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Diplagnostidae
Taxonomy
Diplagnostidae was named by Whitehouse (1936).
It was assigned to Agnostida by Whittington et al. (1997) and Bao and Jago (2000); to Agnostoidea by Bruton and Harper (2000); and to Condylopygoidea by Naimark and Pegel (2017).
It was assigned to Agnostida by Whittington et al. (1997) and Bao and Jago (2000); to Agnostoidea by Bruton and Harper (2000); and to Condylopygoidea by Naimark and Pegel (2017).
Subtaxa
Acadagnostus, Agnostotes, Baltagnostus, Denagnostus, Diplagnostinae, Diplagnostus (syn. Tasagnostus), Dolichagnostus, Iniospheniscus, Linguagnostus (syn. Cristagnostus), Machairagnostus (syn. Tarayagnostus), Nahannagnostus, Oedorhachis, Oidalagnostinae, Pseudagnostus (syn. Litagnostus, Sulcatagnostus, Pseudagnostina, Rhaptagnostus), Xestagnostus
Synonymy list
| Year | Name and author |
|---|---|
| 1936 | Diplagnostidae Whitehouse |
| 1997 | Diplagnostidae Whittington et al. p. 362 |
| 2000 | Diplagnostidae Bao and Jago pp. 887, 892 |
| 2000 | Diplagnostidae Bruton and Harper |
| 2017 | Diplagnostidae Naimark and Pegel p. 1196 |
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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. †Diplagnostidae Whitehouse 1936
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G. †Acadagnostus Kobayashi 1939
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†Acadagnostus acadica Hartt 1868
†Acadagnostus argentinus Harrington and Leanza 1957
†Acadagnostus syrma Opik 1979
G. †Agnostotes Opik 1963
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Subg. †Agnostotes (Pseudoglyptagnostus) Lu 1964
†Agnostotes clavata Lu 1964
†Agnostotes latilimbatus Peng 1992
†Agnostotes orientalis Kobayashi 1935
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Invalid names: Pseudoglyptagnostus clavatus Lu 1964 [synonym]
G. †Baltagnostus Lochmann 1944
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†Baltagnostus ambonus Peng and Robison 2000
†Baltagnostus magnificus Ergaliev and Ergaliev 2008
†Baltagnostus rakuroensis Kobayashi 1935
G. †Denagnostus Jago 1987
G. †Diplagnostus Jaeckel 1909
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†Diplagnostus floralis Opik 1979
†Diplagnostus planicauda Angelin 1851
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Invalid names: Diplagnostus qinlingensis Yang et al. 1993 [synonym], Diplagnostus zhexiensis Lu and Lin 1989 [synonym]
†Diplagnostus pseudofloralis Ergaliev and Ergaliev 2008
†Diplagnostus pyriformis Ergaliev and Ergaliev 2008
Invalid names: Tasagnostus Jago 1976 [synonym]
G. †Dolichagnostus Pokrovskaya 1958
G. †Linguagnostus Kobayashi 1939
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†Linguagnostus paibiensis Dong 1991
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Invalid names: Linguagnostus transversus Yang et al. 1993 [synonym]
†Linguagnostus reconditus Poletaeva and Romanenko 1970
†Linguagnostus stenus Peng and Robison 2000
†Linguagnostus wanyuanensis Yang et al. 1993
Invalid names: Cristagnostus Rushton 1978 [synonym]
G. †Machairagnostus Harrington and Leanza 1957
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†Machairagnostus corrugatus Suarez Soruco 1976
†Machairagnostus tmetus Harrington and Leanza 1957
Invalid names: Tarayagnostus Suarez Soruco 1975 [synonym]
G. †Nahannagnostus Pratt 1992
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†Nahannagnostus logani Pratt 1992
†Nahannagnostus nganasanicus Rozova 1964
†Nahannagnostus pratti Choi et al. 2004
G. †Oedorhachis Resser 1938
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†Oedorhachis globulosus Ergaliev 2001
†Oedorhachis taitzehoensis Chu 1959
Subfm. †Oidalagnostinae Opik 1967
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G. †Oidalagnostus Westergard 1946
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†Oidalagnostus trispinifer Westergard 1946
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Invalid names: Oidalagnostus tienshanicus Lu 1974 [synonym]
Invalid names: Ovalagnostus Lu 1974 [synonym]
