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Clavagnostidae
Taxonomy
Clavagnostidae was named by Howell (1937). It is not extant. Its type is Clavagnostus.
It was assigned to Agnostida by Whittington et al. (1997), Hong et al. (2003), Bentley et al. (2006); and to Condylopygoidea by Naimark and Pegel (2017).
It was assigned to Agnostida by Whittington et al. (1997), Hong et al. (2003), Bentley et al. (2006); and to Condylopygoidea by Naimark and Pegel (2017).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1937 | Clavagnostidae Howell |
| 1997 | Clavagnostidae Whittington et al. p. 371 |
| 2003 | Clavagnostidae Hong et al. |
| 2006 | Clavagnostidae Bentley et al. p. 172 |
| 2017 | Clavagnostidae Naimark and Pegel p. 1220 |
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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.
Fm. †Clavagnostidae Howell 1937
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Subfm. †Aspidagnostinae Pokrovskaya 1960
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G. †Aspidagnostus Whitehouse 1936
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†Aspidagnostus laevis Palmer 1962
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Invalid names: Aspidagnostus pentagonus Lu and Lin 1989 [synonym], Aspidagnostus taoyuanensis Peng 1987 [synonym]
†Aspidagnostus lunulosus Kryskov 1963
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Invalid names: Aspidagnostus chekiangensis Lu 1974 [synonym], Aspidagnostus stictus Opik 1967 [synonym]
†Aspidagnostus orientalis Yang et al. 1993
†Aspidagnostus parmatus Whitehouse 1936
†Aspidagnostus primitivus Yang et al. 1993
†Aspidagnostus rugosus Palmer 1962
Invalid names: Biragnostus Pokrovskaya 1960 [synonym]
Subfm. †Clavagnostinae Howell 1937
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G. †Clavagnostus Howell 1937
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Subg. †Clavagnostus (Paraclavagnostus) Yang et al. 1993
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†Clavagnostus (Paraclavagnostus) variatus Yang et al. 1993
†Clavagnostus burnsi Jago and Daily 1974
†Clavagnostus calensis Rusconi 1950
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Invalid names: Clavagnostus (Leptagnostus) lanceolatus Lu and Lin 1989 [synonym], Clavagnostus canotensis Rusconi 1951 [synonym]
†Clavagnostus cuneatus Romanenko 1967
†Clavagnostus repandus Westergard 1930
†Clavagnostus spinosus Resser 1938
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Invalid names: Clavagnostus bisectus Opik 1967 [synonym], Clavagnostus longispinus Qian 1982 [synonym], Clavagnostus sulcatus Westergard 1946 [synonym]
†Clavagnostus subconicus Lu and Lin 1989
†Clavagnostus taoyuanensis Lin 1991
†Clavagnostus trispinus Zhou and Yang 1977
Invalid names: Acanthagnostus Qian 1982 [synonym], Culipagnostus Rusconi 1952 [synonym], Leptagnostus Lu and Lin 1989 [synonym], Tomorhachis Resser 1938 [synonym]
G. †Triadaspis Opik 1976
Subfm. †Utagnostinae Jago et al. 2004
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G. †Utagnostus Robinson 1964
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†Utagnostus neglectus Jago 1976
†Utagnostus songae Peng and Robison 2000
†Utagnostus trispinulus Robison 1964
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, o = order | |||||
| References: Whittington et al. 1997, Kiessling 2004 | |||||
Age range: base of the Zhanaarykian to the top of the Paibian or 503.00000 to 494.20000 Ma
Collections (102 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Miaolingian | China | Clavagnostus sp. (228206) | |
| Middle Cambrian | Argentina (Mendoza) | Clavagnostus calensis, Clavagnostus repandus (9811) | |
| Middle Cambrian | India | Clavagnostus calensis, Clavagnostus trispinus (114635) Clavagnostus trispinus (114663) Utagnostus neglectus (114665) | |
| St Davids | North Korea | Clavagnostidae indet. (49082) | |
