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Papers by Dennis Gordon

Zootaxa, 2021

This short account is an invited contribution to the Zootaxa special volume ‘Twenty years of Zoot... more This short account is an invited contribution to the Zootaxa special volume ‘Twenty years of Zootaxa.’ Zootaxa was first published on 28 May 2001. Between this date and December 2020, 116 papers were published in Zootaxa that mention Bryozoa, comprising mostly descriptions of new species and higher taxa, but also including molecular sequencing (e.g. Fehlauer-Ale et al. 2011; Taylor et al. 2011; Franjevic et al. 2015), invasive-species research (e.g. Ryland et al. 2014; Vieira et al. 2014), checklists (e.g. Vieira et al. 2008), classification (e.g. Bock & Gordon 2013), bryozoans as associates of other organisms (e.g. Rudman 2007; Chatterjee & Dovgal 2020; Chatterjee et al. 2020), metazoan phylogeny (e.g. Giribet et al. 2013), biographies of historical figures who worked on bryozoans (e.g. Calder & Brinkmann-Voss 2011; Calder 2015) and a catalogue of the fossil invertebrate taxa described by William Gabb (including 67 bryozoan species) (Groves & Squires 2018). Of the 116 papers, 15 (1...

Fig. 9. A in An inquiline deep-water bryozoan/amphipod association from New Zealand, including the description of a new genus and species of Chevaliidae

Fig. 9. A. Optical view of the abfrontal side of a distal marginal autozooid (polypide reduced to... more Fig. 9. A. Optical view of the abfrontal side of a distal marginal autozooid (polypide reduced to a residual brown body, bb) adjacent to a lateral kenozooid in which there is a distally tapered (i.e., apically developing) intracoelomic calcareous rod (arrow). B. SEM of a similar view to A but of skeletal elements only, showing the distal tip of the calcareous rod (white arrow) and the communication pores (blue arrowhead) that allow nutrient connectivity between the feeding autozooid and non-feeding kenozooid in which the coelomic cavity comes to be filled by the calcareous rod. C. Fractured transverse section of a calcareous rod showing alternating thick and thin wall-perpendicular prismatic fabric. D. Part of C magnified. Scale bars: A = 200 μm; B = 100 μm; C = 25 μm; D = 5 μm.

Fig. 6 in An inquiline deep-water bryozoan/amphipod association from New Zealand, including the description of a new genus and species of Chevaliidae

Fig. 6. Bryoconversor tutus gen. et sp. nov., holotype, ♀, NIWA 88918, 1.72 mm long. A. Pereopod ... more Fig. 6. Bryoconversor tutus gen. et sp. nov., holotype, ♀, NIWA 88918, 1.72 mm long. A. Pereopod 5. B. Pereopod 6. C. Pereopod 7. D. Pleopod 1. Scale bars = 100 μm.

Marine Biology, 1974

The architecture and function of the lophophore of the marine bryozoan Cryptosula pallasiana (Mol... more The architecture and function of the lophophore of the marine bryozoan Cryptosula pallasiana (Moll) are described, including some new features not previously discovered in bryozoans. The nature of fluid movements within the lophophoral coelom during feeding activities is postulated on the basis of the arrangements of epithelia and muscles. Epithelial cells at the tentacle bases are blastemic in nature, and there is a ciliated pit of unknown function in the angle between every pair of tentacles. There are 6 nerves in each tentacle, including a pair of single-axon subperitoneal nerves. Neurosecretory-like vesicles and glycogen occur in some neurons of the ganglion. The basal lamina collagen has a diameter smaller than that previously recorded for an invertebrate. Filament dimensions are given for several different muscles. Tentacle muscles and lophophore retractor muscles are smooth. Thick paramyosin-like filaments up to 75 nm diameter occur in two muscle types. A new set of muscles is described: the basal transverse muscles of the tentacles.

