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208 results for “groove”
FIGURE 11 in New materials of Estesia mongoliensis (Squamata: Anguimorpha) and the evolution of venom grooves in lizards
FIGURE 11. Character evolution of tooth specializations in the Anguimorpha. The labels on the branches indicate the origination of derived states as optimized on the tree (ACCTRAN optimization). Clades in black are those with specializations (derived states) on the marginal teeth. Clades in gray are those that show the plesiomorphic state of the corresponding characters: Character 429 – root-to-tip grooves in marginal teeth: (0) absent; (1) present, at anterior carina; (2) present, at anterior and posterior carinae. Character 430 – serrations on marginal teeth: (0) absent; (1) present.
FIGURE 10 in New materials of Estesia mongoliensis (Squamata: Anguimorpha) and the evolution of venom grooves in lizards
FIGURE 10. The strict consensus tree of the morphology-only analysis. The clade in grey shade is the Monstersauria.
FIGURE 6 in New materials of Estesia mongoliensis (Squamata: Anguimorpha) and the evolution of venom grooves in lizards
FIGURE 6. The mandible of IGM 3/196 in dorsal and ventral views. Scale bar = 10 mm; abbreviations are listed in appendix 6.
FIGURE 9 in New materials of Estesia mongoliensis (Squamata: Anguimorpha) and the evolution of venom grooves in lizards
FIGURE 9. The strict consensus tree of the combined analysis of morphological and molecular data. Support values are labeled beneath branches. The number written before the slash is bootstrap value; the number written after the slash is Bremer support. Only bootstrap values above 50% are listed, so some branches show only Bremer support values.
FIGURE 3. A in New materials of Estesia mongoliensis (Squamata: Anguimorpha) and the evolution of venom grooves in lizards
FIGURE 3. A. Skull of IGM 3/196 in dorsal and ventral view (scale bar = 10 mm). B. Line drawings of the skull of IGM 3/196 in dorsal and ventral view (scale bar =10 mm). Abbreviations are listed in appendix 6.
Text-fig. 1. Scanning electron micrographs of Mugideiriflora portugallica gen. et sp. nov. from the Early Cretaceous Catefica locality, Portugal (holotype, S174254, Catefica sample 150). a) Flower in oblique lateral view showing numerous broad tepals, numerous inwardly curved stamens and the flat floral receptacle with a conical gynoecial region; b–c) Flower in two different oblique apical views showing numerous broad laminar tepals and inwardly curved stamens surrounding the carpels; note cellular differences between outer (op) and inner (in) perianth parts, as well as bases of anthers, apparently with laterally to slightly dorsally placed pollen sacs (arrow heads); d) Detail of flower showing a cluster of poorly differentiated carpels in the center surrounded by elongated stamens; note grooves in the dorsal surface of the stamens indicating the position of the pollen sacs; e) Detail of flower showing the broad bases of the laminar tepals, rhomboidal stamen bases and poorly differentiated carpels; f) Detail of flower showing inwardly arched stamens and poorly differentiated carpels. Scale bars = 1 mm (a–c), 200 µm (d–f). in Multiparted, Apocarpous Flowers From The Early Cretaceous Of Eastern North America And Portugal
Text-fig. 1. Scanning electron micrographs of Mugideiriflora portugallica gen. et sp. nov. from the Early Cretaceous Catefica locality, Portugal (holotype, S174254, Catefica sample 150). a) Flower in oblique lateral view showing numerous broad tepals, numerous inwardly curved stamens and the flat floral receptacle with a conical gynoecial region; b–c) Flower in two different oblique apical views showing numerous broad laminar tepals and inwardly curved stamens surrounding the carpels; note cellular differences between outer (op) and inner (in) perianth parts, as well as bases of anthers, apparently with laterally to slightly dorsally placed pollen sacs (arrow heads); d) Detail of flower showing a cluster of poorly differentiated carpels in the center surrounded by elongated stamens; note grooves in the dorsal surface of the stamens indicating the position of the pollen sacs; e) Detail of flower showing the broad bases of the laminar tepals, rhomboidal stamen bases and poorly differentiated carpels; f) Detail of flower showing inwardly arched stamens and poorly differentiated carpels. Scale bars = 1 mm (a–c), 200 µm (d–f).
