Children (70 direct children, 734 direct and indirect children):
Vetus
(tree size 3)
Bispiculum
(tree size 1)
Blepharomermis
(tree size 1)
Austromermis
(tree size 1)
Aranimermis
(tree size 2)
Psammomermis
(tree size 8)
Thaumamermis
(tree size 2)
Mermis
(tree size 11)
Gammaromermis
(tree size 4)
Nematimermis
(tree size 1)
Echinomermella
(tree size 2)
Gastromermis
(tree size 115)
Baikalomermis
(tree size 8)
Mesomermis
(tree size 61)
Spiculimermis
(tree size 22)
Abathymermis
(tree size 14)
Paramermis
(tree size 21)
Mermithinae
Fibromermis
(tree size 1)
Reesimermis
(tree size 5)
Heydenius
(tree size 17)
Heydonius
Cretacimermis
(tree size 3)
Agamermis
(tree size 3)
Amphimermis
(tree size 4)
Hexamermis
(tree size 15)
Melolonthimermis
(tree size 1)
Oesophagomermis
(tree size 3)
Pheromermis
(tree size 12)
Tunicamermis
(tree size 1)
Utriculimermis
(tree size 1)
Thalassomermis
(tree size 1)
Agamomermis
(tree size 5)
Amphibiomermis
(tree size 5)
Anomalomermis
(tree size 1)
Aquaemermis
(tree size 4)
Bathymermis
(tree size 9)
Brevimermis
(tree size 7)
Capitomermis
(tree size 9)
Culicimermis
(tree size 2)
Dendromermis
(tree size 1)
Ditremamermis
(tree size 2)
Diximermis
(tree size 1)
Drilomermis
(tree size 1)
Empidomermis
(tree size 2)
Eumermis
(tree size 2)
Eurymermis
(tree size 13)
Heleidomermis
(tree size 3)
Hydromermis
(tree size 62)
Ipatjevimermis
(tree size 1)
Isomermis
(tree size 14)
Isthmusimermis
(tree size 6)
Lanceimermis
(tree size 24)
Limnomermis
(tree size 61)
Neolimnomermis
(tree size 1)
Neomesomermis
(tree size 7)
Notonectomermis
(tree size 1)
Octomermis
(tree size 1)
Octomyomermis
(tree size 14)
Odonatomermis
(tree size 3)
Perutilimermis
(tree size 1)
Phreatomermis
(tree size 2)
Pseudomermis
(tree size 9)
Quadrimermis
(tree size 4)
Romanomermis
(tree size 14)
Strelkovimermis
(tree size 20)
Telomermis
(tree size 2)
Tetradomermis
(tree size 1)
Tetramermis
(tree size 3)
Torsiomermis
(tree size 1)
Unicamermis
(tree size 1)