Journal of Zoological Systematics and Evolutionary Research, 2021

Pherusellid ctenostomes are a little-investigated clade of bryozoans comprising three described s... more Pherusellid ctenostomes are a little-investigated clade of bryozoans comprising three described species that are usually distinguished by their different peristome sizes. In this study, the entire family of Pherusellidae is revised with description of two new species, Pherusella minima from the Mediterranean Sea and Pherusella liowae from Singapore. Serial semithin sections and 3-D reconstruction are used for the first time on an entire family of bryozoans. Soft-tissue morphology yields numerous characters such as details of the digestive tract, duplicature bands, and pore-plate structure that are useful and necessary for species identification. Cystid characters alone are regarded as insufficient for proper species recognition. Numerous previous studies have reported Pherusella tubulosa from Asia, but probably have misidentified this species. Hence, it appears to be restricted to the Atlantic Ocean and Mediterranean Sea. Furthermore, we suggest Pherusella brevituba only occurs in the Pacific Ocean and is not an alien species to the Mediterranean Sea, as previously suggested. We conclude that previous records most likely belong to the new species P. minima, which itself is endemic to the Mediterranean Sea.

Apprehending novel biodiversity redux – thirteen new genera and three new families of Zealandian Bryozoa, with the first living species of the Eocene‒Miocene genus Vincularia (Vinculariidae)

Journal of the Marine Biological Association of the United Kingdom, 2021

Thirteen new genera and three new families of cheilostome Bryozoa are described from the New Zeal... more Thirteen new genera and three new families of cheilostome Bryozoa are described from the New Zealand biogeographic region, centred on Zealandia, between 26.42° (northern Norfolk Ridge) and 54.02°S latitude (south-east Campbell Plateau) from coastal waters to bathyal depths (46‒1676 m). The new genera, comprising 15 new and one previously described Zealandian species, are: Elementella (Elementellidae n. fam.), Niwapora, Quasicallopora, Quitocallopora, Judyella (Calloporidae), Ellisantropora (Antroporidae), Rhizellisina (Ellisinidae), Radixenia (Calloporoidea incertae sedis), Granomurus (Granomuridae n. fam.), Carolanna (Bugulidae), Borioplebs (Borioplebidae n. fam.), Seabournea (Cribrilinidae) and Waeschenbachia (Romancheinidae). A new Recent species of the otherwise Eocene‒Miocene genus Vincularia is also described from deep water on the Three Kings Ridge. Two new combinations are created – Judyella precocialis (Gordon, 1984) and Ellisantropora aggregata (Gordon, 1984). Ellisantropo...

Figure 108 from: Gerdes K, Kihara TC, Martínez Arbizu P, Kuhn T, Schwarz-Schampera U, Mah CL, Norenburg JL, Linley TD, Shalaeva K, Macpherson E, Gordon D, Stöhr S, Messing CG, Bober S, Guggolz T, Christodoulou M, Gebruk A, Kremenetskaia A, Kroh A, Sanamyan K, Bolstad K, Hoffman L, Gooday AJ, Molo...

Figure 10 from: Gerdes K, Kihara TC, Martínez Arbizu P, Kuhn T, Schwarz-Schampera U, Mah CL, Norenburg JL, Linley TD, Shalaeva K, Macpherson E, Gordon D, Stöhr S, Messing CG, Bober S, Guggolz T, Christodoulou M, Gebruk A, Kremenetskaia A, Kroh A, Sanamyan K, Bolstad K, Hoffman L, Gooday AJ, Molod...

Figure 151 from: Gerdes K, Kihara TC, Martínez Arbizu P, Kuhn T, Schwarz-Schampera U, Mah CL, Norenburg JL, Linley TD, Shalaeva K, Macpherson E, Gordon D, Stöhr S, Messing CG, Bober S, Guggolz T, Christodoulou M, Gebruk A, Kremenetskaia A, Kroh A, Sanamyan K, Bolstad K, Hoffman L, Gooday AJ, Molo...

Figure 85 from: Gerdes K, Kihara TC, Martínez Arbizu P, Kuhn T, Schwarz-Schampera U, Mah CL, Norenburg JL, Linley TD, Shalaeva K, Macpherson E, Gordon D, Stöhr S, Messing CG, Bober S, Guggolz T, Christodoulou M, Gebruk A, Kremenetskaia A, Kroh A, Sanamyan K, Bolstad K, Hoffman L, Gooday AJ, Molod...

