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Fig. 3 in Morphogenetic gradients in graptolites and bryozoans
Fig. 3. Variation of morphological characters of zooidal tubes (thecae) along the colony axis. A. Didymograptus pakrianus Jaanusson, only one branch of the biramous colony presented. B. Monograptus clingani (Carruthers). C. "Monograptus" (= Pernerograptus) argenteus (Nicholson). A, B belong to uniform type and exhibit mainly size gradient, while C represents a biform type, with distinct differences in morphology of proximal and distal thecae. Not to scale. From Urbanek (1973).
Fig. 4. A in Morphogenetic gradients in graptolites and bryozoans
Fig. 4. A. Variation of morphological characters of zooidal tubes (thecae) along the colony axis in Cucullograptus aversus Urbanek (A1), details of structure of apertural apparatus within the proximal, medial and distal thecae (A2–A4). B. Pristiograptus dubius (Suess), thecae with growth bands shown diagrammatically. A is a biform type with the strongest expression of characters in the distal part of the colony, while B is a uniform type exhibiting mainly the size gradient. Not to scale. From Urbanek (1973).
Fig. 2 in Morphogenetic gradients in graptolites and bryozoans
Fig. 2. Diagram illustrating the structure and terminology of a proximal part in a monograptid colony composed of a series of zooids arranged along a single axis. Arrow indicates the direction of colony growth. Note the presence of sicula, the zooidal tube of the oozooid, and a number of zooidal tubes (called thecae, 1–5), and occupied by asexually produced zooids (blastozooids); the nema is a thread−like prolongation of the apex of sicula, serving as a skeletal axis for the growing colony. Modified from Urbanek (1973).
Fig. 10 in Morphogenetic gradients in graptolites and bryozoans
Fig. 10. Ancestrulae and early astogeny in bryozoan colonies. A. Idealized diagram showing organization of a gymnolaemate bryozoan colony, 1–3 successive generations of blastozooids. B. Early stage of astogeny in a colony of a Recent ascophoran cheilostomate Metrarabdotos, showing ancestrula and three autozooecia placed immediately distally to it. C. Ancestrula of a Recent ctenostome Amathia lendigera with a stolon on which all new buds will generate. Not to scale. A, from Cheetham (1986); B, from Cook (1973); C, from Zimmer and Woollacott (1977).
Paleozoic origins of cheilostome bryozoans and their parental care inferred by a new genome-skimmed phylogeny
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Data from: Cladistic analysis of the Paleozoic bryozoan family Monticuliporidae and Mesotrypidae
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Telychian Bryozoa, Matrix (Bryozoans from the lower Silurian (Telychian) Hanchiatien Formation from southern Chongqing, South China)
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Figure 10 from: Šatkauskienė I, Wood T, Rutkauskaitė-Sucilienė J, Mildažienė V, Tučkutė S (2018) Freshwater bryozoans of Lithuania (Bryozoa). ZooKeys 774: 53-75. https://doi.org/10.3897/zookeys.774.21769
Figure 10 Fragment colony of Paludicella articulata. Scale bar: 1 mm.
Text-fig. 1. Location of the study area (Ďurkovec quarry). in The Priabonian Bryozoan-Decapod Association From The Borové Formation (The Ďurkovec Quarry, Ne Slovakia) And Its Palaeoecological Implications
Text-fig. 1. Location of the study area (Ďurkovec quarry).
FIGURE 18. Disporella phaohoa n in Taxonomy and diversity of coelobite bryozoans from drift coral cobbles on Co To Island, northern Vietnam
FIGURE 18. Disporella phaohoa n. sp. A, B, D–F. VNMN-0268, three colonies; C. Paratype, VNMN-0269. A. Paratype, colony with one macula. B. Paratype, alveoli. C. Paratype, colony with one macula. D. Holotype, colony with irregular, elongate macular center, showing broken ooecium just to left of center. E. Paratype, colony in oblique view, showing raised peristomes at margin. F. Paratype, enlargement from colony in E from slightly different angle, showing constricted orifice (lower left) and presumed ooeciostome (arrowhead). Scale bars: A, C–E, 1 mm; B, 100 µm; F, 250 µm.
