| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Ptychagnostidae
Taxonomy
Ptychagnostidae was named by Kobayashi (1939).
It was assigned to Agnostoidea by Westrop et al. (1996); to Agnostida by Whittington et al. (1997), Hong et al. (2003); and to Condylopygoidea by Naimark and Pegel (2017).
It was assigned to Agnostoidea by Westrop et al. (1996); to Agnostida by Whittington et al. (1997), Hong et al. (2003); and to Condylopygoidea by Naimark and Pegel (2017).
Synonymy list
| Year | Name and author |
|---|---|
| 1939 | Ptychagnostidae Kobayashi |
| 1996 | Ptychagnostidae Westrop et al. pp. 812, 816 |
| 1997 | Ptychagnostidae Whittington et al. p. 350 |
| 2003 | Ptychagnostidae Hong et al. |
| 2017 | Ptychagnostidae Naimark and Pegel p. 1177 |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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. †Ptychagnostidae Kobayashi 1939
show all | hide all
G. †Acidusus Opik 1979
+
†Acidusus acidusus Öpik 1979
†Acidusus aculeatus Angelin 1851
†Acidusus cassis Öpik 1961
†Acidusus occultatus Öpik 1979
G. †Allobodochus Opik 1979
G. †Aotagnostus Opik 1979
+
†Aotagnostus aotus Öpik 1979
†Aotagnostus lundgreni Tullberg 1880
+
Invalid names: Triplagnostus longitriangularis Lin 1991 [synonym]
†Aotagnostus magniceps Öpik 1979
†Aotagnostus minutus Lu and Lin 1989
G. †Goniagnostus Howell 1935
+
†Goniagnostus nathorsti Brogger 1878
†Goniagnostus scarabaeus Whitehouse 1939
†Goniagnostus spiniger Westergard 1931
†Goniagnostus venustus Zhou and Yang 1977
G. †Lejopyge Hawle and Corda 1847
+
†Lejopyge acantha Robison 1984
†Lejopyge armata Linnarsson 1869
†Lejopyge barrandei Hicks 1872
†Lejopyge cos Opik 1967
†Lejopyge elegans Tullberg 1880
†Lejopyge multifora Opik 1979
†Lejopyge rigbyi Robison 1984
†Lejopyge sinensis Lu and Lin 1987
Invalid names: Miagnostus Jaekel 1909 [objective synonym]
G. †Myrmecomimus Öpik 1979
+
†Myrmecomimus saltus Öpik 1979
†Myrmecomimus solitarius Ergaliev and Ergaliev 2008
†Myrmecomimus tribulis Öpik 1979
G. †Onymagnostus Opik 1979
+
†Onymagnostus convexus Ergaliev and Ergaliev 2008
†Onymagnostus cuneiformis Ergaliev and Ergaliev 2008
†Onymagnostus hybridus Broegger 1878
†Onymagnostus mundus Öpik 1979
†Onymagnostus ovaliformis Ergaliev and Ergaliev 2008
†Onymagnostus rotundatus Ergaliev 1980
†Onymagnostus semiermis Öpik 1979
†Onymagnostus stenorrhachis Grönwall 1902
Invalid names: Agnostonymus Öpik 1979 [synonym]
G. †Pseudophalacroma Pokrovskaya 1958
+
†Pseudophalacroma dubium Whitehouse 1936
+
Invalid names: Pseudophalacroma crebra Pokrovskaya 1958 [synonym]
†Pseudophalacroma scanense Westergard 1946
G. †Ptychagnostus Jaekel 1909
+
Subg. †Ptychagnostus (Ptychagnostus) Jaekel 1909
†Ptychagnostus acidusus Opik 1979
†Ptychagnostus affinis Brøgger 1878
†Ptychagnostus akanthodes Robison 1964
†Ptychagnostus aksayensis Ergaliev and Ergaliev 2008
†Ptychagnostus atavus Tullberg 1880
†Ptychagnostus convexus Westergard 1946
†Ptychagnostus cuyanus Rusconi 1948
†Ptychagnostus intermedius Tullberg 1880
†Ptychagnostus karatauensis Ergaliev 1980
†Ptychagnostus punctuosus Angelin 1851
†Ptychagnostus richmondensis Walcott 1884
†Ptychagnostus seminula Whitehouse 1939
†Ptychagnostus sinicus Lu 1957
†Ptychagnostus spinosus Ergaliev 1980
Invalid names: Aristarius Öpik 1979 [synonym], Canotagnostus Rusconi 1951 [synonym], Zeteagnostus Opik 1979 [synonym]
G. †Tomagnostus Howell 1935
+
†Tomagnostus bothrus Robison 1994
†Tomagnostus fissus Lundgren 1879
†Tomagnostus sibiricus Pokrovskaya and Jegorova 1972
G. †Triplagnostus Howell 1935
+
†Triplagnostus gibbus Linnarsson 1869
†Triplagnostus scopus Öpik 1979
†Triplagnostus ultimus Öpik 1979
G. †Yakutiana Özdikmen 2009
Diagnosis
No diagnoses are available