Text-fig. 5. Scanning electron micrographs (d–g) and synchrotron radiation X-ray tomographic microscopy orthoslices (a–c) of flowers of Atlantocarpus virginiensis gen. et sp. nov. (a–d: holotype, PP43780, Puddledock sample 156), Atlantocarpus sp. from the Early Cretaceous Buarcos locality (e, f: S105025, Buarcos sample 244) and receptacle of Atlantocarpus? from the Early Cretaceous Vale de Água locality (g: S101300, Vale de Água sample 141). a) Flower in lateral view showing scar from a single bract (br), attachment scars of tepals (t) and stamens (st) on the expanded basal portion of elongated receptacle and young carpels; b) Flower in lateral view showing expanded basal portion of the elongated receptacle and young carpels; c) Flower in longitudinal section showing expanded basal portion of the elongated receptacle and young carpels; note the irregular, possibly expanded stigmatic region (arrow heads), (orthoslice yz0340); d) Flower in lateral view showing attachment scars of tepals (t) and stamens (st) on the expanded basal portion of elongated receptacle and young carpels with possible grooved stigmatic regions (arrow heads); e) Flower in lateral view showing expanded basal portion of elongated receptacle and young carpels; f) Detail of flower in (e) showing in Multiparted, Apocarpous Flowers From The Early Cretaceous Of Eastern North America And Portugal
Text-fig. 5. Scanning electron micrographs (d–g) and synchrotron radiation X-ray tomographic microscopy orthoslices (a–c) of flowers of Atlantocarpus virginiensis gen. et sp. nov. (a–d: holotype, PP43780, Puddledock sample 156), Atlantocarpus sp. from the Early Cretaceous Buarcos locality (e, f: S105025, Buarcos sample 244) and receptacle of Atlantocarpus? from the Early Cretaceous Vale de Água locality (g: S101300, Vale de Água sample 141). a) Flower in lateral view showing scar from a single bract (br), attachment scars of tepals (t) and stamens (st) on the expanded basal portion of elongated receptacle and young carpels; b) Flower in lateral view showing expanded basal portion of the elongated receptacle and young carpels; c) Flower in longitudinal section showing expanded basal portion of the elongated receptacle and young carpels; note the irregular, possibly expanded stigmatic region (arrow heads), (orthoslice yz0340); d) Flower in lateral view showing attachment scars of tepals (t) and stamens (st) on the expanded basal portion of elongated receptacle and young carpels with possible grooved stigmatic regions (arrow heads); e) Flower in lateral view showing expanded basal portion of elongated receptacle and young carpels; f) Detail of flower in (e) showing
Text-fig. 3. Scanning electron microscope (SEM) images of a charalean oospore (a), and fragments of probable marchantialean liverwort thalli (b–d); Torres Vedras locality, Portugal. a) Apical view of oospore showing the pattern of spiral ridges and grooves resulting from the enclosing cells of the oogonium. b–d) Thallus fragments in probable ventral view showing two rows of imbricate scales and occasional branching of the thallus (d). Specimens, TV38-S174607 (a), TV43-S174655 (b), TV43-S174654 (c), TV43-S174661 (d). Scale bars 1 mm (b–d), 100 Μm (a). in The Early Cretaceous Mesofossil Flora Of Torres Vedras (Ne Of Forte Da Forca), Portugal: A Palaeofloristic Analysis Of An Early Angiosperm Community
Text-fig. 3. Scanning electron microscope (SEM) images of a charalean oospore (a), and fragments of probable marchantialean liverwort thalli (b–d); Torres Vedras locality, Portugal. a) Apical view of oospore showing the pattern of spiral ridges and grooves resulting from the enclosing cells of the oogonium. b–d) Thallus fragments in probable ventral view showing two rows of imbricate scales and occasional branching of the thallus (d). Specimens, TV38-S174607 (a), TV43-S174655 (b), TV43-S174654 (c), TV43-S174661 (d). Scale bars 1 mm (b–d), 100 Μm (a).
