Genus: Polyptychodon OWEN, 1841
Etymology: Greek, polys, “much, many”, Greek, ptykhos, “fold, wrinke, ridge” and Greek, odon, “tooth”: Many ridged tooth.
= Polytychodon FINSLEY, 1996 (sic)
= Polyptichodon SACHS, 2000 (sic)

Species: interruptus OWEN, 1841
Etymology:

Holotype:

Locality: Unknown, Sussex County?, England, Southern United Kingdom.

Horizon: Chalk Group?

Biostratigraphy:

Age: Unknown, Upper Cretaceous?

Material: Tooth.

Referred mateiral:

Number: Not given: Fragmentary skull, teeth, atlas, axis and cervical vertebrae.

 

BARDET, FISCHER, & MACHALSKI, 2015

Locality: East bank of the Wisla (Vistula) River, Annopol, easternmost part of the Holy Cross Mountians, Central Poland.

Horizon: Units 3 (late late Albian), Unit 4 (early Cenomanian), and unit 5 (middle Cenomanian).

Biostratigraphy:

Age: Late Late Albian Stage, Middle Gallic Subepoch, Uppermost Early Cretaceous Epoch,-Middle Cenomanian Stage, Middle Gallic Subepoch, Lowermost Gulf Epoch, Early Cretaceous.

Material:

MWGUW ZI/60/1, 19-27, ZPAL V.38/170, 443, 689, 893, 894, 2034: Isolated incomplete teeth.

 

BARDET & GODEFROIT, 1995/MILNER, 1987

Locality: Cambridgeshire County, England, Southern United Kingdom.

Horizon: Chalk Marl.

Biostratigraphy:

Age: Cenomanian Stage, Upper Middle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

Number: Not given: Teeth.

 

Locality: Kent County, England, Southern United Kingdom.

Horizon: Chalk Marl.

Biostratigraphy:

Age: Cenomanian Stage, Upper Middle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

Number: Not given: Teeth.

 

Locality: Cambridgeshire County, England, Southern United Kingdom.

Horizon: Lower Chalk Marl.

Biostratigraphy:

Age: Cenomanian Stage, Upper Middle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

Number: Not given: Teeth.

 

Locality: Kent County, England, Southern United Kingdom.

Horizon: Lower Chalk Marl.

Biostratigraphy:

Age: Cenomanian Stage, Upper Middle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

Number: Not given: Teeth.

 

Locality: Norfolk, England, Southern United Kingdom.

Horizon: Lower Chalk Marl.

Biostratigraphy:

Age: Cenomanian Stage, Upper Middle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

Number: Not given: Teeth.

 

Locality: Sussex County, England, Southern United Kingdom.

Horizon: Lower Chalk Marl.

Biostratigraphy:

Age: Cenomanian Stage, Upper Middle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

Number: Not given: Teeth.

 

Locality: Kent County, England, Southern United Kingdom.

Horizon:

Biostratigraphy: Plenus Marls.

Age: Cenomanian Stage, Upper Middle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

Number: Not given: Teeth.

 

Locality: Kent County, England, Southern United Kingdom.

Horizon: Middle Chalk Marl.

Biostratigraphy:

Age: Turonian Stage, Uppermost Gallic Subepoch, Lower Gulf Epoch, Middle Cretaceous.

Material:

Number: Not given: Teeth.

 

Locality: Sussex County, England, Southern United Kingdom.

Horizon: Middle Chalk Marl.

Biostratigraphy:

Age: Turonian Stage, Uppermost Gallic Subepoch, Lower Gulf Epoch, Middle Cretaceous.

Material:

Number: Not given: Teeth.

 

Locality: Kent County, England, Southern United Kingdom.

Horizon: Upper Chalk Marl.

Biostratigraphy:

Age: Turonian Stage, Uppermost Gallic Subepoch-Campanian Stage Senonian Subepoch, Gulf Epoch, Early Late Cretaceous.

Material:

Number: Not given: Teeth.

 

Locality: Sussex County, England, Southern United Kingdom.

Horizon: Upper Chalk Marl.

Biostratigraphy:

Age: Turonian Stage, Uppermost Gallic Subepoch-Campanian Stage Senonian Subepoch, Gulf Epoch, Early Late Cretaceous.

Material:

Number: Not given: Teeth.

