Figure 44. Evolution scheme for a in What is a 'strong' synapomorphy? Redescriptions of Murray's type species and descriptions of new taxa challenge the systematics of Hypsibiidae (Eutardigrada: Parachela)

Figure 44. Evolution scheme for a tardigrade clade, where the blue triangle and red rectrangle signify newly erected genera ('apical taxa' in the paper by Tumanov and Tsvetkova 2023) with 'strong apomorphies', i.e. the set of well-defined, advanced morphological characters, distinguished from the previous broadly defined genus, whose members (marked with black circles) are still classified as the original genus, which became artificial but cannot be divided further because the lineages group species with mainly (or solely) plesiomorphic characters.