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Figure 2 in Revising the definition of the crustacean seta and setal classification systems based on examinations of the mouthpart setae of seven species of decapods

Figure 2. Types of projections found on the general cuticle. A, type I projection, a seta, is an elongate circular projection, which is articulated with the general cuticle (arrow). It is the most common type of projection. B, type II projection, a seta, from maxilla 1 of Pagurus bernhardus with a more or less direct transition into the general cuticle. In the other species articulated setae are situated in the same place (compare with Fig. 11A). They may have small outgrowths (arrows). C, type III projections, denticles, from maxilliped 1 of Panulirus argus. Arrows indicate direct transition into general cuticle without an articulation. D, type IV projections, setules, from the paragnath of Stenopus hispidus. Arrows indicate serration and arrowheads indicate articulation with the general cuticle. Note the flattened shape at the base.

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Figure 11. Cuspidate setae. A in Revising the definition of the crustacean seta and setal classification systems based on examinations of the mouthpart setae of seven species of decapods

Figure 11. Cuspidate setae. A, Typical cuspidate setae from the basis of maxilla 1 of Cherax quadricarinatus. Note clear articulation with general cuticle (arrowheads) and compare with Figure 2B. B, cuspidate seta with teeth-like outgrowths in two rows (arrows). C, subterminal pore (arrow) from cuspidate seta with debris in pore. D, cuspidate setae on the dactylus of maxilliped 2 of Carcinus maenas. One is lacking articulation (arrow). E, cuspidate setae on the endopod of maxilla 2 of Penaeus monodon. Abbreviation: Cu, cuspidate setae.

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Figure 6. Plumose setae. A in Revising the definition of the crustacean seta and setal classification systems based on examinations of the mouthpart setae of seven species of decapods

Figure 6. Plumose setae. A, Typical plumose setae from the exopod of maxilliped 2 of Panulirus argus. Arrows indicate supracuticular articulations. B, basal part of setule. No articulation is seen (arrows). C, setule (inserted in a groove) from plumose seta. Note absence of serration. D, plumose seta with pseudo articulations (arrows) from an exopod flagellum. E, plumose setae on the exopod flagellum of maxilliped 2 of Pan. argus. Abbreviations: Endo, endopod; Exo fla, flagellum of exopod; Pl, plumose setae.

Figure 6 in On the Mysid Crustacean Genus Deltamysis (Mysidae: Heteromysinae), with a New Species and a New Record from Australia

Figure 6. Deltamysis lowryi sp. nov., holotype, male, 4 mm, New South Wales, Yamba, AM P.98699. (A) habitus, lateral; (B) head, dorsal; (C) posterior part of body with telson and uropods, dorsal; (D) telson posterior part; (E) posteroventral margin of abdominal segment 6, and uropodal protopod; (F) antennular peduncle distal part, dorsal; (G) antennal peduncle and scale, ventral view. Scales (mm): A = 1; B, C, G = 0.5; D–F = 0.25.

Figure 3 in On the Mysid Crustacean Genus Deltamysis (Mysidae: Heteromysinae), with a New Species and a New Record from Australia

Figure 3. Deltamysis holmquistae Bowman & Orsi, 1992, female, 4 mm, New South Wales, Yamba, AM P.98703: (A) antennular peduncle distal part, dorsal; (B) antennal peduncle and scale, ventral view; (C) mandibular palp, posterior; (D) labrum, ventral; (E) maxilla 2, posterior; (F) pleopod 3, anterior; (G) pleopod 5, anterior. Scales (mm): A, B, F, G = 0.5; C–E = 0.25.

Figure 2 in On the Mysid Crustacean Genus Deltamysis (Mysidae: Heteromysinae), with a New Species and a New Record from Australia

Figure 2. Deltamysis holmquistae Bowman & Orsi, 1992, female, 4 mm, New South Wales, Yamba, AM P.98703: (A) habitus, lateral; (B) head, dorsal; (C) posterior part of body with telson and uropods, dorsal; (D) telson posterior part; (E) posterolateral lobe of abdominal segment 6; (F) posteroventral margin of abdominal segment 6, and uropodal protopod. Scales (mm): A = 1; B, C, E = 0.5; D, F = 0.25.

