English: The proarticulatan Lossinia lissetski, from what is now the shores of the White Sea. While its status as a proarticulatan is not in doubt, what with displaying the diagnostic "staggered symmetry," its position within Proarticulata is uncertain, aside from being very closely related to Onega stepanovi and possibly Tamga hamulifera.L. lissetski was a very small animal, being around 2 millimeters in length.