Vendotaenid

Vendotaenids are ribbon-shaped, carbonaceous, Precambrian macrofossils. They are thought to represent giant sulfide-reducing bacteria, similar to "Thiomargarita". Many form genera, including Vendotaenida, have been described.
Morphology.
The fossils reach around 15 cm in length and are around a millimetre in width.
Affinity.
Originally interpreted as brown algae, the fossils are now thought to represent sulfide-reducing bacteria.
Occurrence.
The carbonaceous fossils, which can be extracted by HF dissolution, are found in precambrian to Early Cambrian rocks, dating from approx. .