FIGURE 17. Rhynchozoon latiavicularium n in Taxonomy and diversity of coelobite bryozoans from drift coral cobbles on Co To Island, northern Vietnam
FIGURE 17. Rhynchozoon latiavicularium n. sp. A–C. Paratype, VNMN-0265; D–F. Holotype, VNMN-0264. A. Colony. B. Marginal autozooids in frontodistal view, showing orifices and suboral avicularia. C. Enlargement of orifices. D. Colony surface, showing numerous frontal avicularia; ooecia also abundant. E. Suboral and frontal avicularia; note that avicularia can have rounded (arrows) or more acute (white arrowheads) proximal end of rostrum; also note V-shaped crossbar elements (black arrowheads) of avicularia. F. Immersed ooecia. Scale bars: A, 1 mm; B, D, 500 µm; C, 100 µm; E, 125 µm; F, 250 µm.
FIGURE 16. Rhynchozoon setiavicularium n in Taxonomy and diversity of coelobite bryozoans from drift coral cobbles on Co To Island, northern Vietnam
FIGURE 16. Rhynchozoon setiavicularium n. sp., holotype, VNMN-0263. A. Young autozooids at colony margin. B. Older portion of colony, showing suboral avicularia with slight uncinus (arrowhead), and frontal avicularia with narrow rostrum and simple crossbar (arrow). C. Orifice. D. Immersed ooecia, with wide labellum (arrowhead) and flat, vertical exposed endooecial panel in peristome. E. Autozooids in frontodistal view, showing right-angled suboral avicularian mandibular rostra. F. Colony surface, showing decurved frontal avicularia and scattered nodules. Scale bars: A, 500 µm; B, F, 250 µm; C, 100 µm; D, E, 150 µm.
FIGURE 15 in Taxonomy and diversity of coelobite bryozoans from drift coral cobbles on Co To Island, northern Vietnam
FIGURE 15. Rhynchozoon lunifrons Dick & Grischenko, 2017, VNMN-0262. A. Colony. B. Autozooids near colony margin. C. Orifice shape. D. Autozooids near colony margin, showing suboral avicularia. E. Colony, showing numerous small frontal avicularia. F. Autozooids with ooecia. Scale bars: A, 1 mm; B, E, 500 µm; C, 100 µm; D, F, 250 µm.
FIGURE 10. A. Hippopodina adunca Tilbrook, 2006 in Taxonomy and diversity of coelobite bryozoans from drift coral cobbles on Co To Island, northern Vietnam
FIGURE 10. A. Hippopodina adunca Tilbrook, 2006, VNMN-0239, autozooids, with one ooecium. B–D. Calloporina sigillata Canu & Bassler, 1929, VNMN-0242. B. Colony. C. Autozooid with ooecium. D. Ancestrula (bottom right) and periancestrular zooids. Scale bars: A, 500 µm; B, 1 mm; C, 250 µm; D, 500 µm.
FIGURE 3 in Taxonomy and diversity of coelobite bryozoans from drift coral cobbles on Co To Island, northern Vietnam
FIGURE 3. Dibunostoma reversum (Harmer, 1926). A. Colony, showing autozooids, kenozooids (arrowhead), and autozooid (arrow) with orificial closure plate giving rise to overgrowth layer, VNMN-0213. B. Autozooids, showing shape of orifice, VNMN-0213. C. Overgrowth layer arising from autozooid with orificial closure plate, VNMN-0213. D. Interzooidal avicularium, one of two daughter zooids at column branch point, VNMN-0273. E. Autozooids, with one vicarious avicularium, VNMN- 0274. F. Kenozooids at colony margin, VNMN-0275. Scale bars: A, 1 mm; B, C, 500 µm; D, 200 µm; E, F, 250 µm.