Text-fig. 12. Scanning electron microscope (SEM) images of pollen of Sergipea sp. from a group of probable fragmentary pollen sacs; Torres Vedras locality, Portugal. a) Cluster of probable fragmentary pollen sacs that yielded the pollen in this Text-figure; b, c) Pollen grains showing the robust longitudinal ribs separated by prominent areas of granular exine; note the groove along the margins of the longitudinal ribs (arrowheads); d) Pollen grain showing the granular exine flanked by two robust ribs; note the groove along the margins of the longitudinal ribs (arrowheads). Specimen, TV44-S148012 (a–d). Scale bars 150 Μm (a), 12 Μm (c), 6 Μm (b, d). in The Early Cretaceous Mesofossil Flora Of Torres Vedras (Ne Of Forte Da Forca), Portugal: A Palaeofloristic Analysis Of An Early Angiosperm Community
Text-fig. 12. Scanning electron microscope (SEM) images of pollen of Sergipea sp. from a group of probable fragmentary pollen sacs; Torres Vedras locality, Portugal. a) Cluster of probable fragmentary pollen sacs that yielded the pollen in this Text-figure; b, c) Pollen grains showing the robust longitudinal ribs separated by prominent areas of granular exine; note the groove along the margins of the longitudinal ribs (arrowheads); d) Pollen grain showing the granular exine flanked by two robust ribs; note the groove along the margins of the longitudinal ribs (arrowheads). Specimen, TV44-S148012 (a–d). Scale bars 150 Μm (a), 12 Μm (c), 6 Μm (b, d).
Text-fig. 2. Quinquala obovata gen. et sp. nov., fruits from Kisinger Lakes flora, Wyoming. a: Lateral view of fruit on long pedicel. Note the two lateral wings and pair of longitudinal grooves representing wings extending into the matrix. UF 19376-60038. b: Lateral view of fruit on long, bent pedicel. Note the perianth scar at the base of the fruit (arrow). UF 19376-60023a. c: Lateral view of fruit on long, slightly bent pedicel. Note the pair of longitudinal grooves representing wings extending into the matrix, and in Winged Fruits Of Rutaceous Affinity From The Eocene Of Western North America
Text-fig. 2. Quinquala obovata gen. et sp. nov., fruits from Kisinger Lakes flora, Wyoming. a: Lateral view of fruit on long pedicel. Note the two lateral wings and pair of longitudinal grooves representing wings extending into the matrix. UF 19376-60038. b: Lateral view of fruit on long, bent pedicel. Note the perianth scar at the base of the fruit (arrow). UF 19376-60023a. c: Lateral view of fruit on long, slightly bent pedicel. Note the pair of longitudinal grooves representing wings extending into the matrix, and
Text-fig. 2. Metacheiromys marshii, AMNH 131777, drawing of basicranium in ventral view with isosurface from CT scans of left petrosal inserted (compare with Simpson 1931: fig. 7). Much of the mastoid exposure on the specimen's left side is damaged. Numbers 1 to 4 indicate depressions that based on the right side include a thin layer of entotympanic; 1 to 3 are between petrosal and basioccipital and 4 is petrosal only. The white arrow in the lower left passes through a canal between the petrosal and exoccipital for the auricular branch of the vagus nerve. Abbreviations: abX – grooves and foramina for auricular branch of vagus nerve, as – alisphenoid, astp – alisphenoid tympanic process, bo – basioccipital, bs – basisphenoid, eam – roof of external acoustic meatus, ec – ectotympanic, en – entotympanic, eo – exoccipital, es – epitympanic sinus