| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Ptychodontidae
Taxonomy
Ptychodontidae is a family. Its type is Ptychodus.
It was assigned to Chimaeroidei by Woodward (1891); to Masticura by Hay (1902); to Masticura by Jordan (1963); to Hybodontoidei by Applegate (1970); to Heterodontoidei by Herman (1977); to Hybodontoidea by Thurmond and Jones (1981), Cahuzac et al. (2007); to Hybodontiformes by Nelson et al. (2016); to Galeomorphi by van der Laan (2019); and to Lamniformes by Amadori et al. (2025).
It was assigned to Chimaeroidei by Woodward (1891); to Masticura by Hay (1902); to Masticura by Jordan (1963); to Hybodontoidei by Applegate (1970); to Heterodontoidei by Herman (1977); to Hybodontoidea by Thurmond and Jones (1981), Cahuzac et al. (2007); to Hybodontiformes by Nelson et al. (2016); to Galeomorphi by van der Laan (2019); and to Lamniformes by Amadori et al. (2025).
Subtaxa
Hylaeobatis, Ptychodus (type genus)
Synonymy list
| Year | Name and author |
|---|---|
| 1891 | Ptychodontidae Woodward p. 37 |
| 1902 | Ptychodontidae Hay p. 317 |
| 1963 | Ptychodontidae Jordan p. 604 |
| 1970 | Ptychodontidae Applegate p. 393 |
| 1977 | Ptychodontidae Herman p. 17 |
| 1981 | Ptychodontidae Thurmond and Jones p. 41 |
| 2007 | Ptychodontidae Cahuzac et al. p. 11 |
| 2016 | Ptychodontidae Nelson et al. p. 56 |
| 2019 | Ptychodontidae van der Laan p. 40 |
| 2025 | Ptychodontidae Amadori et al. p. 7 |
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. †Ptychodontidae
show all | hide all
G. †Ptychodus Agassiz 1834
+
†Ptychodus altior Agassiz 1835
†Ptychodus anonymus Williston 1900
†Ptychodus articulatus Agassiz 1837
†Ptychodus atcoensis Hamm 2009
†Ptychodus belluccii Bonarelli 1899
†Ptychodus concentricus Agassiz 1839
†Ptychodus decurrens Agassiz 1838
+
Invalid names: Ptychodus decurrens multiplicatus Leriche 1902 [synonym], Ptychodus depressus Dixon 1850 [synonym], Ptychodus levis Woodward 1893 [synonym], Ptychodus multistriatus Woodward 1889 [synonym], Ptychodus oweni Dixon 1850 [synonym]
†Ptychodus elevatus Leriche 1929
†Ptychodus latissimus Agassiz 1835
†Ptychodus mahakalensis Chiplonkar and Ghare 1977
†Ptychodus mammillaris Agassiz 1835
+
Invalid names: Buffonites knorrii Sternberg 1829 [replaced], Buffonites undulatus Sternberg 1829 [replaced]
†Ptychodus marginalis Agassiz 1839
†Ptychodus martini Williston 1900
+
Invalid names: Ptychodus connellyi MacLeod and Slaughter 1980 [synonym]
†Ptychodus mediterraneus Canavari 1916
†Ptychodus mortoni Mantell 1836
†Ptychodus occidentalis Leidy 1868
†Ptychodus papillosus Cope 1875
†Ptychodus parvulus Whiteaves 1889
†Ptychodus paucisulcatus Dixon 1850
†Ptychodus pauli Coquand 1859
†Ptychodus polygyrus concentricus Agassiz 1839
†Ptychodus rhombodus Underwood and Cumbaa 2010
†Ptychodus rugosus Dixon 1850
†Ptychodus sulcatus Agassiz 1839
†Ptychodus whipplei Marcou 1858
Invalid names: Buffonites Sternberg 1829 [nomen oblitum], Ptychodus schlotheimii Agassiz 1834 [nomen oblitum]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|||||
|
|
||||
| Source: o = order, subp = subphylum | |||||
| References: Hendy et al. 2009, Wagner 2023, Carroll 1988 | |||||
Age range: base of the Early/Lower Aptian to the top of the Danian or 121.40000 to 61.66000 Ma
Collections (174 total)
Oldest occurrences | |||
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Jurassic - Early/Lower Cretaceous | United Kingdom (England) | Hylaeobatis problematica (241438 241466) | |
| Early/Lower Berriasian - Early/Lower Cenomanian | Algeria (Illizi) | Hylaeobatis sp. (25222) | |
| Cretaceous | India | Ptychodus mahakalensis (91555) | |
| Early/Lower Aptian | United Kingdom (England) | Hylaeobatis ornata (235313) | |
| Aptian - Turonian | Colombia | Ptychodontidae indet. (227225) | |
| Albian | Algeria | Hylaeobatis sp. (187588) | |
| Albian | USA (Texas) | Hylaeobatis ornata (27613) | |
| Albian - Cenomanian | Mexico (Hidalgo) | Ptychodus sp. (135815) | |
| Late/Upper Albian - Cenomanian | USA (Texas) | Ptychodus sp. (235811) | |
| Cenomanian | Ukraine | Ptychodus marginalis, Ptychodus anonymus (231906) Ptychodus sp., Ptychodus polygyrus, Ptychodus decurrens, Ptychodus mammillaris, Ptychodus marginalis, Ptychodus altior, Ptychodus anonymus (231904) | |
Youngest occurrences |
|||
| Time interval | Ma | Country or state | PBDB collection number |
| Campanian | Germany | Ptychodus sp. (241720) | |
| Early/Lower Campanian | USA (Texas) | Ptychodus connellyi (213544) | |
| Early/Lower Campanian | Kazakhstan | Ptychodus sp. (241395) | |
| Early/Lower Campanian | Lithuania | Ptychodus latissimus (213715) | |
| Early/Lower Campanian | USA (Alabama) | Ptychodus mortoni (171351) | |
| Late/Upper Campanian | Germany | Ptychodus sp. (64127) | |
| Late/Upper Maastrichtian | USA (Alabama) | Ptychodus mortoni (4203) | |
| Maastrichtian | France | Ptychodus sp. (195628) | |
| Maastrichtian | Jordan | Ptychodus sp. (36256) | |
| Danian | USA (Illinois) | Ptychodus sp. (70129) | |