Figure 24 from: Gerdes K, Kihara TC, Martínez Arbizu P, Kuhn T, Schwarz-Schampera U, Mah CL, Norenburg JL, Linley TD, Shalaeva K, Macpherson E, Gordon D, Stöhr S, Messing CG, Bober S, Guggolz T, Christodoulou M, Gebruk A, Kremenetskaia A, Kroh A, Sanamyan K, Bolstad K, Hoffman L, Gooday AJ, Molod...

Figure 176 from: Gerdes K, Kihara TC, Martínez Arbizu P, Kuhn T, Schwarz-Schampera U, Mah CL, Norenburg JL, Linley TD, Shalaeva K, Macpherson E, Gordon D, Stöhr S, Messing CG, Bober S, Guggolz T, Christodoulou M, Gebruk A, Kremenetskaia A, Kroh A, Sanamyan K, Bolstad K, Hoffman L, Gooday AJ, Molo...

Figure 19 from: Gerdes K, Kihara TC, Martínez Arbizu P, Kuhn T, Schwarz-Schampera U, Mah CL, Norenburg JL, Linley TD, Shalaeva K, Macpherson E, Gordon D, Stöhr S, Messing CG, Bober S, Guggolz T, Christodoulou M, Gebruk A, Kremenetskaia A, Kroh A, Sanamyan K, Bolstad K, Hoffman L, Gooday AJ, Molod...

Figure 20 from: Gerdes K, Kihara TC, Martínez Arbizu P, Kuhn T, Schwarz-Schampera U, Mah CL, Norenburg JL, Linley TD, Shalaeva K, Macpherson E, Gordon D, Stöhr S, Messing CG, Bober S, Guggolz T, Christodoulou M, Gebruk A, Kremenetskaia A, Kroh A, Sanamyan K, Bolstad K, Hoffman L, Gooday AJ, Molod...

Figure 34 from: Gerdes K, Kihara TC, Martínez Arbizu P, Kuhn T, Schwarz-Schampera U, Mah CL, Norenburg JL, Linley TD, Shalaeva K, Macpherson E, Gordon D, Stöhr S, Messing CG, Bober S, Guggolz T, Christodoulou M, Gebruk A, Kremenetskaia A, Kroh A, Sanamyan K, Bolstad K, Hoffman L, Gooday AJ, Molod...

Figure 142 from: Gerdes K, Kihara TC, Martínez Arbizu P, Kuhn T, Schwarz-Schampera U, Mah CL, Norenburg JL, Linley TD, Shalaeva K, Macpherson E, Gordon D, Stöhr S, Messing CG, Bober S, Guggolz T, Christodoulou M, Gebruk A, Kremenetskaia A, Kroh A, Sanamyan K, Bolstad K, Hoffman L, Gooday AJ, Molo...

Figure 218 from: Gerdes K, Kihara TC, Martínez Arbizu P, Kuhn T, Schwarz-Schampera U, Mah CL, Norenburg JL, Linley TD, Shalaeva K, Macpherson E, Gordon D, Stöhr S, Messing CG, Bober S, Guggolz T, Christodoulou M, Gebruk A, Kremenetskaia A, Kroh A, Sanamyan K, Bolstad K, Hoffman L, Gooday AJ, Molo...

Figure 77 from: Gerdes K, Kihara TC, Martínez Arbizu P, Kuhn T, Schwarz-Schampera U, Mah CL, Norenburg JL, Linley TD, Shalaeva K, Macpherson E, Gordon D, Stöhr S, Messing CG, Bober S, Guggolz T, Christodoulou M, Gebruk A, Kremenetskaia A, Kroh A, Sanamyan K, Bolstad K, Hoffman L, Gooday AJ, Molod...

Figure 145 from: Gerdes K, Kihara TC, Martínez Arbizu P, Kuhn T, Schwarz-Schampera U, Mah CL, Norenburg JL, Linley TD, Shalaeva K, Macpherson E, Gordon D, Stöhr S, Messing CG, Bober S, Guggolz T, Christodoulou M, Gebruk A, Kremenetskaia A, Kroh A, Sanamyan K, Bolstad K, Hoffman L, Gooday AJ, Molo...