of squamosal, fm – foramen magnum, fo – foramen ovale, gf – glenoid fossa, hf – hypoglossal foramen, ips – foramen for inferior petrosal sinus, ljf – lateral jugular foramen, me – mastoid exposure of petrosal, mjf – medial jugular foramen, mt – muscular tubercle, mtc – musculotubal canal, oc – occipital condyle, pa – porus acousticus (hidden), pas – parasphenoid, pgp – postglenoid process, pr – promontorium of petrosal, ps – presphenoid, smf – stylomastoid foramen, sof – superior orbital fissure, sq – squamosal, tca – tympanic canaliculus, th – tympanohyal, tm – tubular external acoustic meatus. in Skeletal Anatomy Of The Basicranium And Auditory Region In The Metacheiromyid Palaeanodont Metacheiromys (Mammalia, Pholidotamorpha) Based On High-Resolution Ct Scans
Text-fig. 2. Metacheiromys marshii, AMNH 131777, drawing of basicranium in ventral view with isosurface from CT scans of left petrosal inserted (compare with Simpson 1931: fig. 7). Much of the mastoid exposure on the specimen's left side is damaged. Numbers 1 to 4 indicate depressions that based on the right side include a thin layer of entotympanic; 1 to 3 are between petrosal and basioccipital and 4 is petrosal only. The white arrow in the lower left passes through a canal between the petrosal and exoccipital for the auricular branch of the vagus nerve. Abbreviations: abX – grooves and foramina for auricular branch of vagus nerve, as – alisphenoid, astp – alisphenoid tympanic process, bo – basioccipital, bs – basisphenoid, eam – roof of external acoustic meatus, ec – ectotympanic, en – entotympanic, eo – exoccipital, es – epitympanic sinus of squamosal, fm – foramen magnum, fo – foramen ovale, gf – glenoid fossa, hf – hypoglossal foramen, ips – foramen for inferior petrosal sinus, ljf – lateral jugular foramen, me – mastoid exposure of petrosal, mjf – medial jugular foramen, mt – muscular tubercle, mtc – musculotubal canal, oc – occipital condyle, pa – porus acousticus (hidden), pas – parasphenoid, pgp – postglenoid process, pr – promontorium of petrosal, ps – presphenoid, smf – stylomastoid foramen, sof – superior orbital fissure, sq – squamosal, tca – tympanic canaliculus, th – tympanohyal, tm – tubular external acoustic meatus.
Figure 5 in The ossified Meckel's cartilage and internal groove in Mesozoic mammaliaforms: implications to origin of the definitive mammalian middle ear
Figure 5. (A) The skull of Zhangheotherium (IVPP V7466). 1, Meckelian groove; 2, ossified Meckel's cartilage; 3, a hyoid element. (B) Medial view of the left mandible with partial ossified Meckel's cartilage of Gobiconodon (IVPP V12585).
Figure 1 in The ossified Meckel's cartilage and internal groove in Mesozoic mammaliaforms: implications to origin of the definitive mammalian middle ear
Figure 1. The right mandible and ossified Meckel's cartilage (OMC) of Repenomamus (holotype, IVPP V12549). (A & B) Medial views of the mandible with the OMC being removed in (A); (C) dorsomedial view; (D) ventral view; (E) radiographic image of the mandible; (F) a hyoid element from IVPP V12728. Modified from Wang et al. (2001).
Figure 4 in The ossified Meckel's cartilage and internal groove in Mesozoic mammaliaforms: implications to origin of the definitive mammalian middle ear
Figure 4. Ossified Meckel's cartilages (OMC) of Repenomamus. (A–D) Ventral, lateral, dorsal, and medial views of the OMC in IVPP V12549; (E–H) the same views of the OMC in IVPP V12728.