Figure 5 in On the Mysid Crustacean Genus Deltamysis (Mysidae: Heteromysinae), with a New Species and a New Record from Australia

Figure 5. Deltamysis holmquistae Bowman & Orsi, 1992, female, 4 mm, New South Wales, Yamba, AM P.98703: (A) pereopod 2 endopod, anterior; (B) pereopod 3 endopod, anterior; (C) pereopod 4, anterior; (D) pereopod 5 endopod, anterior; (E) pereopod 6, anterior; (F) pereopod 6 basis distal part, anterior. Scales (mm): A–E = 0.5; F = 0.25.

Figure 8 in On the Mysid Crustacean Genus Deltamysis (Mysidae: Heteromysinae), with a New Species and a New Record from Australia

Figure 8. Deltamysis lowryi sp. nov., holotype, male, 4 mm, New South Wales, Yamba, AM P.98699: (A) maxilla 2, posterior; (B) maxilliped 2 endopod, anterior; (C) pereopod 1 endopod, posterior; (D) pereopod 1 distal part, posterior; (E) pereopod 4 endopod, anterior; (F) pereopod 6, posterior; (G) pereopod 1 distal part, posterior. Scales (mm): A, D, G = 0.25; B, C, E, F = 0.5.

Figure 7 in On the Mysid Crustacean Genus Deltamysis (Mysidae: Heteromysinae), with a New Species and a New Record from Australia

Figure 7. Deltamysis lowryi sp. nov., holotype, male, 4 mm, New South Wales, Yamba, AM P.98699: (A) mandibular palp, anterior; (B) mandibles, ventral; (C) labrum, ventral; (D) maxilla 1 outer ramus, posterior; (E) maxilliped 1, anterior; (F) pleopod 2, anterior; (G) pleopod 4, anterior; (H) pleopod 5, anterior. Scales (mm): A–D, F–H = 0.25; E = 0.5.

Figure 3 in Crustaceans Associated with Cold Water Corals: A Comparison of the North Atlantic and North Pacific Octocoral Assemblages

Figure 3. Photos showing some of the amphipod species found associated with deep-sea gorgonians, of which many where undescribed species belonging to the pleustid group. (A, B) the undescribed pleustids, Chromopleustes sp. A_J2099 and sp. B_J2103 respectively; (C) Neopleustes sp. C_J2098, all associated with deep–sea gorgonians occurring below 1000 m depth (e.g., Acanthogorgia). (D) Neopleustes sp. D_J2103 occurred on octocorals of the family Plexauridae at 400 m. (E) Neupleustes eucanthoides Gurjanova, 1972 was also from an unidentified species of Acanthogorgia. (F) the extremely well armoured Uschakoviella echinophora belonging to the family Epimeriidae was observed associated with the coral Plumarella collected at 100 m.

Figure 2 in Crustaceans Associated with Cold Water Corals: A Comparison of the North Atlantic and North Pacific Octocoral Assemblages

Figure 2. ROV dive locations along the Aleutian Ridge, central Aleutian Islands, Alaska, during a cruise in 2004.

Figure 1 in Crustaceans Associated with Cold Water Corals: A Comparison of the North Atlantic and North Pacific Octocoral Assemblages

Figure 1. Remotely operated vehicle (ROV) dive locations in the New England and Corner Rise seamount groups, NW Atlantic, during cruises in 2003–2005.

Fig. 3 in Exceptionally well-preserved Orsten-type phosphatocopid crustaceans from the Cambrian of Poland

Fig. 3. Phosphatocopid crustacean Cyclotron angelini (Linnarsson, 1875), ZPAL Cr.11/ph060 from the Olenus Biozone, Furongian, Dębki 2 borehole, northern Poland. Stereo-pair in ventro-lateral view side (A1); ventral view exhibiting pairs of antennae and mandibles, first right post-mandibular limb and remains of second and third post-mandibular limbs, putative gut tube indicated by arrow, anterior to the left (A2); pairs of antennae in anterior view, mandibles with reduced exopods partly visible (A3); BSE image highlighting proximal part of the left antenna with ring-like structure at its base (arrow) A4); BSE image depicting proximal part of the right antenna in anterior view, with basal ring-like cuticular plate (arrow) (A5); left mandible and antenna in postero-lateral view (A6); left antenna and mandible in ventral view (A7). Abbreviations: an, antenna; en, endopod; ex-md, exopod of the mandible; lst, limb stem; md, mandible; st, sternum.