G. †Pseudagnostus Jaekel 1909
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Subg. †Pseudagnostus (Pseudagnostus) Jaekel 1909
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†Pseudagnostus (Pseudagnostus) aulax Shergold 1980
†Pseudagnostus (Pseudagnostus) mortensis Shergold 1980
†Pseudagnostus (Pseudagnostus) parvus Shergold 1980
†Pseudagnostus (Pseudagnostus) tricanthus Shergold 1980
†Pseudagnostus ampullatus Opik 1967
†Pseudagnostus anhuiensis Qian 1985
†Pseudagnostus benxiensis Qian 1982
†Pseudagnostus bulgosus Opik 1967
†Pseudagnostus chinensis Dames 1883
†Pseudagnostus communis Hall and Whitfield 1877
†Pseudagnostus cyclopyge Tullberg 1880
†Pseudagnostus dividuus Choi et al. 2004
†Pseudagnostus gyps Clark 1923
†Pseudagnostus idalis Opik 1967
†Pseudagnostus karatauensis Ergaliev 1980
†Pseudagnostus koerferi Monke 1903
†Pseudagnostus leptoplastorum Westergard 1944
†Pseudagnostus marginisulcatus Kobayashi 1962
†Pseudagnostus medius Choi et al. 2004
†Pseudagnostus mestus Opik 1967
†Pseudagnostus obsurdus Ergaliev and Ergaliev 2008
†Pseudagnostus papilio Shergold 1971
†Pseudagnostus planulatus Raymond 1924
†Pseudagnostus praecurrens Ergaliev 1980
†Pseudagnostus primus Kobayashi 1935
†Pseudagnostus prolongus Hall and Whitfield 1877
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Invalid names: Pseudagnostina vicaria Oepik 1967 [synonym]
†Pseudagnostus pseudangustilobus Ergaliev 1980
†Pseudagnostus pseudocyclopyge Ivshin 1956
†Pseudagnostus punctatus Ergaliev and Ergaliev 2008
†Pseudagnostus rajovopsis Pratt 1992
†Pseudagnostus securiger Lake 1906
†Pseudagnostus sericatus Opik 1967
†Pseudagnostus subquadratus Lu and Zhu 1980
†Pseudagnostus vastulus Whitehouse 1936
Invalid names: Litagnostus Rasetti 1944 [synonym], Pseudagnostina Palmer 1962 [synonym], Rhaptagnostus Whitehouse 1936 [synonym], Sulcatagnostus Kobayashi 1937 [synonym]
G. †Xestagnostus Opik 1967
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†Xestagnostus legirupa Opik 1967
†Xestagnostus transversus Lu and Lin 1989
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, o = order | |||||
| References: Kiessling 2004, Hendy 2009 | |||||
Age range: base of the Taijangian to the top of the Tremadocian or 509.00000 to 477.70000 Ma
Collections (759 total)
Oldest occurrences | |||
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Cambrian | USA (Alaska) | Pseudagnostus sp. (114982) | |
| Cambrian | USA (Wisconsin) | Litagnostus sp., Pseudagnostus sp. (250) | |
| Cambrian | USA (South Dakota) | Pseudagnostus sp. (231) | |
| Cambrian | USA (Montana) | Pseudagnostus sp. (258) | |
| Delamaran | USA (Utah) | Peronopsis acadica (10566) | |
| Amgan | Kazakhstan | Baltagnostus rakuroensis, Baltagnostus magnificus (9976 9977) Baltagnostus rakuroensis, Diplagnostus pseudofloralis, Baltagnostus magnificus (9973) | |
| Amgan | Czech Republic (Bohemia) | Acadagnostus fallax (67708 67738) | |
| Solvan | Spain (Zaragoza) | Peronopsis acadica (203131) | |
| Taijangian | China (Shandong) | Pseudoperonopsis rakuroensis (126904) | |
| Taijangian | China (Hunan) | Diplagnostus planicauda (49155 49156 49158) Diplagnostus planicauda, Baltagnostus ambonus (49159) | |
Youngest occurrences |
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| Time interval | Ma | Country or state | PBDB collection number |
| Tremadoc | Bolivia | Machairagnostus tmetus, Tarayagnostus corrugatus (8802) | |
| Tremadoc | Argentina | Machairagnostus sp. (8866 9021) | |
| Tremadoc | Argentina (Jujuy) | Machairagnostus tmetus (115690) | |
| Tremadoc | Mexico (Oaxaca) | Pseudagnostus indet. (9853) Pseudagnostus sp. (9843) | |
| Tremadoc | USA (Vermont) | Litagnostus sp., Pseudagnostus sp. (277) | |
| Tremadoc | Canada (Newfoundland and Labrador) | Pseudagnostus sp. (78091) | |
| Migneintian | United Kingdom (Shropshire) | Litagnostus meniscus (75116) | |
| Gasconadian | USA (Texas) | Pseudagnostus sp. (282) | |
| Tremadocian | Canada (Newfoundland and Labrador) | Pseudagnostus sp. (105854) | |
| Arenigian | China (Hunan) | Diplagnostidae indet. (116212) | |