Raw measurements data of piezo actuator displacements, in a form of a groove pattern, obtained with a laser interferometer and a roundness instrument
<p><strong>A brief description of the repository content</strong></p> <p>The data presented here were obtained during an experimental calibration of the Taylor Hobson 130 (Leicester, UK) roundness instrument with the Thorlabs LPS710M (Thorlabs, Newton, NJ, USA) piezo actuator driven by Thorlabs PPC001 Piezo Controller and controlled with Kinesis® (Thorlabs) software. Before the calibration, the piezo actuator itself was calibrated with the Renishaw XL-80 interferometer system (Renishaw, Wotton-under-Edge, UK) along with the Renishaw small optics kit (A-8003-3244). These data are included in the repository as well.</p> <p><strong>Description of the dataset</strong></p> <p>Inside the .zip file, the data obtained with the Renishaw XL-80 laser interferometer and the Taylor Hobson 130 roundness instrument are stored in the “Renishaw_XL-80” and “Taylor_Hobson_130” folders, respectively. Each of these folders contains six subfolders: “0.24um”, “0.75um”, “2.4um”, “7.5um”, “24um”, and “75um”, which include the measurements data obtained with these devices (not simultaneously) while Thorlabs LPS710M piezo actuator was performing displacements simulating a groove pattern. The names of subfolders correspond to the groove’s depth.</p> <p>The data from the measurements performed with the Renishaw XL-80 interferometer were exported with the Laser XL system’s software and are saved with the extension “.RTX”. Two data files are available for each depth being considered that correspond to two measurement series. Inside each file, 40 s recording is stored. Eight grooves should be visible (nominal values: 1.5 s groove width, 3 s distance between subsequent grooves). The data were acquired with a 50 kS/s sampling rate.</p> <p>The data from the measurements performed with the Taylor Hobson 130 roundness instrument were exported with the Ultra® (Taylor Hobson) software and are saved with the extension “.SBF”. 30 data files are available for each depth being considered - 15 files for each of two measurement series. Inside each file, 10 s recording is stored. Two grooves should be visible (nominal values: 1 s groove width, 4 s distance between subsequent grooves). The data were acquired with a 360 S/s sampling rate.</p> <p>Caution:</p> <ul> <li>No synchronisation between the piezo actuator and XL-80 interferometer or Taylor Hobson 130 roundness instrument was used. Thus, the first or the last groove within the response to the simulated pattern might be too short to be considered valid.</li> <li>The square excitation of the piezo actuator was used. Thus, ringing oscillations near the grooves’ edges are present.</li> <li>The motion of the piezo actuator might happen to be initiated while the acquisition already had started. Thus, the first response inside each file should be analysed carefully.</li> <li>The piezo actuator did not hold time dependencies properly. The widths of simulated grooves usually differ from their nominal values to some extent.</li> </ul> <p><strong>Acknowledgement</strong></p> <p>This dataset was obtained within the 18RP01 ProbeTrace project. This project (18RP01 – ProbeTrace) has received funding from the EMPIR programme co-financed by the Participating States and from the European Union's Horizon 2020 research and innovation programme.</p> <p>Project title: Traceability for contact probe and stylus instrument measurements<br> Funder name: European Metrology Programme for Innovation and Research (EMPIR)<br> Funder ID: 10.13039/100014132<br> Grant number: 18RP01 ProbeTrace<br> Link to project homepage: http://probetrace.org/</p>
Text-fig. 19. Synchrotron radiation X-ray tomographic microscopy (SRXTM, a–c) of Aristospermum huberi and scanning electron microscope (SEM, d, e) images of Choffaticarpus compactus; Catefica locality, Portugal. a) Volume rendering of strongly flattened, triangular seed with pointed micropylar region; note thin-walled cells of outer integument preserved along the margins of the seed and pitted surface of the crystalliferous inner cells of outer integument where the outer cells are abraded and the narrow, lateral funicle/raphe; b) Volume rendering of seed showing surface of inner integument (endotesta) with cells showing clear imprints of crystals (arrows); c) Longitudinal section (orthoslice yz0241) of seed showing crystalliferous cells of endotesta (white arrows) and the two fiber layers of the tegmen that are perpendicular to each other (inner integument, ii-f, black arrows); d) Fragment of multiparted, apocarpous fruiting structure showing several helically-arranged, laterally flattened, fruitlets; e) Fruitlet in lateral view showing the prominent ventral face with its lateral groove, short attachment scar, and sunken regions of the fruit wall that indicate the probable presence of oil cells. Specimens, Catefica 49-S266049 (a–c), Catefica 49-S172558 (d), Catefica 49-S118675 (e). Scale bars = 300 Μm (a, c–e), 100 Μm (b). in The Early Cretaceous Mesofossil Flora Of Catefica, Portugal: Angiosperms
