HD-12, Hassi Djeifa (Cretaceous of Algeria)

Where: Algeria (32.8° N, 1.3° W)

• Paleocoordinates: 26.1° N, 10.7° E (Wright 2013)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Mdaouer Formation, Early/Lower Cenomanian (99.6 - 93.5 Ma)

• Early Cenomanian age based on correlation with Bahariya Formation in Egypt, which contains the same shark species.

• bed-level stratigraphic resolution

Environment/lithology: peritidal; lithified marl

• Algal limestones intercalated in the marls suggest a peritidal environment. Some of the marls contain freshwater charophytes. The ostracods are also freshwater forms.

Size classes: mesofossils, microfossils

Collected in 2015-2017

Collection methods: bulk, chemical

• Repository: Université de Tlemcen

Primary reference: A. Mennad, R. Tabuce, G. Guinot, R. Sarr, M. Benyoucef, M. Bensalah, H. Cappetta, A. Charrière, and M. Adaci. 2020. Découverte d'une nouvelle faune d'âge cénomanien dans la région de Forthassa (Atlas saharien occidental, Algérie): Implications biostratigraphiques et paléoenvironnementales. Annales de Paléontologie 106(102355) [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 213623: authorized by Matthew Clapham, entered by Matthew Clapham on 06.09.2020

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Ostracoda
 Podocopida - Ilyocyprididae
? Ilyocypris sp.
? Ilyocypris sp. Brady and Norman 1889 ostracod
 Podocopida - Candonidae
? Paracypria sp.
? Paracypria sp. Sars 1910 ostracod
 Podocopida - Cyprideidae
Cypridea sp., Damonella "sp. 1", Damonella "sp. 3"
Cypridea sp. Bosquet 1852 ostracod
Actinopteri
 Neopterygii -
Pycnodontiformes indet.
Chondrichthyes
 Rajiformes - Sclerorhynchidae
Baharipristis bastetiae
Baharipristis bastetiae Werner 1989 ray
 Rajiformes -
Mafdetia tibniensis
Mafdetia tibniensis Werner 1989 ray