Genus: Ptyctodus PANDER, 1858
Etymology:
= Aulacosteus EICHWALD, 1846 (nomen dubium)
Etymology:
= Ptycotdus HUSSAKOF & BYRANT, 1918 (sic)
= Rinodus NEWBERRY & WORTHEN, 1866
Etymology:

Species: menzeli
Etymology:

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age:

Materail:
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Species: obliquus PANDER, 1858
Etymology:

Holotype:

Locality: Main Devonian Field, Russia.

Horizon:

Biostratigraphy:

Age: Frasnian Stage, Lower Late Devonian Epoch, Late Devonian.

Material:

Referred material:

DENISON, 1978

Locality: Holy Cross Mountain, Poland.

Horizon: Calcaire a Hypothyridina cornula.

Biostratigraphy:

Age: Frasnian Stage, Lower Late Devonian Epoch, Late Devonian.

Material:

Number: Not given:


Locality: Boulonnais, Pas-De-Calais Department, France.

Horizon:

Biostratigraphy:

Age: Late Devonian.

Material:

Number: Not given:
:


= Ptyctodus ancinnnatus PANDER, 1858
Etymology:

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age:

Material:


= Aulacosteus cochleaniformes EICHWALD, 1860
Etymology:

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age:

Material:


= Aulacosteus oviformes EICHWALD, 1860
Etymology:

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

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Species: calceolus (NEWBERRY & WORTHEN, 1866)
Etymology:
= Rinodus coalceolus NEWBERRY & WORTHEN, 1866

Holotype:

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

Note: According to DENISON, 1978…”Common in the upper Mississippi River Valley (Missouri, Illinois, Iowa, Kentucky, Wisconsin) east to New York and Ontarior and north to Manitoba in Middle Devonian (Givetian) and Upper Devonian, (Frasnian) formatiions. Also reported at the top fo the Devonian or base of the Mississppian (Framennian or Tournasian), Louisiana formation and Bushberg sandstone, Missouri, through these may be reworded from earlier formations.
Biostratigraphy:

Age: Frasnian Stage, Lower Late Devonian Epoch, Late Devonian.

Also

EASTMAN, 1907

Localities and horizons: Middle devonic of Iowa, Illinois, Missouri, Wisconsin and Manitoba, Upper Devonic of Iowa and Elmhurst, Ill. Genesee shales fo Eighteetn Mile Crek, and Portage of Naples, New York.

Referred material:

HUSSAKOF & BYRANT, 1918

Locality: Milwaukee, Milwaukee County, Wisconsin.

Horizon: Hamilton Limestone.

Biostratigraphy:

Age: Givetian Stage, Upper Mid Devonian Epoch, Middle Devonian.

Material:

Museum of the Buffalo Society of Natural Science, E. 1884: Right lower dental plate.

E. 1885: An isolated tritor.

E. 1886: An isolated tritor.

E. 1887: An isolated tritor.

E. 1888: Left upper dental plate.

E. 1889: Imperfect right lower dental plate.


Locality: Eighteen Mile Creek, near North Evans, Erie County, New York.

Horizon: Conodont bed, Lower Genesee.

Biostratigraphy:

Age: Frasnian Stage, Lower Late Devonian Epoch, Late Devonian.

Material:

E. 1913: 3 small upper dental plates.

E. 2409: 2 imperfect tritors of dnetla plates.

E. 2431: A left upper dental plate.


STAINBROOK, 1935

Number:

Locality: Alamo Creek, Sacramento Mountains, Near Alamogordo, Otero County, New Mexico.

Horizon:

Biostratigraphy:

Age: Devonian.

Material:


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Species: major ROHON, 1895
Etymology:

Holotype:

Locality: Central Devonian fields, Russia.

Horizon:

Biostratigraphy:

Age: Late Devonian.

Material: Dental plate.
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Species: compressus EASTMAN, 1898
Etymology:

Holotype:

Locality: North Liberty, Johnson County, Iowa and New York.

Horizon:

Biostratigraphy:

Age: Givetian Stage, Late Mid Devonian, Late Middle Devonian-Frasnian Stage, Lower Late Devonian Epoch, Late Devonian.

Material:

Referred material:

 

HUSSAKOF & BYRANT, 1918

Locality: Eighteen Mile Creek, near North Evans, Erie County, New York.

Horizon: Conodont bed.

Biostratigraphy:

Age: Frasnian Stage, Lower Late Devonian Epoch, Late Devonian.

Material:

Museum of the Buffalo Society of Natural Science, E. 1911: A rather large, perfect right lower dental plate.

E. 1912: A large, much worn left lower dental plate.

E. 1914: 5 right l ower dental plates.

E. 1914-A: 2 left lower dental plates.

E. 1916: 2 rather small right upper dental plates.

E. 1917: 3 left upper dental ples. One of htem in matrix.

E. 1921: A very small lower dental plate.

E. 1922-3: (1) A right lower dental plate, lacking only the tip of the beak; (2) the front half of a left dental plate.

E. 1924: Imperfect left lower dental plate.

E. 1925: Minute right lower dental plate.

E. 1931: Imperfect lower dental plate, in limestone.

E. 2404: A right lower dental plate showing well-preserved oral margin.

E. 2406: 2 rahter small upper dental plates.

E. 2407: A rather large, worn lower dnetal plate.

E. 2408: 2 left lower dental plates.

E. 2410: Right lower dental plate.

E. 2411: 8 small dental plates, 3 of them among the smallest ever collected.

E. 2432: 4 right lower dental plates.

E. 2433: A large left lower dental plate.

 

Locality: Cazenovia Creek, Springbrook, Erie County, New York.

Horizon: Pyrite layer of the Tully Horizon.