FIGURE 11. Microporella dentilingua Tilbrook, 2006, A in Taxonomy and diversity of coelobite bryozoans from drift coral cobbles on Co To Island, northern Vietnam
FIGURE 11. Microporella dentilingua Tilbrook, 2006, A. Colony, VNMN-0243. B. Autozooids with and without ooecium, VNMN-0243. C. Enlargement showing orifice, VNMN-0243. D. Enlargement showing intact avicularium, VNMN-0276. E. Shape of avicularian mandible, VNMN-0246. F. Autozooids with weaker orificial denticulation and smaller, less-occluded ascopore, VNMN-0244. Scale bars: A, 1 mm; B, 150 µm; C–E, 100 µm; F, 250 µm.
FIGURE 6. A–D. Trypostega henrychaneyi Tilbrook, 2006 in Taxonomy and diversity of coelobite bryozoans from drift coral cobbles on Co To Island, northern Vietnam
FIGURE 6. A–D. Trypostega henrychaneyi Tilbrook, 2006, VNMN-0225. A. Autozooids and distal zooeciules. B. Zooid with ooecium (right). C. Enlargement showing orifice and zooeciule. D. Colony margin, showing zooeciule extending to basal surface. E, F. Exechonella similis Cáceres-Chamizo, Sanner, Tilbrook & Ostrovsky, 2017, VNMN-0226. E. Autozooids. F. Enlargement showing orifices. Scale bars: A, 200 µm; B, C, 50 µm; D, 100 µm; E, 500 µm; F, 150 µm.
FIGURE 5. A–C in Taxonomy and diversity of coelobite bryozoans from drift coral cobbles on Co To Island, northern Vietnam
FIGURE 5. A–C. Smittipora harmeriana (Canu & Bassler, 1929). A. Colony, VNMN-0223. B. Autozooids and interzooidal avicularia, with arrowhead indicating vestigial ooecium; VNMN-0223. C. Ancestrula (asterisk) and periancestrular zooids, along with Plesiocleidochasma porcellaniforme, VNMN-0256. D–F. Hippothoa sp. D. Parts of uniserial colony on bivalve shell, VNMN-0219. E. Autozooidal dilatation, showing cruciform branching and one proximolateral zooeciule, VNMN-0219. F. Autozooidal dilatation, showing orifice shape and slight frontal keel, VNMN-0217. Scale bars: A, 1 mm; B–D, 500 µm; E, F, 100 µm.
FIGURE 4. A, B in Taxonomy and diversity of coelobite bryozoans from drift coral cobbles on Co To Island, northern Vietnam
FIGURE 4. A, B. Cranosina coronata (Hincks, 1881), VNMN-0215. A. Part of colony. B. autozooids and avicularia. C–F. Antropora minor (Hincks, 1880). C. Young colony with ancestrula (asterisk), partly overgrown by the foraminiferan Planorbulina larvata (bottom) and forming stand-off with it (upper left), VNMN-0218. D. Autozooids and avicularia, VNMN-0217. E. Autozooids and avicularia, with left-center autozooid having vestigial ooecium, and several autozooids having smooth, raised prominence (gymnocystal papilla) at proximal end, VNMN-0217. F. Non-ooeciate autozooid (left-center), ooeciate autozooid (lower right), and vicarious avicularium (upper right), VNMN-0276. Scale bars: A, C, 1 mm; B, 500 µm; D, 300 µm; E, 150 µm; F, 200 µm.
FIGURE 14 in Taxonomy and diversity of coelobite bryozoans from drift coral cobbles on Co To Island, northern Vietnam
FIGURE 14. Plesiocleidochasma porcellaniforme Soule, Soule & Chaney, 1991. A. Colony, VNMN-0256. B. Autozooids at colony margin, VNMN-0258. C. Autozooids with and without ooecia near colony margin, VNMN-0257. D. Enlargement showing orifice shape, VNMN-0257. Scale bars: A, 1 mm; B, C, 250 µm; D, 150 µm.
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