In Touhout (bed 4) (Cretaceous of Niger)

Also known as In Touhount

Where: Tahoua, Niger (15.4° N, 5.7° E: paleocoordinates 5.2° N, 0.5° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Dukamaje Formation, Maastrichtian (72.1 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marginal marine; gray marl

• gray marl and gray clay-shale

Size classes: macrofossils, mesofossils

Primary reference: R. T. J. Moody and P. J. C. Suttcliffe. 1991. The Cretaceous deposits of the Iullemmeden Basin of Niger, central West Africa. Cretaceous Research 12:137-157 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 178660: authorized by Matthew Carrano, entered by Matthew Carrano on 09.05.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

• Moody & Sutcliffe (1991) listed the presence of Trematochampsa taqueti and Libycosuchus sp. in this formation, but they provided no further details. Nicholl et al. (2021) suggested that this was a mistake, with the In Beceten Formation (Niger) faunal list accidentally incorporated; these occurrences have therefore been removed from this collection

•be confirmed.

unclassified
  -
Bivalvia
 Ostreida - Gryphaeidae
""Ostrea" boucheroni" = Curvostrea tevesthensis
""Ostrea" boucheroni" = Curvostrea tevesthensis Coquand 1862 oyster
 Ostreida - Ostreidae
? Acutostrea sp. Vyalov 1936 oyster
 Cardiida - Arcticidae
Veniella sp. Stoliczka 1870 clam
 Cardiida - Veneridae
"Pitarinae indet." = Callocardiinae
"Pitarinae indet." = Callocardiinae Dall 1895 venus clam
 Pholadida - Corbulidae
Corbulidae indet. Lamarck 1818 clam
Cephalopoda
 Ammonitida - Sphenodiscidae
Libycoceras sp. Hyatt 1900 ammonite
Reptilia
 Testudines - Pelomedusidae
Pelomedusidae indet. Cope 1868 sideneck turtle
 Testudines - Podocnemididae
Podocnemis sp. Wagler 1830 river turtle
Osteichthyes
 Dipnoi - Ceratodontidae
Ceratodus sp. Agassiz 1838 lungfish
Actinopteri
 Aulopiformes - Dercetidae
 Tetraodontiformes - Eotrigonodontidae
Stephanodus lybicus Zittel 1888
 Teleostei -
 Pycnodontiformes - Pycnodontidae
Pycnodus sp. Agassiz 1833
Chondrichthyes
 Hybodontiformes - Acrodontidae
Asteracanthus aegyptiacus Stromer 1927 elasmobranch
 Orectolobiformes - Ginglymostomatidae
Ginglymostoma sp. Müller and Henle 1838 nurse shark
 Lamniformes - Lamnidae
Lamna nigeriana mackerel shark
 Euselachii -
Batomorphii indet. Cappetta 1980 elasmobranch
 Rajiformes - Sclerorhynchidae
Sclerorhynchidae indet. Capetta 1974 ray
Schizorhiza stromeri Weiler 1930 ray
Ischyrhiza nigeriensis Tabaste 1963 ray
 Myliobatiformes - Myliobatidae
Igdabatis sigmodon Cappetta 1972 eagle ray