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Hypagnostus parvifrons

Agnostida - Spinagnostidae

Taxonomy
Agnostus parvifrons was named by Linnarsson (1869). It is not extant.

It was recombined as Hypagnostus parvifrons by Jaekel (1909).

Sister species lacking formal opinion data
H. durus, H. hippalus, H. inaequalis, H. lens, H. subparallelus

Synonyms
Synonymy list
YearName and author
1869Agnostus parvifrons Linnarsson
1909Hypagnostus parvifrons Jaekel
1967Hypagnostus correctus Opik
1993Hypagnostus dabashanensis Yang et al.

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Ecdysozoa
—Panarthropoda
phylumArthropodaLatreille 1829
subphylumArtiopoda(Hou and Bergstrom)
RankNameAuthor
orderAgnostidaSalter 1864
suborderAgnostinaSalter 1864
superfamilyCondylopygoideaRaymond 1913
familySpinagnostidaeHowell 1935
subfamilySpinagnostinaeHowell 1935
genusHypagnostusJaeckel 1909
speciesparvifrons(Linnarsson 1869)

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.

†Hypagnostus parvifrons Linnarsson 1869
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Invalid names: Hypagnostus correctus Opik 1967 [synonym], Hypagnostus dabashanensis Yang et al. 1993 [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
Spines: noneg
Locomotion: actively mobileg
Life habit: nektonicg
Diet: suspension feederg
Vision: blindf
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 Dresbachian or 509.00000 to 485.40000 Ma

Collections (102 total)


Time interval Ma Country or state Original ID and collection number
Taijangian509.0 - 504.5China (Hunan) Hypagnostus parvifrons (49149 49156 49159 49270)
Arcadian509.0 - 498.4Canada (New Brunswick) Hypagnostus parvifrons (64540)
Arcadian509.0 - 498.4Canada (Newfoundland and Labrador) Hypagnostus parvifrons (9635)
Middle Cambrian509.0 - 497.0Argentina (Mendoza) Hypagnostus parvifrons (9816)
Middle Cambrian509.0 - 497.0USA (Utah) Hypagnostus parvifrons (77275)
Middle Cambrian509.0 - 497.0Czech Republic (Jince) Hypagnostus parvifrons (76482)
Middle Cambrian509.0 - 497.0Norway Hypagnostus parvifrons (155476 155477 155478)
Middle Cambrian509.0 - 497.0Canada (Newfoundland and Labrador) Hypagnostus parvifrons (9679)
St Davids509.0 - 497.0Canada (British Columbia) Hypagnostus parvifrons (122017 122072)
Taijangian - Wangcunian509.0 - 497.0China (Sichuan) Hypagnostus parvifrons (127061 127062)
Taijangian - Wangcunian509.0 - 497.0China (Shandong) Hypagnostus parvifrons (126900 126901)
Floran504.5 - 503.0Australia (Queensland) Hypagnostus parvifrons (225241)
Menevian504.5 - 499.5Denmark (Bornholm) Hypagnostus parvifrons (75946)
Marjumian504.5 - 497.0Canada (Newfoundland and Labrador) Hypagnostus parvifrons (9632 9636 9637 9639 9641 9643 9644 9668 9669 9671 9673 9678 9681)
Marjumian504.5 - 497.0USA (Utah) Hypagnostus parvifrons (77206 77207 77271 230679 230682)
Wangcunian504.5 - 497.0China (Hunan) Hypagnostus correctus (128923) Hypagnostus parvifrons (49161 49162 49163 49164 49165 49282 49283 49284 49287 49288 49289 128313 128337 128339 128341)
Wangcunian504.5 - 497.0China (Sichuan) Hypagnostus parvifrons (127064 127065)
Wangcunian - Guzhangian504.5 - 497.0China (Sichuan) Hypagnostus correctus (127067)
Wangcunian - Guzhangian504.5 - 497.0China (Zhejiang) Hypagnostus correctus (125535 125540 125541)
Zhanaarykian503.0 - 500.5Kazakhstan Hypagnostus parvifrons (9958 9961 9962 9963 9964 118095 118096 118097 118099 118102)
Guzhangian500.5 - 497.0China (Sichuan) Hypagnostus correctus (127068 127070) Hypagnostus dabashanensis (127069)
Guzhangian500.5 - 497.0China (Hunan) Hypagnostus parvifrons (49166 49169 49173 49174 49175 49176 49177 49180 49303 126287 126303 128344 128347 128362)
Ayusokkanian499.5 - 497.0Kazakhstan Hypagnostus parvifrons (9943 9944 9945 9947 9950 118158 118164 118165 118166 118168 118177)
Dresbachian497.0 - 485.4Canada (Newfoundland and Labrador) Hypagnostus parvifrons (9701 9702 9703)