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Figure 1 in New endemic species of freshwater crayfish Parastacus Huxley, 1879 (Crustacea: Decapoda: Parastacidae) from the Atlantic forest in southern Brazil
Figure 1. Parastacus buckupi sp. nov. A, habitus dorsal view (holotype); B, cephalon dorsal view (holotype); C, cephalon lateral view (holotype); D, female pleon (paratype 4); E, male first to third pleonal pleura (holotype); F, female first to third pleonal pleura (paratype 4); G, tailfan dorsal view (holotype). Scale bars: A – 1 cm; B–D, G – 5 mm; E, F – 3.33mm.
Figure 3. from Euastacus morgani sp. n., a new spiny crayfish (Crustacea, Decapoda, Parastacidae) from the highland rainforests of eastern New South Wales, Australia - ZooKeys 85: 17-26 (11 March 2011) https://doi.org/10.3897/zookeys.85.1237
Figure 3. - Location of the type locality (black square) on the northern margin of Bindarri National Park, in central eastern Australia.
Figure 2. from Euastacus morgani sp. n., a new spiny crayfish (Crustacea, Decapoda, Parastacidae) from the highland rainforests of eastern New South Wales, Australia - ZooKeys 85: 17-26 (11 March 2011) https://doi.org/10.3897/zookeys.85.1237
Figure 2. - Euastacus morgani sp. n. Dorsal view of body A and cheliped B, holotype specimen, AM P.84263. Dorsal view of antennal squame C, lateral view of third maxilliped D and ventral view of left hand side of cephalon showing interantennal scale E, specimen ACP 1103. Scale bars = 5 mm.
Crayfish classification
<p>This dataset is composed 2486 images. The labels are Crayfish, Crayfish Adult and Crayfish Juvenile</p>
FIG. 13 in Crayfishes from the Jehol biota
FIG. 13. — Two types of preservation: A, B, NIGP-126354, a possible fossil corpse (A) as shown by the presence of an infilled proctodeum (B); C, fossilized moult NIGP-Shen-RT132 (C) as shown by the disconnection of the cephalothorax shield, thinness of the exoskeleton and lack of fossilized soft-parts. Photographs: D. Audo. Scale bars: 10 mm.
FIG. 7 in Crayfishes from the Jehol biota
FIG. 7. — Palaeocambarus licenti (Van Straelen, 1928), specimen NIGP-175159 with well-preserved ornamentation of first pereiopod (thoracopod 4). Photograph: D.-Y. Huang. Scale bars: 20 mm.
FIG. 3 in Crayfishes from the Jehol biota
FIG. 3. — Ischial hooks in P. licenti: A-D, on specimen NIGP-126337 (holotype of Cricoidoscelosus aethus), ventral view in cross-polarized light (A) and interpretative line-drawing (B); C, D, detailed view of the base of P2-P4 (th5-th7) (C), and interpretative line drawing (D) – note that C and D are aligned horizontally for convenience; E, F, on specimen NIGP-Shen-22, detail of the ischium of P4 (th7). Abbreviations: a1, antennula; a2, antenna; ba, basipod; cx, coxa; epi, epistome; ex, uropodal exopod; go, male gonopod; isc, ischium; md, mandible; me, merus; mxp3, maxilliped 3 (thoracopod 3); P1-P5, pereiopods 1-5 (thoracopod 4-8); pl3, pleopod 3; r, rostrum; s2, pleonite 2; sc, scaphocerite. Photographs: A, D. Audo; C, E, D.-Y. Huang. Scale bars: A, B, 20 mm; C-F, 2 mm.
FIG. 11 in Crayfishes from the Jehol biota
FIG. 11. — Scientific reconstructions in lateral view of Palaeastacus licenti. Drawing: C. Letenneur (UMR 7207 CR2P).
FIG. 12 in Crayfishes from the Jehol biota
FIG. 12. — Eyes and gastroliths: detail of the eye of spec11 (A) and specimen with gastroliths NIGP-126353, whole specimen in dorsal view, in cross-polarized light (B) and close-up of the gastroliths imprint, in cross-polarized light (C). Photographs: D. Audo. Scale bars: A, 1 mm; B, 20 mm; C, 10 mm.
FIG. 6 in Crayfishes from the Jehol biota
FIG. 6. — Palaeocambarus licenti (Van Straelen, 1928): three well preserved specimens NIGP-Shen-1, both in left-lateral view, in cross-polarized light (A), interpretative line drawing (B) and close-up of the cephalic area of one of the right crayfish in NIGP-Shen-1 (C), visualisation in Meshlab of the inverted surface volume of NIGP-Shen-GM1 from the photogrammetric model, with Minnaert shader (D). Abbreviations: a, branchiocardiac groove; b, antennal groove; d, gastro-orbital groove; dt, digestive tract; e1e, cervical groove; e1e (os), cervical groove (opposite side); ex, uropodal exopod; o, eye; P1, pereiopod 1; po (d), postorbital carina (dorsal part); po (v), postorbital carina (ventral part); pr, postrostral carina; r1, acumen (distal part) of rostrum; r2, proximal part of rostrum; s1-s6, pleonites 1-6; sc, scaphocerite; su, subdorsal carina; t, telson. Photograph and photogrammetric model: D. Audo. Scale bars: A, B, 20 mm; D, 10 mm.
