Adrar Mgorn 1bis (Paleocene of Morocco)

Where: Meknès-Tafilalet, Morocco (31.6° N, 5.7° W: paleocoordinates 24.8° N, 7.5° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Jbel Guersif Formation (Subatlas Group), Thanetian (59.2 - 56.0 Ma)

• Late or latest Thanetian

• bed-level stratigraphic resolution

Environment/lithology: peritidal; limestone

• "nearshore marine setting" (Gingerich, 1990).

•"Both the Jbel Guersif and Ait Ouarhitane Formations were deposited in shallow marine environment, but terrestrial vertebrates (mammals and lepidosaurians) are numerous in the faunas. The floras indicate that deposition of the vertebrate remains took place in proximity of a mangrove under tropical conditions, whereas the hinterland was covered by a tropical forest" (Augé & Rage, 2006).

•"For the late Thanetian Jbel Guersif Formation, Kuss and Herbig (1993, figs. 5, 6) deduced a tidal flat and restricted lagoon in the easternmost 30 kilometers of the outcrop area around Tinerhir [...]" (Dragastan & Herbig, 2007), which geographically exactly applies for Adrar Mgorn.

•According to the latter two quotes, the original environment entry >>marginal marine indet.<< was altered (TL).

•The Ouarzazate Basin is a foreland Basin according to Tawadros (2012).

• Carbonate

Size classes: macrofossils, mesofossils

Reposited in the MNHN

Primary reference: E. Gheerbrant, J. Sudre, S. Sen, C. Abrial, B. Marandat, B. Sigé, and M. Vianey-Liaud. 1998. Nouvelles données sur les mammifères du Thanétien et de l'Yprésien du bassin d'Ouarzazate (Maroc) et leur contexte stratigraphique. Palaeovertebrata 27(3-4):155-202 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 137197: authorized by Philip Mannion, entered by Philip Mannion on 11.12.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

 Tribosphenida -
Eutheria " sp. 1 " eutherian
THRbis 5 (tooth)
Eutheria " sp. 2 " eutherian
THRbis 6 (tooth)
Eutheria " sp. 3 " eutherian
THRbis 7 (tooth)
 Cimolesta - Todralestidae
Todralestes variablis Gheerbrant 1991 eutherian
THRbis 4 and 4 (teeth)
 Tribosphenida -
Euarchontoglires indet. Murphy et al. 2001 placental
Primates or Plesiadapiformes; THRbis 2 (tooth)
 Tribosphenida - Adapisoriculidae
Afrodon cf. chleuhi Gheerbrant 1988 placental