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Ptychodus polygyrus

Chondrichthyes - Hybodontiformes - Ptychodontidae

Taxonomy
Ptychodus polygyrus was named by Agassiz (1839). Its type specimen is BMNH 4385, 4408, 4413, a set of teeth, and it is a 3D body fossil.

Synonymy list
YearName and author
1839Ptychodus polygyrus Agassiz p. 156
1889Ptychodus polygyrus Woodward p. 143
1902Ptychodus polygyrus Hay p. 318
1970Ptychodus polygyrus Applegate p. 393
1975Ptychodus polygyrus Herman p. 74
1981Ptychodus polygyrus Thurmond and Jones p. 42

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
classChondrichthyes
RankNameAuthor
subclassElasmobranchiiBonaparte 1838
infraclassEuselachii()
Hybodontida
orderHybodontiformes(Patterson 1966)
superfamilyHybodontoidea
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.

Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: marinesubp
Locomotion: actively mobilec
Life habit: nektonicc
Diet: carnivorec
Created: 2004-08-17 13:49:23
Modified: 2009-12-13 03:31:01
Source: c = class, subp = subphylum
References: Wagner 2017, Carroll 1988

Age range: base of the Turonian to the top of the Early/Lower Campanian or 93.90000 to 70.60000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Turonian93.9 - 89.8USA (New Mexico) Ptychodus polygyrus (179267)
Late/Upper Santonian - Early/Lower Campanian85.8 - 70.6USA (Alabama) Ptychodus polygyrus (81931)