The small (3–5 mm in length), disk-shaped fossil has seven hook-like isomers in a star-like arrangement in the clearly expressed peripheral undivided zone.

T. hamulifera is probably a member of Proarticulata, as it is strongly similar to Praecambridium sigillum in the general shape, and the presence of hooklike isomers; Tamga is also similar to Cephalonega stepanovi (syn.

Onega stepanovi) in the flattened body with a compact group of ledges-isomers in the central part encircled by an undivided zone.

[2] The generic name is taken from the Turkish word, "tamga", meaning seal or cattle brand.

The specific name is a crasis compound word, taken from Latin, of hamulus (small hook), and the feminine form of feros, "to bear."