41. Side-neck turtles are classified as members of the suborder Pleurodira. 42. Nicholson and Lydekker placed a single family within the suborder , A�tosaurid? 43. Peloridiidae are the only extant family in the suborder Coleorrhyncha. 44. Zittel's aetosaurs were placed in their own suborder , Aetosauria. 45. This condition is found throughout the suborders Hystricomorpha and Anomaluromorpha. 46. The family is included in the suborder Tornoceratina and the superfamily Tornoceratoidea. 47. Thallassoceratoidea are gonitites and one of seventeen superfamilies in the Goniatitina suborder . 48. These spiders are members of the same suborder as tarantulas. 49. Caryophyllales is separated into two suborders : Caryophyllineae and Polygonineae. 50. There are a total of 9 families in this suborder .