Ptychodus
ver. 1.1
Back & Forth
Order Hybodontiformes ZANGERL, 1981 |
Family Ptychodontidae JAEKEL, 1898 |
Genus Ptychodus AGASSIZ, 1838 |
Ptychodus anonymus WILLISTON, 1900 : Turonian, Kamp Ranch Formation Dallas County |
13 mm W |
Ptychodus decurrens (AGASSIZ, 1848): Del Rio Formation (Blue Cut), McLennan County |
7.8 mm W |
Ptychodus elevatus: Lower Santonian, Chilisay, Aktyubinsk Region, W. Kazakhstan |
Ptychodus latissimus (AGASSIZ, 1835): Upper Cretaceous, Arcadia Park Fm., Kamp Ranch Mbr, 544 Josey Ln./Fyke Rd. (cooks Creek) Dallas County |
25 mm W |
Ptychodus mammillaris (AGASSIZ, 1835): Upper Cretaceous, Arcadia Park Fm., Kamp Ranch Mbr, 544 Josey Ln./Fyke Rd. (cooks Creek) Dallas County |
24 mm W |
Ptychodus mortoni AGASSIZ, 1839: Upper Cretaceous, Niobrara Chalk Formation, Gove County, Kansas |
38 mm W |
Ptychodus multistriatus: Turonian, Ulanak, Mangyshlak |
28 mm W |
Ptychodus occidentalis (LEIDY, 1868): Blue Hill Shale Mbr., Fort Hayes Ls. Hatchett Ranch, Pueblo County, Colorado |
7.5 mm W |
Ptychodus paucisulcatus (pictured Ekaterinburg 1999, Vol. 2, page 238): Lower Santonian, Chilisay, Aktyubinsk Region, W. Kazakhstan |
18 mm W |
Ptychodus polygyrus (AGASSIZ, 1835): Upper Cretaceous, Arcadia Park Fm., Kamp Ranch Mbr, 544 Josey Ln./Fyke Rd. (cooks Creek) Dallas County |
26 mm W |
Ptychodus whipplei (MARCOU, 1858): a; Juana Lopez Mbr., Carlisle Shale, Hatchett Ranch, Pueblo County, Colorado, b; Eagleford Group Kamp Ranch Formation Dallas County |
20120302 |
Ptychodus mortoni AGASSIZ, 1839: Upper Cretaceous, Niobrara Chalk Formation, Gove County, Kansas |
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