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1,913 results for “morphological characters”
Fig. 3 in Piggyback whorls: A new theoretical morphologic model reveals constructional linkages among morphological characters in ammonoids
Fig. 3. Different shapes of succeeding whorl (gray area) piling up on the hemispherical preceding whorl with same Li, l, and A values.
Fig. 2 in Piggyback whorls: A new theoretical morphologic model reveals constructional linkages among morphological characters in ammonoids
Fig. 2. Schematic figure of a cross section of the ammonoid shell showing how to define parameters of the piggyback whorls model. The enlarging rate of the whorl periphery (E) is defined as the ratio of the total perimeter of the newly added whorl section (Li) to that of preceding whorl (Li–1). The proportion of the dorsal whorl (R) is given by the ratio of the circumferential length along the dorsal wall (l) with respect to Li. The shape of the whorl section (S) is represented by the ratio of breadth (B) and height (H) of the whorl.
Fig. 1 in Piggyback whorls: A new theoretical morphologic model reveals constructional linkages among morphological characters in ammonoids
Fig. 1. Radial cross sections of ammonoids to illustrate allometric growth. A. Beloceras sp., Devonian; Erfoud, Morocco. B. Phylloceras consanguineum Gemmellaro, 1876, Jurassic; Sakaraha, Madagascar. C. Meekoceras gracilitatis White, 1879, Triassic; Crittenden Spring, Nevada. D. Girtyoceras meslerianum (Girty, 1909), Carboniferous; Jackforth Creek, Oklahoma.
Fig. 13 in Piggyback whorls: A new theoretical morphologic model reveals constructional linkages among morphological characters in ammonoids
Fig. 13. Results of same computer simulations as shown in Fig. 11 with an ornamented whorl shape. In order to produce an ornamented closed curve, the following parametric equations were used: x = 0.5Bcoso, y = 0.5H(sino + 0.3|sin4o|Q), where Q = H/B/5 if o Ṥ π, while Q = 5B/H if o> π. Note that simulated S values tend to be large as compared with Fig. 11F.
Linked collectors and determiners for: Revision of the genus Dinotoperla Tillyard, 1921 (Plecoptera: Gripopterygidae) using morphological characters and molecular data: Establishes two new genera, three new species and updates the larval taxonomy.
Natural history specimen data linked to collectors and determiners held within, "Revision of the genus Dinotoperla Tillyard, 1921 (Plecoptera: Gripopterygidae) using morphological characters and molecular data: Establishes two new genera, three new species and updates the larval taxonomy". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/e57764ce-8c26-4ab9-a6d2-0b8a324f828c">https://bionomia.net/dataset/e57764ce-8c26-4ab9-a6d2-0b8a324f828c</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/e57764ce-8c26-4ab9-a6d2-0b8a324f828c">https://gbif.org/dataset/e57764ce-8c26-4ab9-a6d2-0b8a324f828c</a>. Formatted as a Frictionless Data package.
Linked collectors and determiners for: Clarification of morphological characters and geographical distribution of Artemisia neosinensis (Asteraceae, Anthemideae), a strikingly misunderstood species from China.
Natural history specimen data linked to collectors and determiners held within, "Clarification of morphological characters and geographical distribution of Artemisia neosinensis (Asteraceae, Anthemideae), a strikingly misunderstood species from China". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/074685e0-5959-4661-ac0b-b76362005c09">https://bionomia.net/dataset/074685e0-5959-4661-ac0b-b76362005c09</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/074685e0-5959-4661-ac0b-b76362005c09">https://gbif.org/dataset/074685e0-5959-4661-ac0b-b76362005c09</a>. Formatted as a Frictionless Data package.
Linked collectors and determiners for: A new huriine genus and notes on morphological characters (Araneae: Salticidae: Salticinae).
Natural history specimen data linked to collectors and determiners held within, "A new huriine genus and notes on morphological characters (Araneae: Salticidae: Salticinae)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/7485af56-f9e8-450c-babe-9d6ae7415729">https://bionomia.net/dataset/7485af56-f9e8-450c-babe-9d6ae7415729</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/7485af56-f9e8-450c-babe-9d6ae7415729">https://gbif.org/dataset/7485af56-f9e8-450c-babe-9d6ae7415729</a>. Formatted as a Frictionless Data package.
Linked collectors and determiners for: A taxonomic review of the coastal genus Iotarphia Cameron (Coleoptera: Staphylinidae: Aleocharinae) with a description of new species based on morphological and molecular characters.
Natural history specimen data linked to collectors and determiners held within, "A taxonomic review of the coastal genus Iotarphia Cameron (Coleoptera: Staphylinidae: Aleocharinae) with a description of new species based on morphological and molecular characters". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/aea7d978-e7e9-460a-b618-c7ece0e0534c">https://bionomia.net/dataset/aea7d978-e7e9-460a-b618-c7ece0e0534c</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/aea7d978-e7e9-460a-b618-c7ece0e0534c">https://gbif.org/dataset/aea7d978-e7e9-460a-b618-c7ece0e0534c</a>. Formatted as a Frictionless Data package.
