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

Clavagnostidae

Agnostida - 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) and Hong et al. (2003); and to Condylopygoidea by Naimark and Pegel (2017).

Synonymy list
YearName and author
1937Clavagnostidae Howell
1997Clavagnostidae Whittington et al. p. 371
2003Clavagnostidae Hong et al.
2017Clavagnostidae Naimark and Pegel p. 1220

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
familyClavagnostidaeHowell 1937
familyClavagnostidaeHowell 1937

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
show all | hide all
Subfm. †Aspidagnostinae Pokrovskaya 1960
hide
G. †Aspidagnostus Whitehouse 1936
+
†Aspidagnostus laevis Palmer 1962
+
Invalid names: Aspidagnostus pentagonus Lu and Lin 1989 [synonym], Aspidagnostus taoyuanensis Peng 1987 [synonym]
†Aspidagnostus lunulosus Kryskov 1963
+
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
hide
G. †Clavagnostus Howell 1937
+
Subg. †Clavagnostus (Paraclavagnostus) Yang et al. 1993
+
†Clavagnostus burnsi Jago and Daily 1974
†Clavagnostus calensis Rusconi 1950
+
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
+
Invalid names: Clavagnostus longispinus Qian 1982 [synonym], Clavagnostus sulcatus Westergard 1946 [synonym]
†Clavagnostus subconicus Lu and Lin 1989
†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
hide
G. †Paraclavagnostus Yang et al. 1993
+
†Paraclavagnostus longus Jago et al. 2004
G. †Utagnostus Robinson 1964
hide
†Utagnostus neglectus Jago 1976
†Utagnostus songae Peng and Robison 2000
†Utagnostus trispinulus Robison 1964
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Locomotion: slow-movingo
Life habit: epifaunalo
Diet: detritivoreo
Vision: blindf
Created: 2009-12-13 02:16:37
Modified: 2009-12-13 04:16:37
Source: f = family, o = order
References: Kiessling 2004, Whittington et al. 1997

Age range: base of the Zhanaarykian to the top of the Maentwrogian or 503.00000 to 496.80000 Ma

Collections (101 total)


Time interval Ma Country or state Original ID and collection number
Middle Cambrian509.0 - 497.0China Clavagnostus sp. (228206)
Middle Cambrian509.0 - 497.0Argentina (Mendoza) Clavagnostus calensis, Clavagnostus repandus (9811)
Middle Cambrian509.0 - 497.0India Clavagnostus calensis, Clavagnostus trispinus (114635) Clavagnostus trispinus (114663) Utagnostus neglectus (114665)
St Davids509.0 - 497.0North Korea Clavagnostidae indet. (49082)
Mayan504.5 - 499.5Russian Federation (Gorniy Altay) Clavagnostus repandus (10174)
Menevian504.5 - 499.5USA (Utah) Clavagnostus repandus, Utagnostus trispinulus (10572) Triadaspis bigeneris, Clavagnostus spinosus (230681)
Marjumian504.5 - 497.0USA (Alabama) Aspidagnostus rugosus (75643)
Marjumian504.5 - 497.0USA (Utah) Utagnostus songae (230679)
Wangcunian504.5 - 497.0China (Hunan) Clavagnostus trispinus (128337 128339) Utagnostus songae (49161) Utagnostus trispinulus (49283)
Wangcunian504.5 - 497.0China (Henan) Aspidagnostus primitivus, Aspidagnostus orientalis (127075)
Wangcunian - Guzhangian504.5 - 497.0China (Hunan) Clavagnostus taoyuanensis (128927)
Wangcunian - Guzhangian504.5 - 497.0China (Sichuan) Clavagnostus repandus (127066 127067)
Wangcunian - Guzhangian504.5 - 497.0China (Zhejiang) Clavagnostus lanceolatus (125541) Clavagnostus sp. (125683)
Zhanaarykian503.0 - 500.5Kazakhstan Clavagnostus calensis, Clavagnostus repandus (118102) Clavagnostus calensis, Clavagnostus repandus, Utagnostus trispinulus (9958) Utagnostus trispinulus (9962 118097 118099)
Boomerangian500.5 - 499.0Australia (Tasmania) Aspidagnostus sp. 1, Paraclavagnostus longus (69972) Aspidagnostus sp. 2, Clavagnostus burnsi (69973)
Guzhangian500.5 - 497.0China (Yunnan) Clavagnostus spinosus (219647)
Guzhangian500.5 - 497.0China (Zhejiang) Aspidagnostus sp., Clavagnostus sp., Clavagnostus subconicus, Aspidagnostus pentagonus (125675) Clavagnostus sp., Clavagnostus sp., Aspidagnostus chekiangensis (125673)
Guzhangian500.5 - 497.0China (Sichuan) Clavagnostus repandus, Clavagnostus variatus (127068 127069 127070)
Guzhangian500.5 - 497.0China (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)
Guzhangian500.5 - 497.0Antarctica Utagnostus sp. (227789)
Guzhangian500.5 - 497.0China (Shandong) Acanthagnostus longispinus (124885) Clavagnostus longispinus (126818)
Ayusokkanian499.5 - 497.0Kazakhstan 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)
Ayusokkanian499.5 - 497.0Russian Federation (Altai (Region)) Clavagnostus cuneatus (10064)
Maentwrogian497.0 - 496.8South Korea Aspidagnostus sp. (7890)
Paibian497.0 - 494.0Russian Federation (Krasnoyar) Aspidagnostus rugosus (132498)
Paibian497.0 - 494.0China (Hunan) Aspidagnostus lunulosus (126145) Aspidagnostus lunulosus, Aspidagnostus rugosus (126132)
Paibian497.0 - 494.0China (Zhejiang) Aspidagnostus chekiangensis (125559) Aspidagnostus stictus (125546)
Steptoean497.0 - 493.5USA (Nevada) Aspidagnostus rugosus (75737 75738)
Sakian497.0 - 492.8Kazakhstan Aspidagnostus laevis (118253) Aspidagnostus laevis, Aspidagnostus lunulosus, Aspidagnostus rugosus (118254) Aspidagnostus lunulosus (118252) Aspidagnostus lunulosus, Aspidagnostus rugosus (118255)
Dresbachian497.0 - 485.4USA (Nevada) Aspidagnostus laevis (10505) Aspidagnostus rugosus (75741)
Dresbachian497.0 - 485.4Canada (Newfoundland and Labrador) Utagnostus trispinulus (9701)
Dresbachian497.0 - 485.4Canada (Yukon) Aspidagnostus laevis (55222 55279) Aspidagnostus rugosus (55282)