found: Leadbeater, B.S.C. The choanoflagellates, 2015:p. 16 (most recent phylogenetic analysis recovers two major clades within the class Choanoflagellatea; first clade, Order Craspedida, includes all choanoflagellates with entirely organic coverings; second clade, Order Acanthoecida, includes all species with siliceous loricae) p. 28 (loricate species (acanthoecids))
found: World register of marine species, via WWW, Aug. 16, 2018(Acanthoecida. Rank: Order. Parent: Class Choanoflagellatea)
found: AlgaeBase, via WWW, Aug. 16, 2018(Order Acanthoecida, Class Choanoflagellatea)
found: The journal of eukaryotic microbiology, v. 58(5) (Sep-Oct 2011):pp. 459-460 (Class Choanoflagellatea, Order Acanthoecida has two families: Acanthoecidae and Stephanoecidae)
found: European journal of protistology, v. 50, issue 4 (Aug. 2014):p. 430 (Currently choanoflagellates are classified into two distinct orders: loricate Acanthoecida and non-loricate Craspedida) p. 431 (order Acanthoecida) p. 433 (acanthoecid choanoflagellates)
