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Blaschka Glass Model of a Syllid Worm

Micro CT scan of a Blaschka model of a Syllid Worm, Autolytus Cornutus (developmental stage 1) from the D'Arcy Thompson Zoology Museum at the University of Dundee. DUNUC 9327 - glass model of a polychaete syllid worm, thought to be Autolytus cornutus (= Proceraea cornuta) developmental stage. Length=9cm. D'Arcy Thompson acquired a set of Blaschka's exquistely delicate glass models in 1888. In Growth and Form, D'Arcy refers repeatedly to the art of the glass-blower, perhaps thinking of these very models. Scanned with a Nikon XT H 225ST micro CT scanner. The resulting file is exported as an stl. and imported in to Zbrush. We'd love to hear from you if you download or print our models, especially if you use them in education and outreach. Source: Objaverse 1.0 / Sketchfab

Fig. 2 in Description of a new syllid species as a model for evolutionary research of reproduction and regeneration in annelids

Fig. 2 SEM images of Typosyllis antoni n. sp. a Anterior end, dorsal view. b Anterior end, ventral view. c Detail of anterior end, dorsal view. d Anterior end, lateral view. e Midbody segments, ventral view. f Midbody parapodia, lateral view

Fig. 6 in Description of a new syllid species as a model for evolutionary research of reproduction and regeneration in annelids

Fig. 6 Confocal maximum projections of Typosyllis antoni n. sp. Phalloidin–rhodamine (gray) and serotonin labeling (red) of cross sections (a–c) and the proventricle (d, e) of adult specimens. Dorsal is up in a–c. Anterior is up in d and right in e. a Cross section of the midbody region, the prominent longitudinal muscle bundles are colored in yellow. The insert shows a detailed view of the parapodium, and major muscle bundles are color coded— parapodial retractor muscle in brown, acicular protractor muscle in green, acicular flexor muscle in violet, chaetal flexor muscle in pink, cirral muscle bundle in blue. b Cross section showing the distinct proventricle (pr) filling almost the whole body cavity. The longitudinal muscle bundles are color coded in yellow. c The proventricle (pr) and the ventral nerve cord (vn) show distinct serotonergic immunoreactivity. d The separated proventricle (pr) exhibits radial honeycomb-like muscle bundles (rb, dotted circle) and prominent circular muscle fibers (cf) surrounding the whole structure. e The separated proventricle (pr) is represented by an anterior circular muscle bundle (am) and suspending muscles (sm) terminating at the border between the anterior circular muscle bundle (am) and the radial muscle bundles (rb). am anterior circular muscle bundle, cf circular muscle fiber, dc dorsal cirrus, dv dorsoventral muscle fibers, in intestine, mm median muscle bundle, pa parapodium, pr proventricle, rb radial muscle bundle, sm suspending muscle fiber, vn ventral nerve cord. Scale bar=100 μm (color figure online)

Fig. 10 in Description of a new syllid species as a model for evolutionary research of reproduction and regeneration in annelids

Fig. 10 Most parsimonius tree. Jacknife support values above nodes. Syllis and Typosyllis species as they were described. Drawings from up to down: chaetae of Syllis benbeliahue (after Aguado and San Martín 2006),

Fig. 8 in Description of a new syllid species as a model for evolutionary research of reproduction and regeneration in annelids

Fig. 8 Light microscopy pictures of regenerating specimens of Typosyllis antoni n. sp. All pictures are dorsal views except d2 (ventral view). a, c, e anterior end, b, d1, d2, f posterior end. The dotted white line indicates the site of dissection. a At 4 days after dissection, the re-developing prostomium (ps), as well as the first two segments (1, 2) are visible (in other specimens also three segments were observed). The prostomium shows palps (pl), antenna (la, ma) and two pairs of eyes (ey). Dorsal tentacular cirri (dt) of the first segment occur. b After 4 days, the pygidium (py) with the anal cirri (ac) and the median papillae (mp) are regenerated. c At 6 days, all in a described anterior structures have grown. Pharynx (ph) is re-developed, connecting the mouth opening (not visible) with the

Fig. 4 in Description of a new syllid species as a model for evolutionary research of reproduction and regeneration in annelids

Fig. 4 Light microscopy pictures of Typosyllis antoni n. sp. a Anterior chaetae, most dorsal ones and medially located in the fascicle. b Anterior chaetae, most dorsal ones. c Anterior chaetae, medially and most ventral ones. d. Anterior aciculae. e Midbody chaetae, most dorsal ones and medially located in the fascicle. f Midbody chaeta, most dorsal one. g Dorsal simple chaeta, posterior parapodium. h Ventral simple chaeta,

Figure 10 in Branching out: a remarkable new branching syllid (Annelida) living in a Petrosia sponge (Porifera: Demospongiae)

Figure 10. Strict consensus tree of the combined molecular data set analysed through maximum parsimony. Numbers above nodes represent the jackknife support values; numbers below nodes denote the posterior probabilities in the Bayesian inference analysis.