 

BENTON & SPENCER, 1995

Locality: East Wear Bay, Folkestone, (TR 243366), Kent County, England, Southern United Kingdom.

Horizon: Lower-Upper Gault.

Biostratigraphy:

Age: Albian Stage, Middle Gallic Subepoch, Upper Early Cretaceous Epoch, Early Cretaceous.

Material:

Number: Not given: Limb bones and several teeth.

 

BENTON & SPENCER, 1995

Locality: Culand Pits, Burham, (TQ 738617), Kent County, England, Southern United Kingdom.

Horizon: Lower Chalk-Upper Chalk.

Biostratigraphy:

Age: Cenomanian-Turonian Stage, Upper Gallic Subepoch, Lower Most Gulf Epoch, Middle-Late Cretaceous.

Material:

BMNH 41641, 41644, 46959, 49007, R1217, R1938: Several teeth, vertebrae and paddle.

 

CORROY, 1922

Locality: Varennes, France.

Horizon:

Biostratigraphy:

Age:

Material:

Number: Not given: Vertebrae, tibia, teeth and fragment of sacrum.

 

KIPRIJANOFF, 1883

Locality: European Russia.

Horizon:

Biostratigraphy:

Age:

Material:

Number: Not given: Fragment of mandible.

 

MADZIA, 2016

Locality: Lewes, East Sussex County, England, Southern United Kingdom.

Horizon: Glauconitic Marl Member, West Melbury Marly Chalk Formation (old Lower Chalk).

Biostratigraphy:

Age: Cenomanian Stage, Upper Middle Gallic Subepoch, Lower Gulf Epoch, Middle Cretaceous.

Material:

Number: Not given: Eight teeth.

 

Locality: Unknown locality, Kent County? England, Southern United Kingdom.

Horizon: West Melbury Marly chalk or the Zig Zag Chalk Formation? (old Lower Chalk).

Biostratigraphy:

Age: Cenomanian Stage, Upper Middle Gallic Subepoch, Lower Gulf Epoch, Middle Cretaceous.

Material:

Number: Not given: Fragmentary lower jaw.

 

Locality: Flokestone, Kent County, England, Southern United Kingdom.

Horizon: Gault Formation.

Biostratigraphy:

Age: Middle to Upper Albian Stage, Middle Malm Epoch, Upper Lower Cretaceous Epoch, Early Cretaceous

Material:

CAMSM TN 3770.1.1, TN 3770.2.1: 2 partial tooth crowns.

 

Locality: Hauxton, Cambridgeshire County, England, Southern United Kingdom.

Horizon: West Melbury Marly Chalk Formation and basal Zig Zag Chalk Formation.

Biostratigraphy:

Age: Lower to Middle Cenomanian Stage, Upper Middle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

CAMSM B 74968, B 74969: 2 almost complete tooth crowns.

 

Locality: Haslingfield, Cambridgeshire County, England, Southern United Kingdom.

Horizon: West Melbury Marly Chalk Formation ro the Zig Zag Chalk Formation.

Biostratigraphy:

Age: Cenomanian Stage, Upper Middle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

CAMSM B 75753, B 75474, B 75755: 1 tooth crown and 2 roots.

 

Locality: Gravesend, Kent County, England, Southern United Kingdom.

Horizon: Seaford Chalk Formation.

Biostratigraphy:

Age: Lower Coniacian to Middle Santonian Stage, Lower Gulf Epoch, Early Late Cretaceous.

Material:

CAMSM B 75741: Tooth crown.

 

SEELEY, 1869

Locality: Halling, Kent County? England, Southern United Kingdom.

Horizon: Plenus Marls Member, Holywell Nodular  Chalk Formation? (old Chalk).

Biostratigraphy:

Age: Upper Cenomanian Stage, Upper Middle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

CAMSM B 20619, B 20620, B 20621: 3 teeth.

 

SEELEY, 1869

Locality: Offham, Kent County? England, Southern United Kingdom.

Horizon: Chalk Group.

Biostratigraphy:

Age: ?Upper Cretaceous.

Material:

CAMSM B 20622, 20623: 2 teeth.

 

SEELEY, 1869

Locality: Cherry Hinton, Cambridgeshire County? England, Southern United Kingdom.

Horizon: West Melbury Marly Chalk Formation or the Zig Zag Chalk Formation.

Biostratigraphy:

Age: Cenomanian Stage, Upper Middle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

CAMSM B 20624, B 20625, B 20626: 3 teeth.

