Jebel El Onk mine, top of main sublayer (Paleocene of Algeria)

Also known as Djebel Onk

Where: Algeria (34.7° N, 8.0° W: paleocoordinates 28.2° N, 8.9° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Thanetian (59.2 - 56.0 Ma)

• Top of the main sub-layer (2) or "a" belonging to the upper unit of the "Upper Thanetian phosphatic beam"

• bed-level stratigraphic resolution

Environment/lithology: poorly lithified, phosphatic claystone

Size class: macrofossils

Collection methods: bulk, sieve

• Repository: Laboratory of Geosciences, Tebessa University, Algeria

Primary reference: S. Boulemia and S. Adnet. 2023. A new Palaeogene elasmobranch fauna (Tebessa region, eastern Algeria) and the importance of Algerian-Tunisian phosphates for the North African fossil record. Annales de Paléontologie 109(102632) [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 232262: authorized by Matthew Clapham, entered by Matthew Clapham on 04.11.2023

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Carcharhiniformes - Scyliorhinidae
Premontreia (Oxyscyllium) subulidens Arambourg 1952 cat shark
Scyliorhinus entomodon Noubhani and Cappetta 1997 cat shark
Scyliorhinus aff. ptychtus Noubhani and Cappetta 1997 cat shark
Abdounia beaugei Arambourg 1935 cat shark
 Carcharhiniformes - Carcharhinidae
Physogaleus secundus Winkler 1876 requiem shark
Physogaleus onkensis n. sp. Boulemia and Adnet 2023 requiem shark
"Rhizoprionodon gantourensis" = Rhizoprionodon ganntourensis Arambourg 1952 sharpnose shark
 Lamniformes - Odontaspididae
Brachycarcharias lerichei Casier 1946 sand tiger shark
Jaekelotodus africanus Arambourg 1952 sand tiger shark
 Lamniformes - Serratolamnidae
"Serratolamna" gafsana White 1926 mackerel shark
 Lamniformes - Otodontidae
Otodus obliquus, "? Cretalamna sp." = Cretolamna
Otodus obliquus Agassiz 1838 mackerel shark
"? Cretalamna sp." = Cretolamna Glikman 1958 mackerel shark
 Lamniformes - Mitsukurinidae
Striatolamia striata Winkler 1874 goblin shark
 Orectolobiformes - Hemiscylliidae
Hemiscylliidae indet. Gill 1862 carpet shark
Chiloscyllium/Hemiscyllium
 Orectolobiformes - Ginglymostomatidae
Ginglymostoma sp., "Ginglymostoma aff. kouribgaense" = Ginglymostoma khouribgaense, Nebrius obliquus
Ginglymostoma sp. Müller and Henle 1838 nurse shark
"Ginglymostoma aff. kouribgaense" = Ginglymostoma khouribgaense Noubhani and Cappetta 1997 nurse shark
Nebrius obliquus Leidy 1877 nurse shark
 Orectolobiformes - Rhinocodontidae
Palaeorhincodon dartevellei Arambourg 1952 carpet shark
 Euselachii -
Rhinopristiformes indet. Last et al. 2016 elasmobranch
?Rhinobatos or ?Pristis
 Squaliformes - Squalidae
Squalus sp. Linnaeus 1758 dogfish shark
 Squatiniformes - Squatinidae
Squatina prima Winkler 1874 angel shark
 Myliobatiformes - Myliobatidae
"Aetomylaeus" cf. striatus Agassiz 1843 eagle ray
"Aetomylaeus" cf. dixoni Agassiz 1843 eagle ray
Garabatis atlasi Cappetta 1993 cow-nosed ray
Archaeomanta priemi Herman 1979 eagle ray
Burnhamia sp. Cappetta 1976 eagle ray
 Myliobatiformes -
Heterotorpedo aff. brahimi Noubhani and Cappetta 1997 stingray
 Myliobatiformes - Dasyatidae
Dasyatis sp. Rafinesque 1810 whiptail stingray