Figure 2 in A new species of freshwater crab (Decapoda: Brachyura: Potamidae) from Dongyin Island, Matsu, Taiwan, defined by morphological and molecular characters, with notes on its biogeography
Figure 2. Nanhaipotamon dongyinense sp. nov.: (A–F) holotype male (31.3×25.8 mm) (NMNS 4557-001); (G, H) allotype female (26.5×22.2 mm) (NMNS 4557-002). (A) Third maxilliped; (B) male abdomen; (C) left G1, in situ; (D) left G1; (E) left G1, distal segment; (F) left G2; (G) female abdomen; (H) female gonopore.
Figure 3 in A new species of freshwater crab (Decapoda: Brachyura: Potamidae) from Dongyin Island, Matsu, Taiwan, defined by morphological and molecular characters, with notes on its biogeography
Figure 3. (A–C) Dorsal, frontal and ventral views of the fresh-preserved male paratype (CW 36.28 mm) (NMNS 4557-003) of Nanhaipotamon dongyinense sp. nov., Dongyin Island, Matsu, Taiwan; (D) live coloration of the female paratype (CW 29.66 mm) (NMNS 4557-008); (E) habitat; (F) a chimney around the entrance of burrow.
Figure 1 in A new species of freshwater crab (Decapoda: Brachyura: Potamidae) from Dongyin Island, Matsu, Taiwan, defined by morphological and molecular characters, with notes on its biogeography
Figure 1. Collection sites for Nanhaipotamon species used in this study. For locality names see Table I.
Figure 3 in Morphological variability and evaluation of taxonomic characters in the genus Erythemis Hagen, 1861 (Odonata: Libellulidae: Sympetrinae)
Figure 3. PCA diagrams for the first two factors using continuous characters as defined in the present study. a) Biplot shows distribution of morphological characters in M of Erythemis. Numbers represent the following ratio characters: 1) Lab/Lecv-clS3, 2) Lab/LcaS3, 3) LFW/Lnpt, 4) Lab/LclS3, 5) Antr /Lar, 6) Lar/Lba, 7) Acd/lban, 8) AnptHW/LoptHW, 9) Lnpt/Anb, 10) LHW/ Acd, 11) Lban/ Lasa-ca, 12) LHW/Lab, 13) Lban/Anb, 14) LHW/LFW, 15) Las/Ddas, 16) Lba/Lban, 17) LclS3/ LcaS3, 18) Lecv-clS3/LcaS3, 19) Las/Anas, 20) Lab/Las. b) Biplot shows distribution of morphological characters in F of Erythemis. Numbers represent the following characters: 1) Lab/ Lecv-clS3, 2) Lab/LcaS3 3) Lab/LclS3, 4) Lab/Las, 5) LHW/Acd, 6) Lban/Anb, 7) Lecv-clS3/LcaS3, 8) Acd/lban, 9) Lar/Lba, 10) Antr/Lar, 11) LFW/Lnpt, 12) AnptHW/LoptHW, 13) LHW/Lab. See above for abbreviations.
Figure 2 in Morphological variability and evaluation of taxonomic characters in the genus Erythemis Hagen, 1861 (Odonata: Libellulidae: Sympetrinae)
Figure 2. Plots of the first two discriminant functions of the discriminant analysis. a) The first two discriminant functions explain 72.5% in males, the cases in where species are overlapped were analyzed by separated in b. b) The first two discriminant functions explain 88.3% in males, and c) The first two discriminant functions explain 83.7% in F. Polygons define the limits of proposed groups.
Figure 1. a in Morphological variability and evaluation of taxonomic characters in the genus Erythemis Hagen, 1861 (Odonata: Libellulidae: Sympetrinae)
Figure 1. a) Plot showing continuous variation for the character distance between lateral and ventral carinae (dlvc), opposite to meeting point of lateral and medial transverse carinae on S3 (lmt). Numbers represent the following species: 1) E. attala, 2) E. carmelita, 3) E. collocata, 4) E. credula, 5) E. haematogastra, 6) E. mithroides, 7) E. peruviana, 8) E. plebeja, 9) E. simplicicollis, 10) E. vesiculosa. b) S1-3 E. carmelita males showing the measures from Williamson (1923): distance between lateral and ventral carinae (dlvc), divided by the measure of distance between meeting point of lateral and medial transverse carinae and ventral carinae (lmt).
