Skeletal Grain types

Worms

1. Thartarella

Rounded micritic tube (bottom right corner) of possible worm affinity addressed as Thartarella in Carbonifeorus mound facies (here associated with Praedonezella algal boundstone).

Pennsylvanian, Asturias, N Spain, cf. Bahamonde et al. (2015, 2017)

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2. Thartarella

Clotted peloidal micrite and fenestellid bryozoans characterize this Moscovian mound facies with Thartarella worm tube on the right side.

Pennsylvanian, Asturias, N Spain, cf. Bahamonde et al. (2015, 2017)

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3. Terebella

Hexactinellid sponge associated with Terebella worm tubes in a sponge microbial mound.

Lower Jurassic, High Atlas, Morocco, cf. Merino-Tome' et al. (2012), Della Porta et al. (2013)

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4. Serpulid

Bivalve packstone with skeletal fragments encrusted by serpulid worm tubes.

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5. Serpulid

Bivalve packstone with serpulid worm tubes (centre right) and brachiopods.

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6. Serpulid

Bryozoan and serpulid worm tubes (centre right) associated with detrital quartz sand grains.

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

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7. Serpulid

Same image as previous observed in crossed polarizers. Bryozoan and serpulid worm tubes (centre right) associated with detrital quartz sand grains.

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

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8. Serpulid

Encrustation of serpulid worms on an erosional surface on a coralline red algae oncoid packstone.

Miocene, Central Apennine, Italy

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9. Serpulid

Skeletal packstone-grainstone with serpulid worms.

Mississippian, South Wales, UK

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10. Serpulid

Serpulids from Upper Jurassic facies (field of view 6 mm).

Upper Jurassic, Southern England, UK

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Thartarella

Praedonezella

Thartarella

fenestellid bryozoan

Terebella

Hexactinellid sponge

serpulid

bivalve

serpulids

bivalve

serpulid

quartz grain

serpulid

quartz grain

Worms

CLOSE

Thartarella

Praedonezella

Thartarella

fenestellid bryozoan

Terebella

Hexactinellid sponge

serpulid

bivalve

serpulids

bivalve

serpulid

quartz grain

serpulid

quartz grain