FIG. 2 in Crayfishes from the Jehol biota
FIG. 2. — Comparison of epistomes in fossil and extant crayfishes: A, B, epistome of P. licenti (NIGP-Shen-26), photo (A) and interpretative line-drawing (B); C, epistome of P. licenti (NIGP-Shen-40); D, epistome of a female Cambaroides dauricus (Pallas, 1972) (MNHN-IU-2022-4077, extant, Mandchuria); E, Cambarus bartonii (Fabricius, 1798) (MNHN-IU-2022-4074, extant, Philadelphia, United States); F, Astacus astacus (Linnaeus, 1758) (MNHN-IU-2022-4069, extant, Nissi, Greece). Photos of fossil specimens in cross-polarized light. Abbreviations: a1, antennula; a2.ba, antennal basipodite; a2.cx, antennal coxa; epi, epistome; uo, urinary orifice (nephropore). Photographs: D. Audo. Scale bars: 2 mm.
FIG. 5 in Crayfishes from the Jehol biota
FIG. 5. — Neotype of Palaeocambarus licenti (Van Straelen, 1928), specimen NIGP-126342: ventral view in cross-polarized light (A) and interpretative line-drawing (B). Abbreviations: a2, antenna; av?, potential annulus ventralis; dt; digestive tract; epi, epistome; ex, uropodal exopod; mxp3, maxilliped 3 (thoracopod 3); o, eye; P1-P5, pereiopods 1-5 (th4-th8); r, rostrum; s2-s5, pleonites 2-5; sc, scaphocerite. Photograph: D. Audo. Scale bars: 20 mm.
FIG. 1 in Crayfishes from the Jehol biota
FIG. 1. — Pleopods of different decapod crustaceans, fossil and extant: A, B, Palaeocambarus licenti (Van Straelen, 1928b) seen in ventral view (A, holotype of Cricoidoscelosus aethus Taylor, 1999, NIGP-126337) and lateral view (B, specimen NIGP-Shen-2), both from the Early Cretaceous of China; C, pleopod 4 of a female Cambaroides dauricus (MNHN-IU-2022-4077, extant, Mandchuria); D, Austropotamobius llopisi (Vía, 1971) (female? – specimen MUPA-LH-14011), from the Early Cretaceous of Spain; E, Palaeobenthesicymus libanensis (Brocchi, 1875) (specimen MNHN.F.A30607) from the Santonian of Lebanon; F, female Polycheles typhlops Heller, 1862 (MNHN-IU-2022-4080, extant, New Caledonia). Photographs: D. Audo. Scale bars: A, C, 1 mm; B, D, E, F, 5 mm.
FIG. 10 in Crayfishes from the Jehol biota
FIG. 10. — Scientific reconstructions in dorsal view of Palaeastacus licenti (Van Straelen, 1928b). Drawing: C. Letenneur (UMR 7207 CR2P).
FIG. 8 in Crayfishes from the Jehol biota
FIG. 8. — Syntype of Astacus spinirostrius (synonym of P. licenti), ventral view in cross-polarized light (A) and interpretative line-drawing (B), Abbreviations: a1, antennula: a2, antenna; en, uropodal endopod; epi, epistome; ex, uropodal exopod; go, male gonopod; md, mandible; mxp3, maxilliped 3 (th. 3); P1-P5, pereiopods 1-5 (th. 4-8); s2-s6, pleonites 2-6; sc, scaphocerite; t, telson. Photograph: D. Audo. Scale bars: 20 mm.
APPENDIX 4 in Crayfishes from the Jehol biota
APPENDIX 4. — Specimens without registration numbers used in the study. Continued in next t wo figures. Scale bars: 10 mm.
APPENDIX 6 in Crayfishes from the Jehol biota
APPENDIX 6. — Specimens without registration numbers used in the study, continued from previo us figures. Scale bars: 10 mm.
APPENDIX 3. — 3D in Crayfishes from the Jehol biota
APPENDIX 3. — 3D model obtained by photogrammetry of specimen NIGP-Shen-GM1. To visualize the model, extract all content of the archive in a folder, then open the file "NIGP_GM1.obj" with the 3D software of your choice, for instance Meshlab. https://doi.org/10.5852/geodiversitas2023v45a24_s3
APPENDIX 5 in Crayfishes from the Jehol biota
APPENDIX 5. — Specimens without registration numbers used in the study, continued from previo us figure. Scale bars: 10 mm.
Figure 4 in A new freshwater crayfish species of Parastacus Huxley, 1879 (Malacostraca: Decapoda: Parastacidae) from southern Brazil
Figure 4. Distribution of Parastacus longidactylus sp. n. in Amaral Ferrador, state of Rio Grande do Sul (RS), Brazil.
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