Figure 5 in Branching out: a remarkable new branching syllid (Annelida) living in a Petrosia sponge (Porifera: Demospongiae)

Figure 5. Ramisyllis multicaudata gen. et sp. nov. A, holotype, ventral view of anterior region showing asymmetrical dorsal cirri and first branch (upper); B, non-type from white form of Petrosia sp., mid-posterior body region showing asymmetrical dorsal cirri; C, non-type from purple form of Petrosia sp., posterior (external) body region showing alternation of enlarged and slender dorsal cirri and pygidium. Scale bars: 1.0 mm.

Figure 1 in Branching out: a remarkable new branching syllid (Annelida) living in a Petrosia sponge (Porifera: Demospongiae)

Figure 1. Ramisyllis multicaudata gen. et sp. nov., paratype NTM W23790 showing two orders of branching (branches all incomplete). Dc, dorsal cirrus; ph, pharynx; pr, proventricle; g, gut. Scale bar: 3.0 mm.

Figure 8 in Branching out: a remarkable new branching syllid (Annelida) living in a Petrosia sponge (Porifera: Demospongiae)

Figure 8. Ramisyllis multicaudata gen. et sp. nov. A, chaetae from segment 8; B, chaeta from stolon. Scale bars: A, 5.0 Mm; B, 3.0 Mm.

Figure 7 in Branching out: a remarkable new branching syllid (Annelida) living in a Petrosia sponge (Porifera: Demospongiae)

Figure 7. Ramisyllis multicaudata gen. et sp. nov. Non-type, lateral view of posterior segments showing prominent arrays of pits and perforated plates. Scale bar: 50 Mm.

Figure 4 in Branching out: a remarkable new branching syllid (Annelida) living in a Petrosia sponge (Porifera: Demospongiae)

Figure 4. Ramisyllis multicaudata gen. et sp. nov. unbranched juvenile (NTM W23753), ventral view, Nomarski optics, showing presence of mid-dorsal tooth and anterior position of pharynx; t, tooth. Scale bar: 0.1 mm.

Figure 2 in Branching out: a remarkable new branching syllid (Annelida) living in a Petrosia sponge (Porifera: Demospongiae)

Figure 2. Ramisyllis multicaudata gen. et sp. nov. A, holotype, anterior end; B, non-type, mid-posterior body, showing terminal branches and developing female stolon – the arrow indicates the direction of the head; C, smallest individual (NTM W23750) showing branching, ventral view; fs, female stolon; ds, developing stolon; tb, terminal branch. Scale bars: A, 2.0 mm (upper), 3.0 mm (lower); B, 10 mm; C, 0.5 mm.

Figure 11 in Branching out: a remarkable new branching syllid (Annelida) living in a Petrosia sponge (Porifera: Demospongiae)

Figure 11. Living sponge, Petrosia sp. (purple form) photographed in the lab, with posterior ends of R. multicaudata gen. et sp. nov. emerging from surface pores and moving actively on the sponge surface. The sponge is about 90 mm in diameter.

Figure 3 in Branching out: a remarkable new branching syllid (Annelida) living in a Petrosia sponge (Porifera: Demospongiae)

Figure 3. Ramisyllis multicaudata gen. et sp. nov. holotype, SEM anterior end. A, dorsal view; B, ventral view; at, antenna; p, palp; tc, tentacular cirrus; vc, ventral cirrus.

FIGURE 8 in Another piece for the syllid puzzle: A new species from Japan and its mitochondrial genome reveal the enigmatic Clavisyllis (Phyllodocida: Syllidae) as a member of Eusyllinae

FIGURE 8. SEM pictures of paratype 3. A, B, D. chaetae of anterior segments; C. parapodium of anterior segment (not modified and without natatory chaetae).

FIGURE 7 in Another piece for the syllid puzzle: A new species from Japan and its mitochondrial genome reveal the enigmatic Clavisyllis (Phyllodocida: Syllidae) as a member of Eusyllinae

FIGURE 7. SEM pictures of paratype 3. A. modified notopodia with natatory chaeta and dorsal cirri; B. dorsal cirri; C. anterior half, complete lateral view; D. posterior half, lateral view; E. body surface with bundles of cilia; F. posterior end.

FIGURE 6. A in Another piece for the syllid puzzle: A new species from Japan and its mitochondrial genome reveal the enigmatic Clavisyllis (Phyllodocida: Syllidae) as a member of Eusyllinae

FIGURE 6. A. Drawing of the anterior end of the holotype with indicated structures; B. SEM picture of the anterior end of paratype 3. Highlighted structures: orange—nuchal extensions, green—lateral projections, violet—palps, blue—papillae, yellow—antennophores; C. Midbody parapodium, anterior view; D. Midbody chaetae. Scales C: 100 um, D. 20 um.

FIGURE 1 in Another piece for the syllid puzzle: A new species from Japan and its mitochondrial genome reveal the enigmatic Clavisyllis (Phyllodocida: Syllidae) as a member of Eusyllinae

FIGURE 1. Phylogenetic maximum likelihood tree of Syllidae based on the concatenated dataset (genes 18S, 16S, COI). Bootstrap support (B) values are shown next to the nodes.

FIGURE 4 in Another piece for the syllid puzzle: A new species from Japan and its mitochondrial genome reveal the enigmatic Clavisyllis (Phyllodocida: Syllidae) as a member of Eusyllinae

FIGURE 4. SEM pictures of paratype 3. A. anterior end, dorsal view; B. nuchal organs; C. anterior nuchal extensions; D. anterior end.