 

 

Locality: Huntingdon Road, Cambridgeshire County? England, Southern United Kingdom.

Horizon: Cambridge Greensand Member, West Melbury Chalk Formation (old Upper Greensand).

Biostratigraphy:

Age: Cenomanian Stage, Upper Middle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

Number: Not given: 15 cervical and dorsal vertebrae.

 

 

MARCINOWSKI & RADWANSKI, 1983

Locality: Annopol-on-Vistula, Holy Cross Mountains, Poland.

Horizon: Middle/Upper Albian Phosphorites.

Biostratigraphy:

Age: Albian Stage, Middle Malm Epoch, Upper Lower Cretaceous Epoch, Early Cretaceous

Material:

Number: Not given: Teeth.

 

OBATA, HASEGAWA &OTSUKA, 1972

Locality: Hokkaido Island, Japan.

Horizon:

Biostratigraphy:

Age: Upper Cenomanian Stage, Upper Middle Gallic Subepoch, Lower Gulf Epoch, Middle Cretaceous.

Material:

NSM-PV15006: Tooth.

 

OWEN, 1850

Locality: Near Hythe, Kent County, England, Southern United Kingdom.

Horizon: Chalk.

Biostratigraphy:

Age: Late Cretaceous.

Material:

Number: Not given: Teeth.

 

Locality: Kent County, England, Southern United Kingdom.

Horizon: Chalk.

Biostratigraphy:

Age: Late Cretaceous.

Material:

Number: Not given: Jaw fragment with one tooth.

 

OWEN, 1851

Locality: Cambridge, Cambridgeshire County, England, Southern United Kingdom.

Horizon: Cambridge Greensand Member, West Melbury Chalk Formation (old Upper Greensand).

Biostratigraphy:

Age: Cenomanian Stage, Upper Middle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

CAMSM B 57282-382, B 57384, B 57400, B 57407-412, B 67852, TN 1716.1-9: 119 teeth.

Number: Not given: Portion of lower jaw with a tooth, and a tooth.

Number: Not given: Dorsal vertebra.

Number: Not given: Fragmentry ribs.

SEELEY, 1869

Number: Not given: 103 teeth.

 

Locality: Near Valmer in cutting in Lewes Railway, Sussex County, England, Southern United Kingdom.

Horizon: Newhaven Chalk Formation (old Lower Chalk).

Biostratigraphy:

Age: Santonian-Lower Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

Number: Not given: Teeth.

 

 

Locality: Sussex County, England, Southern United Kingdom.

Horizon: Chalk.

Biostratigraphy:

Age: Late Cretaceous.

Material:

Number: Not given: Tooth.

 

OWEN, 1854

Locality: Near Barnwell, Cambridgeshire County, England, Southern United Kingdom.

Horizon: Cambridge Greensand Member, West Melbury Marly Chalk Formation? (old Middle and lwoer Chalk or Chalkmarl).

Biostratigraphy:

Age: Cenomanian Stage, Upper Middle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

Unknown number of teeth.

ROYAL COLLEGE OF SURGEONS 65: A fragment of a base of a tooth.

 

Locality: Near Hythe, Kent County, England, Southern United Kingdom.

Horizon: Upper Greensand.

Biostratigraphy:

Age: Cenomanian Stage, Upper Middle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

ROYAL COLLEGE OF SURGEONS 66: A transverse section of the middle shaft of a femur.

 

OWEN, 1859

Locality: Dorking, Surry County, England, Southern United Kingdom.

Horizon: WEst Melbury Marly Chalk, Zig Zag Chalk, Holywell Nodular chalk or the New Pit Chalk Formation (old Lower Chalk).

Biostratigraphy:

Age: Cenomanian Stage, Upper Middle Gallic Subepoch-Turonian Stage, Uppermost Gallic Subepoch, Lower Gulf Epoch, Late Cretaceous.

Material:

Number: Not given: Fragmentary skull and fragmentary; lower jaws.

 

PAPAZZONI, 2003

IPUM 30142

Locality: In the vicinity of Castelvecchio di Prignano, Modena Province, Italy.

Horizon: Argille Varicolori Formation.