Figures 10–17 in Morphological variability and evaluation of taxonomic characters in the genus Erythemis Hagen, 1861 (Odonata: Libellulidae: Sympetrinae)
Figures 10–17. Discrete characters of vulvar lamina, abdominal appendages, thorax, and femur. Numbers represent the following species: 10) E. peruviana female; 11) E. plebeja female; 12) E. simplicicollis male; 13) E. mithroides male; 14) E. vesiculosa male; 15) E. peruviana female; 16) E. vesiculosa female, 17) E. attala male. Abbreviations indicate the following characters, S 8 -S 9: Abdominal segments 8-9; LV: Vulvar lamina; Pb: Posterior border; Vt: Teeth ventral; Ai: Inferior appendage; As: Antehumeral stripe.
Figures 4–9. Morphometric characters. 4 in Morphological variability and evaluation of taxonomic characters in the genus Erythemis Hagen, 1861 (Odonata: Libellulidae: Sympetrinae)
Figures 4–9. Morphometric characters. 4) S1-3 of E. carmelita male, 5-6) E. simplicicollis male; 7) E. peruviana female; 8) FW of E. vesiculosa male; 9) E. simplicicollis male. Abbreviations indicate the following characters, LFW, LHW: FW or HW length; Lnpt: Nodus-pterostigma length; Antr: Triangle width; Lar: Arculus-second antenodal length; Lba: wing base-arculus length; Lban: Wing base-nodus length; Anpt: Pterostigma width; Lopt: Pterostigma length; Ansbt: Subtriangle width; Acd: HW discoidal field posterior border width; Anb: HW base width; Lasa-ca: Supplementary anal vein-Cu-A crossvein, Lab: Abdomen length; Las: Cercus length; Ddas: reach of teeth on ventral region of cercus; Anas: Anterolateral width of cercus; S: Abdominal segment 3; LclS3: Lateral carina length; LcaS3: 3 Apical carina length; Lecv: Ventral carina length; Lecv-clS3: Basal area between ventral-lateral carinae on S3; Wm: Width medial region of the abdominal segment; S 8: Abdominal segment 8; S 9: Abdominal segment 9; Lal: Female lamina length from base of basal lobe to apex.
Figures 18–25 in Morphological variability and evaluation of taxonomic characters in the genus Erythemis Hagen, 1861 (Odonata: Libellulidae: Sympetrinae)
Figures 18–25. Discrete characters of vesica spermalis. Numbers represent the following species: 18) E. mithroides, dorsal view; 19) E. carmelita, left side view; 20) E. vesiculosa, left side view; 21) E. peruviana, left side view; 22) E. credula, dorsal wiew; 23) E. haematogastra, right side view; 24) E. credula, finger-shaped structures, dorsal view; 25) E. plebeja, dorsal view. Abbreviations indicate the following characters, C: Cornua; L: Lateral lobe; H: Hook; Pb: Posterior border; M: Medial lobe; P: Posterior lobe; NH: Hook not bilobed.
Fig. 60. Unambiguous character changes mapped onto topology from figure 57A. Each circle represents a in Morphology And Relationships Of Apternodus And Other Extinct, Zalambdodont, Placental Mammals
Fig. 60. Unambiguous character changes mapped onto topology from figure 57A. Each circle represents a character state change, with the character number above and state below (corresponding to the list given in the text and in table 5). Changes represented by solid circles show less homoplasy than those represented by open circles.
Fig. 29. Character trace for Character 4 in Basicranial Morphology And Relationships Of Antillean Heptaxodontidae (Rodentia, Ctenohystrica, Caviomorpha)
Fig. 29. Character trace for Character 4: Absence/presence of pessulus traversing stapedial obturator foramen (0, white; 1, black; vertical striping, equivocality). The wide distribution of the pessulus indicates that it is probably a primitive feature in ctenohystricans. It is highly likely that there are many other occurrences of pessuli in taxa not investigated here. ''Echimyidae'' here refers to Proechimys and Dactylomys only.
Fig. 27. Character trace for Character 1 in Basicranial Morphology And Relationships Of Antillean Heptaxodontidae (Rodentia, Ctenohystrica, Caviomorpha)
Fig. 27. Character trace for Character 1: Absence/presence of tympanic fenestra (0, white; 1, grey; 2, black). With this topology, C1:2, isolated, suture-delimited aperture emerges as a diagnostic feature of extant Chinchillidae + Amblyrhiza, with no examples of convergence and with Dinomys and Eumegamys showing an alternative state. Placing Amblyhiza among octodontoids as a relative of Geocapromys, as some authors have suggested, seems unparsimonious in light of the fact that in this superfamily neither this state nor (with the exception of Octodon) the less derived state, C1:1, notch only (bridged or unbridged), is known to occur. In this and the following figure ''Echimyidae'' refers to the four representative taxa of spiny rats selected for study (Echimys, Proechimys, Lonchothrix, Dactylomys), which are invariant for the characters traced.
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