Cephalopods

2. Ammonite

Skeletal packstone with fragments of ammonites from Jurassic basinal facies.

Thin section kindly provided by T. Geel, Vrije Universiteit, Amsterdam

3. Ammonite

Skeletal wackestone/floatstone with a section of ammonite geopetally filled by carbonate mud matrix and calcite spar associated with skeletal debris of bivalves, brachiopods and echinoderms.

Lower Jurassic, High Atlas, Morocco, cf. Merino-Tome' et al. (2012)

4. Ammonite

Skeletal wackestone to packstone with an ammonite cross-section on the left, bivalve shells on the right and a crinoid fragment in the upper right corner.

Lower Jurassic, High Atlas, Morocco, cf. Merino-Tome' et al. (2012)

5. Ammonite

A particular of a fragment of ammonite shell replaced by calcite spar because of its original aragonite composition in a peloidal packstone.

Lower Jurassic, High Atlas, Morocco, cf. Merino-Tome' et al. (2012)

6. Apthycus

Skeletal wackestone from upper Jurassic basinal facies with an apthycus of ammonite (centre left) associated with thin-shelled bivalves. Apthyci were originally calcitic in composition.

Thin section kindly provided by T. Geel, Vrije Universiteit, Amsterdam

7. Ammonite

Skeletal wackestone from a Jurassic slope facies showing in the centre left a section of ammonite shell filled by prismatic radial fibrous cement followed by limpid blocky sparite.

Lower Jurassic, High Atlas, Morocco, cf. Merino-Tome' et al. (2012)

8. Ammonite

Skeletal peloidal packstone from Jurassic outer ramp facies showing a cross-section of an ammonite.

Lower Jurassic, High Atlas, Morocco, cf. Merino-Tome' et al. (2012)