Fig. 2 in Exceptionally well-preserved Orsten-type phosphatocopid crustaceans from the Cambrian of Poland

Fig. 2. Terminology of limb morphology of Cyclotron angelini (Linnarson, 1875). A. Antenna. B. Mandibula. C. 1st post-mandibular limb. D. Terminal limb.

Fig. 6 in Exceptionally well-preserved Orsten-type phosphatocopid crustaceans from the Cambrian of Poland

Fig. 6. Phosphatocopid crustacean Cyclotron angelini (Linnarsson, 1875), ZPAL Cr.11/ph060 from the Olenus Biozone, Furongian, Dębki 2 borehole, northern Poland. Stereo-pair in postero-lateral view with 7th limb (A1); detailed view of distal part of 7th limb in poster-ventral view, exhibiting membranous wall and setulose setae of the exopod, note tiny endopod in postero-ventral view (A2); details of 7th limb in posterior view, note arthrodial membrane in distal part (A3); posterior part of the body proper with possible anus (arrow) (A4); detailed view of sternum surface covered with fine setules (A5). Abbreviations: en, endopod; ex, exopod.

Fig. 5 in Exceptionally well-preserved Orsten-type phosphatocopid crustaceans from the Cambrian of Poland

Fig. 5. Phosphatocopid crustacean Cyclotron angelini (Linnarsson, 1875), ZPAL Cr.11/ph060 from the Olenus Biozone, Furongian, Dębki 2 borehole, northern Poland. First right post-mandibular limb in postero-median view (A1); first left post-mandibular limb in anterior view, note large paddle-shaped exopod with few distal annuli, note arthrodial membrane between endopodal segments (A2); detailed view of A2 concentrating on two-divided endopod and arthrodial membrane between endopodal segments (A3, A4); lateral basipodal margin of the second right post-mandibular limb, bearing three setae (arrows) (A5); partly preserved second left post-mandibular limb in posterior view with three setae (arrows) on lateral margin of basipod in posterior view (A6); and anterior view indicating place left by proximal endite broken off (arrow) (A7); detailed view of A1, with setation and glandular openings (arrows) on posterior side of basipodal endite (A8). Abbreviations: am, arthrodial membrane; ba, basipod; en, endopod; ex, exopod; pe, proximal endite.

Fig. 7 in Exceptionally well-preserved Orsten-type phosphatocopid crustaceans from the Cambrian of Poland

Fig. 7. Phosphatocopid crustacean Cyclotron sp. from Olenus Biozone, Furongian, Dębki 2 borehole, northern Poland. A. ZPAL Cr.11/ph095. Internal view of right valve depicting shell, inner lamella and partly preserved cuticle with apodemes in dorsal part, anterior to the right (A1); detailed view of A1 exhibiting apodemes (numbers of supposed limbs: antenna (2nd), mandible (3rd) and three post-mandibular limbs (4th–6th) and structures interpreted as remains of muscles of hypostome/labrum complex; anterior is up, two nodes, possibly representing muscle scars (arrows) (A2); enlarged posterior part of valve with two apodemes (4th and 5th) and two nodes, possibly representing muscle scars (arrows) in oblique dorso-posterior view, anterior to the right (A3); enlarged proximal part of apodeme (2nd) with muscle fibers attached inside (A4); detailed view of apodeme (4th) with attached putative muscle (A5); detailed view of supposed right proximal part of hypostome-labrum structures, anterior is up (A6). B. ZPAL Cr.11/ph102. Left valve depicting shield, internal lamella cuticle and body cuticle wall with preserved apodemes (B1); detailed view of B1 exhibiting apodemes (2nd–6th), two nodes, possibly representing muscle scars (arrows) (B2); apodemes in oblique latero-ventral view (B3); detailed view of putative muscle fibers within apodeme (4th) (B4); apodeme (4th) in internal view showing putative muscle attached in proximal depression (B5); detailed view depicting proximal part of apodeme (5th) with putative muscle fibers (B6); apodeme (5th) in median view (B7); apodeme (4th) in posterior view (B8); detailed view of supposed proximal hypostome-labrum structures (arrow), in dorsal view (B9). Abbreviations: in, inner lamella cuticle; lst, limb stem; sh, shield.

