Genus: Acrotemnus AGASSIZ, 1836
Etymology:
= Macropycnodon SHIMADA, WILLIAMSON, & SEALEY, 2010
Etymology: Greek, macro (makros), ‘large’, and Greek, pycno (pycnos), ‘thick or dense’, and Greek, odon, (variant of greek odous), ‘tooth’.

Species: faba AGASSIZ, 1839
Etymology:

Holotype:

Locality:

Horizon:

Biostratigaphy:

Age:

Material:

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Species: streckeri (HIBBARD, 1939) SHIMADA, PORTILLO & CRONIN, 2021
= Coelodus streckeri HIBBARD, 1939
Etymology:

Holotype: KUVP 946F

Locality: SE 1/4, Sec. 19 or NE 1/4, Sec. 30, T11S, R14W, 2 1/2 miles south and 1/2 miles east of Paradise, Russell County, Kansas.

Horizon: Fairport Chalk Member, Carlile Shale Formation.

Biostratigraphy:

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

Material: Prevomer plate nearly complete with teeth.

Referred material:

= Acrotemnus cf. A. streckeri SHIMADA, PORTILLO & CRONIN, 2021

Locality: Approximately 400 m downstream from Ernst Tinaja, (TxVP locality #43056), Big Bend natinoal Partk, Brewster County, Texas.

Horizon: Boquillas Fromation.

Biostratigraphy:

Age: Middle Turonian Stage, Late Gallic Subepoch, Early Gulf Epoch, Middle Cretaceous.

Material:

TxVP 43056-3: A partial skeleton including vomer, paired prearticulars, 2 disarticulated dentary (?) teeth, 5 disarticulated pharyngeal teeth, possible left postparietal bone, and 2 paritial cleithra, hyooid, phryngeal, pectoral fin radial elements.

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Species: megafrendodon (SHIMADA, WILLIAMSON & SEALEY, 2010) SHIMADA, PORTILLO & CRONIN, 2021
= Macropycnodon megafrendodon SHIMADA, WILLIAMSON & SEALEY, 2010
Etymology: Greek, mega (megas), ‘large’, Latin, frendo (frendo), ‘crush’, and Greek, odon (variant of Greek odous), ‘tooth’.

Holotype : NMMNH P-44943

Locality: Locality L-5999, Sandoval County, New Mexico.
Note  Exact locality information on file at NMMNH.

Horizon: Mancos Shale.

Biostratigraphy: Prionocyclus macombi Ammonite Zone, Juana Lopez Member.

Age: Upper Turonian Stage, Late Gallic Subepoch, Early Gulf Epoch, Late Cretaceous.

Material : Medial Vomerine Tooth.

Paratypes :

NMMNH P-50892 : ‘Molariform’ tooth.

NMMNH P-50893 : ‘Molariform’ tooth.

NMMNH P-50889 : ‘Molariform’ tooth.

NMMNH P-50891 : ‘Molariform’ tooth.

NMMNH P-50890 : ‘Molariform’ tooth.

NMMNH P-50888 : ‘Molariform’ tooth.

NMMNH P-50887 : ‘Pharyngeal tooth.