In Becetèn (Cretaceous to of Niger)

Also known as Inbécéten, Ibesseten, In Becetem, In Beceten, In'Betetéen

Where: Tahoua, Niger (15.1° N, 6.0° E: paleocoordinates 1.7° N, 0.9° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Inbeceten Formation (Damergou Group), Late/Upper Coniacian to Late/Upper Coniacian (89.3 - 83.6 Ma)

• layer enclosed by two well-dated beds (biostratigraphically), described as "lower Senonian"

•"late Coniacian-Santonian (Báez and Rage 1998)

• bed-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; black, gray shale and sandstone

• "fluvial-lacustrine" (Báez and Rage 1998)
• "a formation composed of an alternation of clays and limestones"; vertebrates are in one of the clay beds

•"shales and sandstones" (Báez and Rage 1998)

Size classes: macrofossils, mesofossils

Collected by Greigert, F. de Broin, D. E. Russell, P. Taquet in 1966, 1970–1973; reposited in the MNHN

Collection methods: bulk, surface (float), surface (in situ), sieve,

• "Most fossils lie exposed on the ground surface... A large number of the specimens collected came from screen-washing operations" (Báez and Rage 1998)

Primary reference: F. de Broin, E. Buffetaut, J.-C. Koeniguer, J.-C. Rage, D. E. Russell, P. Taquet, C. Vergnaud-Grazzini and S. Wenz. 1974. La fauna de Vertébrés continentaux du gisement d'In Beceten (Sénonien du Niger) [The continental vertebrate fauna from the In Beceten locality (Senonian of Niger)]. Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences à Paris, série D 279:469-472 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 48867: authorized by Matthew Carrano, entered by Matthew Carrano on 01.04.2005, edited by John Alroy and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Angiospermae
  -
Dicotyledoneae indet.
silicified trunks
Osteichthyes
 Dipnoi - Ceratodontidae
Ceratodus sp. Agassiz 1838 lungfish
 Ceratodontiformes - Lepidosirenidae
Protopterus sp. Agassiz 1843 african lungfish
Amphibia
 Salientia - Pipidae
"Pachybatrachus taqueti n. gen. n. sp." = Pachycentrata taqueti1
"Pachybatrachus taqueti n. gen. n. sp." = Pachycentrata taqueti1 Báez and Rage 1998 clawed frog
"very close to Xenopus"; MNHN-IBC 1404
 Salientia -
Inbecetenanura ragei n. gen. n. sp.3
Inbecetenanura ragei n. gen. n. sp.3 Lemierre et al. 2023 frog
new form; MNHN.F.IBC 1602
 Salientia - Ranidae
Ranidae indet. Rafinesque 1814 frog
 Caudata - Urodela
Urodela indet. salamander
Reptilia
 Testudines - Pelomedusidae
Pelomedusidae indet. Cope 1868 sideneck turtle
similar to Podocnemis
 Testudines - Podocnemididae
Erymnochelys madagascariensis Grandidier 1867 sideneck turtle
 Serpentes -
Serpentes indet. snake
same as undescribed genus from Paleocene of Niger
 Squamata - Madtsoiidae
Madtsoia aff. madagascariensis5 Hoffstetter 1961 snake
similar to M. madagascariensis but with some differences of possible specific value
 Squamata -
 Loricata -
cf. Araripesuchus sp.4 Price 1959 crocodilian
Trematochampsa taqueti n. gen. n. sp.2 Buffetaut 1974 crocodilian
Tethysuchia indet.4 crocodilian
"provisionally assigned"
 Avetheropoda -
 Saurischia - Titanosauridae
Titanosaurinae indet. Lydekker 1893 titanosaurid
Actinopteri
 Lepisosteiformes - Lepisosteidae
Lepisosteidae indet. Cuvier 1825 gar
"close to the genus Paralepidosteus"
 Holostei - Gigantodontidae
Stromerichthys sp. Weiler 1935
 Amiiformes - Amiidae
Amia sp. Linnaeus 1766 bowfin