Fig. 4 in Exceptionally well-preserved Orsten-type phosphatocopid crustaceans from the Cambrian of Poland

Fig. 4. Phosphatocopid crustacean Cyclotron angelini (Linnarsson, 1875), ZPAL Cr.11/ph060 from the Olenus Biozone, Furongian, Dębki 2 borehole, northern Poland. Left mandible in posterior view, note the empty space left by the setose endite ("basipodal endite") broken off between gnathobase of coxa and endopod (A1); pairs of antennae and mandibles in oblique ventral view (A2); proximal part of right antenna in anterior view; note coxa of mandible with the circular cuticular structure around the exopod (arrow) (A3); margin of left coxal gnathobase with tuft-like setae (A4); distal part of right mandible with part of coxa, setose endite ("basipodal endite") and two-divided endopod (arrow) (A5); distal part of left mandible with preserved coxa and endopod, note sternum with left paragnath; setose endite ("basipodal endite") is not preserved (A6). Abbreviations: an, antenna; co, coxa; en, endopod; ex, exopod; gn, gnathobase; md, mandible; se, setose endite; st, sternum.

Fig. 1. A in Exceptionally well-preserved Orsten-type phosphatocopid crustaceans from the Cambrian of Poland

Fig. 1. A. Geographic location of study area in northern Poland, Dębki (asterisk). B. Stratigraphic column showing location of the sample with Phosphatocopida.

Fig. 8 in Exceptionally well-preserved Orsten-type phosphatocopid crustaceans from the Cambrian of Poland

Fig. 8. Examples of phosphatocopids with soft parts preserved from the Olenus Biozone, Furongian, Dębki 2 borehole, northern Poland. A. ZPAL Cr.11/ ph414, head larvae stage of Hesslandona unisulcata Müller, 1982, ventral is up; BSE image, lateral view of right side exhibiting antenna, mandible and first post-mandibular limb, small triangle-like cuticular structure at base of antenna (arrow) (A1); BSE image, detailed view of proximal part of antenna, small triangle-like cuticular structure at base of antenna (arrow), and mandible with coxa and basipod, note poorly visible border line between coxa and basipod in lateral part of limb (A2); antero-lateral view depicting antenna (arrow), mandible and first post-mandibular limb, distal part of labrum partly visible (A3); BSE image, exhibiting first post-mandibular limb, proximal endite masked by matrix (note the elongate depression on the lateral part of basipod and exopod inserting on its distal part) (A4). B. ZPAL Cr.11/ph222, an undetermined phosphatocopid; antero-lateral view of the right side depicting heart-like hypostome, inserting place of antennula (arrow); distal parts of antenna and mandible partly broken off (B1); BSE image, detailed view of proximal parts of antenna, note swollen proximal area of limb stem possibly representing lateral part of coxa (white arrow), and possible basipod with arising exopod on its distal part; mandible, note possible remains of border line (white arrow) between coxa and strongly reduced basipod; inserting place of antennula with preserved arthrodial membrane (black arrow) (B2); detailed view of proximal part of antenna exhibiting swollen part (arrow) and arthrodial membrane (B3); postero-lateral view depicting first left post-mandibular limb with relatively large setose proximal endite, basipod with inserting place of exopod developed as long depression and with partly preserved exopod and partly preserved endopod (B4). C. ZPAL Cr.11/ph202, an undetermined phosphatocopid in anterior view, representing early growth stage depicting hypostome-labrum with median eyes, pair of antennulae (arrow), and partly preserved antennae. D. ZPAL Cr.11/ph498, an undetermined phosphatocopid in view from behind, representing early growth stage exhibiting labrum, sternum, mandibles consisting of separate coxa and basipod, and right 1st post-mandibular limb. Abbreviations: atl, antennula; an, antenna; co, coxa; ba, basipod; en, endopod; ex, exopod; hp, hypostome, lb, labrum; lst, limb stem; me, median eye; md, mandible; pe, proximal endite; st, sternum.