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

Ptychodus polygyrus

Chondrichthyes - Lamniformes - Ptychodontidae

Taxonomy
Ptychodus polygyrus was named by Agassiz (1835). Its type specimen is BMNH 4385, 4408, 4413, a set of teeth, and it is a 3D body fossil.

Subspecies
P. concentricus, P. marginalis
Sister species lacking formal opinion data
P. janewayii, P. mammilaris

Synonymy list
YearName and author
1835Ptychodus polygyrus Agassiz p. 54
1838Ptychodus polygyrus Agassiz figs. Pl 25b, figs 21-23
1839Ptychodus polygyrus Agassiz p. 156 figs. Pl 25, figs 4-11
1874Ptychodus polygurus Barrois p. 109
1889Ptychodus polygyrus Woodward p. 143
1902Ptychodus polygyrus Hay p. 318
1970Ptychodus polygyrus Applegate p. 393
1977Ptychodus polygyrus Herman p. 74 figs. Pl 2, fig 12
1981Ptychodus polygyrus Thurmond and Jones p. 42
2004Ptychodus polygyrus Cicimurri p. 7 figs. 4G-H
2020Ptychodus polygyrus Amadori et al. p. 7 fig. 4
2023Ptychodus polygyrus Amadori et al. p. 4 fig. 2E,H
2023Ptychodus polygyrus Amadori et al. p. 15 fig. 10

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classChondrichthyes
RankNameAuthor
infraclassElasmobranchii(Bonaparte 1838)
—Euselachii()
—NeoselachiiCompagno 1977
superorderGaleomorphiiCompagno 1973
orderLamniformesBerg 1958
familyPtychodontidae
genusPtychodus
speciespolygyrus

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.

†Ptychodus polygyrus Agassiz 1835
show all | hide all
show all | hide all
Diagnosis
No diagnoses are available