Species

Immergentia zelandica Silén, 1946

Taxon description

Silén, 1946

The zoids are very irregularly placed. Their mostly numerous, thread-like processes are extremely thin and form a network.

The length of the zoid averages 0.31 mm, its breadth 0.08 mm. The abanal part of its proximal end forms a distinct, fingershaped but short projection within which the proximal end of the retractor muscle is fixed. The number of the tentacles is 9.

Synonymy list
1946     Immergentia zelandica n. sp. — Silén , pp. 6, fig. Figs 11-12
Classification
Organism groupBiota
Ichnofossil groupIchnofossils
Bioerosional trace fossils
GenusImmergentia
Speciescalifornica
cruciata
zelandica