Text-fig. 19. Synchrotron radiation X-ray tomographic microscopy (SRXTM, a–c) of Aristospermum huberi and scanning electron microscope (SEM, d, e) images of Choffaticarpus compactus; Catefica locality, Portugal. a) Volume rendering of strongly flattened, triangular seed with pointed micropylar region; note thin-walled cells of outer integument preserved along the margins of the seed and pitted surface of the crystalliferous inner cells of outer integument where the outer cells are abraded and the narrow, lateral funicle/raphe; b) Volume rendering of seed showing surface of inner integument (endotesta) with cells showing clear imprints of crystals (arrows); c) Longitudinal section (orthoslice yz0241) of seed showing crystalliferous cells of endotesta (white arrows) and the two fiber layers of the tegmen that are perpendicular to each other (inner integument, ii-f, black arrows); d) Fragment of multiparted, apocarpous fruiting structure showing several helically-arranged, laterally flattened, fruitlets; e) Fruitlet in lateral view showing the prominent ventral face with its lateral groove, short attachment scar, and sunken regions of the fruit wall that indicate the probable presence of oil cells. Specimens, Catefica 49-S266049 (a–c), Catefica 49-S172558 (d), Catefica 49-S118675 (e). Scale bars = 300 Μm (a, c–e), 100 Μm (b).
Copulatory openings large (c3), connected by transverse groove (c4) in An of Zelotibia (Araneae, Gnaphosidae), a spider genus with a species swarm in the Albertine Rift
Copulatory openings large (c3), connected by transverse groove (c4)
Grooved Axe
**Three-quarter grooved axe** Location: Doerschuk site D10, Davidson County, North Carolina. Period: Late Archaic (3000-1000 BC). Material: granite. Dimensions: length, 178.0 mm; width, 81.4 mm; thickness, 65.1 mm. Notes: Uncataloged specimen donated by Herbert M. Doerschuk, North Carolina Archaeological Collection, Research Laboratories of Archaeology, University of North Carolina at Chapel Hill. Illustrated in *Town Creek Indian Mound: A Native American Legacy,* by Joffre L. Coe, University of North Carolina Press, Chapel Hill, 1995, Figure 10.20B. Model by Steve Davis. Source: Objaverse 1.0 / Sketchfab
Grooved adz with scale
This unusual artifact was found near Monroe, NC in 1973 by local landowner, Ken Batson. This suspected grooved adz is made out of local meta-argillite and has a deliberately modified area where a handle was likely attached. This distinct "neck" was created using a technique of pecking and grinding. Unlike a typical grooved axe, the bit end of this tool would have been oriented perpendicular to the handle and was not ground smooth. Note the edge damage on the bit end. An adz is woodworking tool used to dress, shape, or smooth timber and could have been used prehistorically to make wooden bowls, dugout canoes, or other wooden objects. It is unclear how old this object is, but if it was made during the time that many of the grooved axes were being made and used, it would likely date to the Late Archaic period (3000-1000 BC). It measures approximately 18.5 cm long, 5.2 cm tall, and 3.8 cm wide. This model was constructed by David Cranford using 46 digital photos and Agisoft Metashape software. Credit: NCDNCR/OSA Source: Objaverse 1.0 / Sketchfab
FR079, Late Archaic, grooved axe
Grooved Axe Late Archaic Catalog #: P344 Uploaded by Carson Wright Suggested Data Citation: Thompson, Christine, Erin Powers, Carson Wright, and Kevin C. Nolan, 2021. FRHS_FR079, 3D Model .ply file. Digital Exhibit of Fort Recovery Historical Society's Precontact Collection, Fort Recovery Historical Society and Applied Anthropology Laboratories, Ball State University. Source: Objaverse 1.0 / Sketchfab
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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