Biostratigraphy:

Age: Late Devonian.

Material:

E. 2402: Upper dental plate.


Locality: Milwaukee, Milwaukee Conunty, Wisconsin.

Horizon: Hamilton limestone.

Biostratigraphy:

Age: Givetian Stage, Upper Mid Devonian Epoch, Middle Devonian.

Materil:

E. 1892: An imperfect dental plate.

E. 1893: An imperfect dental plate.


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Species: ferox EASTMAN, 1898
Etymology:

Holotype:

Locality: Wisconsin.

Horizon: Milwaukee Formation.

Biostratigraphy:

Age: Givetian Stage, Late Mid Devonian, Late Middle Devonian.

Material:

Referred material:

Localities and Horizons: Hamilton Limestone, Erian, Milwaukee, Wisconsin, Cedar Valley Limestone, Mesodevonic, of Iowa and Illinois, State Quarry beds, Neodevonic, Johnon County, Iowa.

Material:

Referred material:

HUSSAKOF & BYRANT, 1918

Museum of the Buffalo Society of Natural Science, E. 1890: Complete lower dental plate, somewhat crushed.

E. 2442: Cast of a complete left lower dental plate.

E. 2443: Cast of a complete left uper dental plate.


DENISON, 1978…”Cedar Valley limestone, Iowa and Illinois; and Craghead Creek shales, Missouri; Upper Devonian (Frasnian), State Quarry beds, Iowa and Snyder Creek shales, Missouri, U.S.A…”


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Species: molaris EASTMAN, 1898
Etymology:

Holotype:

Locality: Eifle, Rhieland-Pfalz State, Germany.

Horizon:

Biostratigraphy:

Age: Presumably Middle Devonian.

Material: Dental plate.
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Species: panderi EASTMAN, 1898
Etymology:

Holotype:

Locality: Eifle, Rhieland-Pfalz State, Germany.

Horizon:

Biostratigraphy:

Age: Presumably Middle Devonian.

Material: Dental plates.
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Species: eastmanni WELLER, 1906
Etymology:

Holotype: FMNH UC 11361

Locality: Glen Park, Jefferson County, Missouri.

Horizon: Glen Park Limestone, Kinderhook.

Biostratigraphy:

Age: Early Mississippian, Early Carboniferous.

Material: Tooth.
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Species: punctatus EASTMAN, 1907
Etymology:

Holotype: MCZ

Locality: Leroy, Genesee County, New York.

Horizon: Onondaga limestone.

Biostratigraphy:

Age: Eifelian Stage, Lower Mid Devonian, Middle Devonian.

Material: Fragmentary jaw?

Referred material:

Locality: Ohio.

Horizon:

Biostratigraphty:

Age: Late Devonian.

Material:

AMNH:

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Species: sibericus TOLMACHOFF, 1915
Etymology:

Holotype:

Locality: Kuznetsk Basin, Siberia, Asian Russia.

Horizon:

Biostratigraphy:

Age: Frasnian Stage, Lower Late Devonian Epoch, Late Devonian.

Material:
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Species: howlandi HUSSAKOF & BRYANT, 1918
Etymology:

Holotype: Museum of the Buffelo Society of Natural Science, E. 1919

Locality: Eighteen Mile Creek, near North Evans, Erie County, New York.

Horizon: North Evans limestone.

Biostratigraphy:

Age: Frasnian Stage, Lower Late Devonian Epoch, Late Devonian.

Material: Dental plate.

Referred material:

E. 1920: Right lower dental plate.

E. 1926: 2 fragments of dental plates exhibiting a portion of a norrow tritor joining a sharp edge.

E. 2412: A number of fragmentary tritors and sectorial margins of dental plates of various sizes.

E. 2413: An imprfec right lolwer dental plate.

E. 2414: Anterior half of an upper dental plate.

E. 2415: 2 imperfect dental plates.

E. 2416: Tritor of a rather large dental plate.

E. 2421: Complete right lower dental plate of a mature individual.

E. 2425: 3 beaks fo lower dental plates.

E. 2426: A left lower dental plate.

E. 2427: An incomplete right lower dental plae.

E. 2429: An imperfect left lower dnetal plate.

E. 2434: Fragmentary dental plate showing the greater porton of the pre-tritoral cutting edge and the front hafl of the tritor of a rather young species.

E. 2437: Well-preserved beak of a large lower dental plate.


Locality: Eighteen Mile Creek, near North Evans, Erie County, New York.

Horizon: Conodont bed.

Biostratigraphy:

Age: Frasnian Stage, Lower Late Devonian Epoch, Late Devonian.

Material:

E. 2456: 3 anterior extremities of upper dental plates of different sizes.


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Species: czarnockii GORIZDRO-KULCZYCKA, 1934
Etymology:

Holotype:

Locality: Holy Cross Mountains, Poland.

Horizon: Calcaire, a Hypothyridina corunula.

Biostratigraphy:

Age: Frasnian Stage, Lower Late Devonian Epoch, Late Devonian.

Material:
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Species: kielcensis GORIZDRO-KULCYCZYCKA, 1934
Etymology:

Holotype:

Locality: Holy Cross Mountains, Poland.

Horizon: Calcaire a Hypothyridina corunula.

Biostratigraphy:

Age: Frasnian Stage, Lower Late Devonian Epoch, Late Devonian.

Material: Dental palte.
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Species: bradyi HUSSAKOF, 1942
Etymology:

Neotype: MNA V6578

Locality: Mount Elden, Coconino County, Northern Arizona.

Horizon: Mt. Elden Formation.

Biostratigraphy:

Age: Frasnian Stage, Lower Late Devonian Epoch, Late Devonian.

Material: A small, relatively deep dental plate.
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