifrons (49169 49174 49175 49180 49303 126287 126303 128344 128362) H. sp. (128931)
Guzhangian500.5 - 497.0China (Sichuan) H. correctus (127068 127070) H. dabashanensis (127069)
Ayusokkanian499.5 - 497.0Kazakhstan H. brevifrons, H. parvifrons (9943 9944 9945 9947 9950 118158 118164 118165 118166 118168) H. brevifrons, H. parvifrons, H. scrobiculatus (118177) H. prodigialis (118242)
Ayusokkanian499.5 - 497.0Russian Federation (Altai (Region)) H. correctiformis, H. durus (10064)
Dresbachian497.0 - 485.4USA (Alaska) H. sp. (64796)
Dresbachian497.0 - 485.4Canada (Newfoundland and Labrador) H. parvifrons (9701 9702 9703)
Merioneth497.0 - 485.4Argentina (Mendoza) H. huilichensis (9817)
Merioneth497.0 - 485.4USA (Vermont) H. sp., Spinagnostus sp. (217)