Tagawa, K.; Nishino, A; Humphreys, T; Satoh, N. (1 January 1998). "The Spawning and Early Development of the Hawaiian Acorn worm (Hemichordate), Ptycodhera flava". Zoological Science. 15 (1): 85–91. doi:10.2108/zsj.15.85. hdl:2433/57230. PMID18429670. S2CID36332878.
Lester, SM (June 1988). "Settlement and metamorphosis of Rhabdopleura normani (Hemichordata: Pterobranchia)". Acta Zoologica. 69 (2): 111–120. doi:10.1111/j.1463-6395.1988.tb00907.x.
Lester, SM (1986). "Ultrastructure of adult gonads and development and structure of the larva of Rhabdopleura normani". Acta Zoologica. 69 (2): 95–109. doi:10.1111/j.1463-6395.1988.tb00906.x.
Henry, JQ; Tagawa, K; Martindale, MQ (November–December 2001). "Deuterostome evolution: early development in the enteropneust hemichordate, Ptychodera flava". Evolution & Development. 3 (6): 375–90. doi:10.1046/j.1525-142x.2001.01051.x. PMID11806633. S2CID24071389.
Colwin, A; Colwin, L (1950). "The developmental capacities of separated early blastomeres of an enteropneust, Saccoglossus kowalevskii". Journal of Experimental Zoology. 155 (2): 263–296. Bibcode:1950JEZ...115..263C. doi:10.1002/jez.1401150204.
Colwin, A; Colwin, L (1951). "Relationships between the egg and larva of Saccoglossus kowalevskii (Enteropneusta): axes and planes; general prospective significance of the early blastomeres". Journal of Experimental Zoology. 117 (1): 111–138. Bibcode:1951JEZ...117..111C. doi:10.1002/jez.1401170107.
Colwin, Arthur L.; Colwin, Laura Hunter (May 1953). "The normal embryology of saccoglossus kowalevskii (enteropneusta)". Journal of Morphology. 92 (3): 401–453. doi:10.1002/jmor.1050920302. S2CID85420179.
Ramírez-Guerrero, G. M.; Kocot, K. M.; Cameron, C. B. (2020). "Zooid morphology and molecular phylogeny of the graptolite Rhabdopleura annulata (Hemichordata, Pterobranchia) from Heron Island, Australia". Canadian Journal of Zoology. 98 (12): 844–849. doi:10.1139/cjz-2020-0049. S2CID228954598.
Tagawa, K.; Nishino, A; Humphreys, T; Satoh, N. (1 January 1998). "The Spawning and Early Development of the Hawaiian Acorn worm (Hemichordate), Ptycodhera flava". Zoological Science. 15 (1): 85–91. doi:10.2108/zsj.15.85. hdl:2433/57230. PMID18429670. S2CID36332878.
Colwin, A; Colwin, L (1950). "The developmental capacities of separated early blastomeres of an enteropneust, Saccoglossus kowalevskii". Journal of Experimental Zoology. 155 (2): 263–296. Bibcode:1950JEZ...115..263C. doi:10.1002/jez.1401150204.
Colwin, A; Colwin, L (1951). "Relationships between the egg and larva of Saccoglossus kowalevskii (Enteropneusta): axes and planes; general prospective significance of the early blastomeres". Journal of Experimental Zoology. 117 (1): 111–138. Bibcode:1951JEZ...117..111C. doi:10.1002/jez.1401170107.
Tagawa, K.; Nishino, A; Humphreys, T; Satoh, N. (1 January 1998). "The Spawning and Early Development of the Hawaiian Acorn worm (Hemichordate), Ptycodhera flava". Zoological Science. 15 (1): 85–91. doi:10.2108/zsj.15.85. hdl:2433/57230. PMID18429670. S2CID36332878.
Henry, JQ; Tagawa, K; Martindale, MQ (November–December 2001). "Deuterostome evolution: early development in the enteropneust hemichordate, Ptychodera flava". Evolution & Development. 3 (6): 375–90. doi:10.1046/j.1525-142x.2001.01051.x. PMID11806633. S2CID24071389.
Tagawa, K.; Nishino, A; Humphreys, T; Satoh, N. (1 January 1998). "The Spawning and Early Development of the Hawaiian Acorn worm (Hemichordate), Ptycodhera flava". Zoological Science. 15 (1): 85–91. doi:10.2108/zsj.15.85. hdl:2433/57230. PMID18429670. S2CID36332878.
Henry, JQ; Tagawa, K; Martindale, MQ (November–December 2001). "Deuterostome evolution: early development in the enteropneust hemichordate, Ptychodera flava". Evolution & Development. 3 (6): 375–90. doi:10.1046/j.1525-142x.2001.01051.x. PMID11806633. S2CID24071389.
Colwin, Arthur L.; Colwin, Laura Hunter (May 1953). "The normal embryology of saccoglossus kowalevskii (enteropneusta)". Journal of Morphology. 92 (3): 401–453. doi:10.1002/jmor.1050920302. S2CID85420179.
Ramírez-Guerrero, G. M.; Kocot, K. M.; Cameron, C. B. (2020). "Zooid morphology and molecular phylogeny of the graptolite Rhabdopleura annulata (Hemichordata, Pterobranchia) from Heron Island, Australia". Canadian Journal of Zoology. 98 (12): 844–849. doi:10.1139/cjz-2020-0049. S2CID228954598.