Biostratigraphy:

Age: Cenomanian Stage, Upper Middle Gallic Subepoch, Lowermost Early Cretaceous Epoch, Middle Cretaceous- Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material: Tooth.
Note: Orginally thought to belong to an Ichthyosaur (ROMPIANESI & SIROTTI, 1995)

 

 

PATON, 1975

Locality: Potton, Bedfordshire County, England, Southern United Kingdom.

Horizon: Phosphate Beds.

Biostratigraphy:

Age: Valanginian-Hauterivian Stage, Neocomian Subepoch, Lower Cretaceous Epoch, Early Cretaceous.

Material:

RSM: 4 teeth.

 

PERSSON

Locality: Bile Hory, near Prague, Bohemia, Czech Republic.

Horizon:

Biostratigraphy:

Age: Turonian Stage, Uppermost Gallic Subepoch, Lower Gulf Epoch, Late Cretaceous.

Material:

Number: Not given: Mandible and teeth.

 

Locality: Langelsheim, Lower Saschen (Saxony) State, North Central Germany.

Horizon:

Biostratigraphy:

Age: Neocomian Subepoch, Lower Early Cretaceous Epoch, Early Cretaceous.

Material:

Number: Not given: Teeth.

 

Locality: Zamost, Bohemia, Czech Republic.

Horizon:

Biostratigraphy:

Age: Turonian Stage, Uppermost Gallic Subepoch, Lower Gulf Epoch, Late Cretaceous.

Material:

Number: Not given: Skull.

 

Locality: The oblast of Kursak, Kursk region, European Russia.

Horizon:

Biostratigraphy:

Age: Cenomanian Stage, Upper Middle Gallic Epoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

Number: Not given: Teeth.

 

SAUVAGE, 1882

Locality: Grandpre, Ardennes Department, France.

Horizon:

Biostratigraphy: Ammonites milletianus zone.

Age: Early Cretaceous.

Material:

Number: Not given: Teeth.

 

VONLOH & BELL, 1998

Locality: Belle Fourche Reservoir, Butte County, South Dakota.

Horizon: Basal calcarenites, Orman Lake Member, Greenhorn Formation.

Biostratigraphy: Dunveganoceras pondi zone.

Age: Early Upper Cenomanian Stage, Upper Middle Gallic Subepoch, Lowermost Early Cretaceous Epoch, Middle Cretaceous.

Material:

SDSM 35005: Tooth fragment.

 

Locality: Angustora Reservoir, Fall River County, South Dakota.

Horizon: 80 cm below fourth bentonite seam from the base of unit, Orman Lake Member, Greenhorn Formation.

Biostratigraphy: Dunveganoceras pondi zone.

Age: Lower Upper Cenomanian Stage, Upper Middle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

SDSM 34991: Nearly complete mandible with posterior half of skull.

 

Locality: Edgmont, Fall River County, South Dakota.

Horizon: Basal calcareinte bed near the middle of the third member, Greenhorn Formation.

Biostratigraphy: Sciponoceras gracile zone.

Age: Upper Cenomanian Stage, Upper Middle Gallic Epoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

SDSM 35004: Tooth ¾ of the crown preserved.

 

Locality: Fairburn, Custer County, South Dakota.

Horizon: Basal Orman Lake Member, Greenhorn Formation.

Biostratigraphy: Dunveganoceras pondi zone.

Age: Lower Upper Cenomanian Stage, Upper Middle Gallic Epoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

SDSM 35006: Fragment of a mandible questionably assigned to P. interruptus.

 

= Aptychodon cretaceius REUSS, 1855
Etymology:

Holotype:

Locality: Planer of White Mountain, near Prague, Poland.

Horizon:

Biostratigraphy:

Age: Turonian Stage, Uppermost Gallic Subepoch, Lower Gulf Epoch, Late Cretaceous.

Material: Teeth.

_____________________________________________________________________________________

Species: hudsoni WELLES & SLAUGHTER, 1963
Etymology:

Holotype: Southern Methodist University, Museum of Paleontology, No. 60313

Locality: 100 yards west of Chalk Hill Road and 300 yards north of West Commerce, Dallas, Texas.

Horizon: Arcadia Park Member of the Eagle Ford Shale, Eagle Ford Group.

Biostratigraphy:

Age: Turonian Stage, Uppermost Gallic Subepoch, Lower Gulf Epoch, Late Cretaceous.

Material: Fragmentary skull, fragmentary mandibular symphysis, anterior caudal centrum, and teeth.