Calci-microbes and microbial fabrics

1. Renalcis

Calcified microbes (upper left) comparable to Renalcis within a clotted peloidal micrite microbial boundstone deposited in a Pennsylvanian upper slope.

Pennsylvanian, Asturias; Della Porta et al. (2003, 2004)

2. Renalcis

Calcified microbes (centre) comparable to Renalcis in an upper slope clotted peloidal micrite microbial boundstone surrounded by micrite crusts and microspar.

Pennsylvanian, Asturias; Della Porta et al. (2003, 2004)

3. Microbial crusts

Undetermined irregular micrite crusts of possible microbial origin around supposed inozoan sponges in a Bashkirian platform margin microbial boundstone reef.

Pennsylvanian, Asturias; Della Porta et al. (2003, 2004)

4. Archaeolithoporella

Archaeolithoporella from Permian phylloid algal mounds.

Permian, New Mexico, USA

5. Ortonella

Calcified cyanobacteria referable to Ortonella from a Moscovian platform margin.

Pennsylvanian, Asturias; Della Porta et al. (2003, 2004)

6. Ortonella

Cross-section of tubes of calcified cyanobacteria (Ortonella) from a Moscovian platform margin.

Pennsylvanian, Asturias; Della Porta et al. (2003, 2004)

7. Cayeuxia

Calcified cyanobacteria (Rivulacean) defined Cayeuxia and characterising Jurassic shallow-water platform settings.

Lower Jurassic, High Atlas, Morocco, cf. Verwer et al. (2009a), Della Porta et al. (2013)

8. Cayeuxia

Calcified cyanobacteria (Rivulacean) defined Cayeuxia and characterising Jurassic shallow-water platform settings.

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

9. Girvanella

Girvanella calcified sheaths of cyanobacteria. Tubes are only a few tens microns in diameter.

Ordovician, Cow Head Group, Newfoundland