Where: Morocco (33.6° N, 7.6° W: paleocoordinates 33.4° N, 8.2° W)
• coordinate based on nearby landmark
When: Miocene to Miocene (23.0 - 2.6 Ma)
• Two members are present in the quarry. 'Member 1: a pink facies of altered calcarenite, containing internal molds of gastropods and rare fragments of thick bone'. Member 2: associated with a paleo-shoreline, with large vertebrate bones and towards the top, washout pockets rich in micromammals and larger vertebrates.
•Member 2: this is associated with a paleo-shoreline in a micro-cliff cut within Member 1; its facies characterizes an infratidal to supratidal environment; a basal conglomerate is visible resting on a substratum of quartzites at about 155m above present sea level; one observes a vertical and lateral transition to a capping aeolianite that conceals the relict shoreline and overlaps deposits of member 1; large bones of vertebrates are scattered in the eolianite. Towards the top of member 2, washout pockets contain a bioclastic sediment formed from the remains of biocalcarenite, rich in bony fragemnts of micro-mammals and larger vertebrates.'
Size class: mesofossils
Collection methods: bulk,
• Material held in the collections of INSAP, Rabat.
Primary reference: J.P. Raynal, D. Lefevre, D. Geraads and M. El Graoui. 1999. Contribution du site paleontologique de Lissasfa (Casablanca, maroc) a une nouvelle interpretation du Mio-Pliocene de la Meseta. Comptes Rendues de l'Academie des Sciences, Paris, Sciences de la terre et des planetes 329:617-622 [A. Turner/H. O'Regan/H. O'Regan]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 34366: authorized by Alan Turner, entered by Hannah O'Regan on 28.08.2003, edited by Evangelos Vlachos
Creative Commons license: CC BY (attribution)