- 1856 Type
species †Ischyrhiza mira Leidy, 1856
Species †I.
antiquus †I.
avonicola Estes, 1964 †I. marroc**** †I. mira Leidy, 1856 †I.
stromeri †I. texana...
- sawskate. It is
known only
isolated rostral teeth. †Ischyrhiza †I. mira †I.
avonicola Turonian-Thanetian ~89.3–55.8 mya Africa, the
Middle East,
North America...
- †Inoceramus †Ischyodus †Ischyodus
bifurcatus †Ischyrhiza †Ischyrhiza
avonicola – or
unidentified comparable form †Ischyrhiza mira †Jeletzkytes Lepisosteus...
- Quarry,
North Carolina Island Cr**** A
whiptail stingray.
Ischyrhiza I.
avonicola Martin-Marietta
Castle Hayne Quarry,
North Carolina Island Cr**** A sawskate...
-
garadoti Ginglymostoma sp.
Heterodontus sp.
Hybodus sp.
Ischyrhiza cf.
avonicola Ischyrhiza mira
Myliobatis sp.
Odontaspis aculeatus Plicatoscyllium antiquum...
-
Nestell & Nestell, 2012 †Texatrygon
Cappetta & Case, 1999 †Texatrygon
avonicola Estes, 1964 †Texatrygon
brycensis Kirkland,
Eaton & Brinkman, 2013 †Texatrygon...
-
sandstone member. A
single incomplete tooth. A myliobatid.
Ischyrhiza I. cf.
avonicola Ten Bits Ranch, west Texas.
Rattlesnake Mountain sandstone member. 5 complete...
-
Species Location Stratigraphic position Abundance Notes Ischyriza cf. I.
avonicola Sclerorhynchidae Lonchidion L.
selachos Lonchidiidae Myledaphus M. bipartitus...
- †Iqualadelphis
lactea †Ischyodus †Ischyodus
bifurcatus †Ischyrhiza †Ischyrhiza
avonicola †Ischyrhiza mira †Isocyprina – or
unidentified comparable form †Isocyprina...
- †Inoceramus
tenuistriatus –
tentative report †Ischyrhiza †Ischyrhiza
avonicola – or
unidentified comparable form †Jeletzkytes †Jeletzkytes
brevis †Jeletzkytes...
