Skeletal Grain types

Echinoderms

1. Crinoid

Crinoidal grainstone with syntaxial calcite cement, bryozoan fragments and Tetrataxid foraminifera.

Mississippian, South Wales, UK

HIDE INFO

SHOW INFO

2. Crinoid

Crinoidal grainstone with syntaxial calcite cement and bryozoan fragments.

Mississippian, New Mexico, USA

HIDE INFO

SHOW INFO

3. Crinoid

Crinoidal packstone with crinoid ossicles affected by micro-borings in a Moscovian outer platform setting.

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

HIDE INFO

SHOW INFO

4. Crinoid

Crinoidal grainstone with syntaxial calcite cement andcrinoid ossicles affected by micro-borings and associated with fenestellid bryozoan fragments in a Moscovian outer platform setting.

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

HIDE INFO

SHOW INFO

5. Echinoid spine

Micrite coated grain packstone with a transversal section of a coated echinoid spine (bottom left) and micrite coated Lenticulina.

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

HIDE INFO

SHOW INFO

6. Echinoid spine

Skeletal wackestone from Tithonian (upper Jurassic) basinal facies containing an echinoid spine (centre) and calpionellids (centre right).

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

HIDE INFO

SHOW INFO

7. Echinoid

Echinoderm fragment (spine?) from Lower Cretaceous strata (field of view 1.6 mm).

Lower Cretaceous, Faringdon, UK

HIDE INFO

SHOW INFO

8. Echinoderm

Porous (blue epoxy) packstone to grainstone with echinoderm plates with syntaxial calcite overgrowths from Eocene strata offshore India.

Eocene, Mukta Field, Bombay High, offshore India

HIDE INFO

SHOW INFO

9. Echinoid spine

Porous packstone to grainstone with an echinoid spine in the centre.

Eocene, Panna Field, Bombay High, offshore India

HIDE INFO

SHOW INFO

10. Echinoid spines

Echinoid spines and a plate in a Cretaceous wackestone.

Turonian (Cretaceous), Miskar Field, offshore Tunisia

HIDE INFO

SHOW INFO

crinoid ossicle

Tetrataxis

Crinoid

borings on crinoid

syntaxial cement on crinoid

fenestellid bryozoan

echinoid spine

Lenticulina foraminifer

echinoid spine

calpionellid

Echinoderms

CLOSE

crinoid ossicle

Tetrataxis

Crinoid

borings on crinoid

syntaxial cement on crinoid

fenestellid bryozoan

echinoid spine

Lenticulina foraminifer

echinoid spine

calpionellid