The karyotype asymmetry plot of echiurans, sipunculids and several annelids. a echiuran, U. unicinctus b echiuran, A. maculata c annelid, N. oligohalina d annelid, P. anderssoni e annelid, H. diversicolor f annelid, D. ghilarovi g annelid, E. balatonica h annelid, A. caliginosa i sipunculid, S. nudus j sipunculids, P. esculenta. symbols: circle, echiurans; square, sipunculids; triangle, polychaeta; hollow triangle, oligochaeta.

 
 
  Part of: Qin Z, Li X, Liu D, Wang Q, Lu L, Zhang Z (2019) Analysis of chromosome karyotype and genome size in echiuran Urechis unicinctus Drasche, 1880 (Polychaeta, Urechidae). Comparative Cytogenetics 13(1): 75-85. https://doi.org/10.3897/CompCytogen.v13i1.31448