| Mayan | Russian Federation (Gorniy Altay) | Clavagnostus repandus (10174) | |
| Menevian | USA (Utah) | Clavagnostus repandus, Utagnostus trispinulus (10572) | |
| Marjumian | USA (Utah) | Triadaspis bigeneris, Clavagnostus spinosus (230681) Utagnostus songae (230679) | |
| Marjumian | USA (Alabama) | Aspidagnostus rugosus (75643) | |
| Wangcunian | China (Hunan) | Clavagnostus trispinus (128337 128339) Utagnostus songae (49161) Utagnostus trispinulus (49283) | |
| Wangcunian | China (Henan) | Aspidagnostus primitivus, Aspidagnostus orientalis (127075) | |
| Wangcunian - Guzhangian | China (Hunan) | Clavagnostus taoyuanensis (128927) | |
| Wangcunian - Guzhangian | China (Sichuan) | Clavagnostus repandus (127066 127067) | |
| Wangcunian - Guzhangian | China (Zhejiang) | Clavagnostus lanceolatus (125541) Clavagnostus sp. (125683) | |
| Zhanaarykian | Kazakhstan | Clavagnostus calensis, Clavagnostus repandus (118102) Clavagnostus calensis, Clavagnostus repandus, Utagnostus trispinulus (9958) Utagnostus trispinulus (9962 118097 118099) | |
| Boomerangian | Australia (Tasmania) | Aspidagnostus sp. 1, Paraclavagnostus longus (69972) Aspidagnostus sp. 2, Clavagnostus burnsi (69973) | |
| Guzhangian | China (Yunnan) | Clavagnostus spinosus (219647) | |
| Guzhangian | Antarctica | Utagnostus sp. (227789) | |
| Guzhangian | China (Hunan) | Aspidagnostus laevis (49177 49182) Aspidagnostus lunulosus (49187 49189 49190 126443) Aspidagnostus rugosus (126330 128932) Aspidagnostus taoyuanensis (128933) Clavagnostus burnsi (128930) Clavagnostus repandus (49169 49170 49174 49303 128356) Clavagnostus sulcatus (128931) Clavagnostus trispinus (49168 49175 49295 128365) Clavagnostus trispinus, Clavagnostus repandus (49172 49176) Utagnostus neglectus (128346 128347 128351) | |
| Guzhangian | China (Shandong) | Acanthagnostus longispinus (124885) Clavagnostus longispinus (126818) | |
| Guzhangian | China (Sichuan) | Clavagnostus repandus, Clavagnostus variatus (127068 127069 127070) | |
| Guzhangian | China (Zhejiang) | Aspidagnostus sp., Clavagnostus sp., Clavagnostus subconicus, Aspidagnostus pentagonus (125675) Clavagnostus sp., Clavagnostus sp., Aspidagnostus chekiangensis (125673) | |
| Ayusokkanian | Russian Federation (Altai (Region)) | Clavagnostus cuneatus (10064) | |
| Ayusokkanian | Kazakhstan | Aspidagnostus lunulosus (118239) Clavagnostus calensis (9950) Clavagnostus calensis, Clavagnostus repandus (118158 118164 118165) Clavagnostus repandus (9943 9944 9945 9947 118166 118168) Clavagnostus spinosus (118241) Clavagnostus spinosus, Aspidagnostus lunulosus (118237) Clavagnostus trispinus (118179 118250) Clavagnostus trispinus, Clavagnostus spinosus (118178 118184) Clavagnostus trispinus, Clavagnostus spinosus, Clavagnostus repandus (118177) Triadaspis sp., Clavagnostus spinosus (118191 118236) | |
| Mindyallan | Antarctica | Clavagnostus spinosus (242394) | |
| Paibian | China (Hunan) | Aspidagnostus lunulosus (126145) Aspidagnostus lunulosus, Aspidagnostus rugosus (126132) | |
| Paibian | Russian Federation (Krasnoyar) | Aspidagnostus rugosus (132498) | |
| Paibian | China (Zhejiang) | Aspidagnostus chekiangensis (125559) Aspidagnostus stictus (125546) | |
| Maentwrogian | South Korea | Aspidagnostus sp. (7890) | |
| Steptoean | USA (Nevada) | Aspidagnostus rugosus (75737 75738) | |
| Sakian | Kazakhstan | Aspidagnostus laevis (118253) Aspidagnostus laevis, Aspidagnostus lunulosus, Aspidagnostus rugosus (118254) Aspidagnostus lunulosus (118252) Aspidagnostus lunulosus, Aspidagnostus rugosus (118255) | |
| Dresbachian | Canada (Yukon) | Aspidagnostus laevis (55222 55279) Aspidagnostus rugosus (55282) | |
| Dresbachian | Canada (Newfoundland and Labrador) | Utagnostus trispinulus (9701) | |
| Dresbachian | USA (Nevada) | Aspidagnostus laevis (10505) Aspidagnostus rugosus (75741) |