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443 results for “Cephalopod”
Fig. 10 in Cephalopods From The Cretaceous/Tertiary Boundary Interval On The Atlantic Coastal Plain, With A Description Of The Highest Ammonite Zones In North America. Part 2. Northeastern Monmouth County, New Jersey
Fig. 10. Formational contact between the New Egypt and Hornerstown Formations at AMNH loc.
Fig. 1 in Cephalopods From The Cretaceous/Tertiary Boundary Interval On The Atlantic Coastal Plain, With A Description Of The Highest Ammonite Zones In North America. Part 2. Northeastern Monmouth County, New Jersey
Fig. 1. Map of parts of New Jersey and Maryland showing localities mentioned in text.
Fossil Cephalopod (Baculites sp)
**Ejemplar:**** Baculites** sp. **Edad:** 83´6-72´1Ma. Campaniense (Cretácico Superior) **Localidad:** Brandon (Canada) **Descripción:** fragmento recto del fragmocono con preservación de la concha original aragonítica mostrando irisaciones. En un extremo se aprecia el septo de una cámara así como la líneas de sutura en la superficie de la concha. Esta preservación se considera excepcional al conservarse el aragonito de la concha. **Dimensión ejemplar:** 7 cm. longitud máxima **Sigla museo, colección y entidad:** MGUV 1318, colección Paleontológica de cefalópodos del Museo de la Universitat de valència de Historia Natural **Técnica digitalización / equipo: ** fotogemetría con Metashape, 94 fotografías calida nube densa y malla poligonal alta, Cámara Pentax Mark II **Autor digitalización:** Jose A. Villena **Donación:** Javier Aznar **Cita ejemplar:** colección Paleontológica de Cefalópodos del Museo de la universitat de valència de Historia Natural Source: Objaverse 1.0 / Sketchfab
Hydrostatic models of theoretical planispiral ectocochleate cephalopods
<p>Zipped folder containing virtual models (in .STL format) of theoretical ectocochleate cephalopods (oxycone, serpenticone, sphaerocone, and morphospace center). There are four components of each model used in hydrostatic calculations: 1) shell, 2) chambers (camerae), 3) soft body, and 4) water displaced. Each near-endmember morphotype has two versions: 1) Body chamber lengths allowing neutral buoyancy with <em>Nautilus</em>-like chamber liquid (~12%), and 2) Body chamber lengths of the representative specimens used to build the models (<em>Sphenodiscus </em>for oxycone, <em>Dactylioceras </em>for serpenticone, and <em>Goniatites </em>for sphaerocone).</p>
Figure 6 in The Paleocene cephalopod fauna from Pebble Point, Victoria (Australia) - fulcrum between two Eras
Figure 6. Nautilus praepompilius from Pebble Point, AM C 143662. Scale bar = 10 mm.
Figure 1 in The Paleocene cephalopod fauna from Pebble Point, Victoria (Australia) - fulcrum between two Eras
Figure 1. Map showing the location of sampling from Pebble Point Formation outcrop.
Fig. 6 in Large onychites (cephalopod hooks) from the Upper Jurassic of the Boreal Realm
Fig. 6. Morphological terms for mega−onychites, based on Engeser (1987).
Fig. 2 in Concentrations of juvenile and small adult cephalopods in the Hirnantian cherts (Late Ordovician) of Porkuni, Estonia
Fig. 2. Sedimentology and stratigraphic division of the Porkuni section, Estonia.
Fig. 1 in Sublethal injuries in Early Devonian cephalopod shells from Morocco
Fig. 1. Geologic map of Morocco (A) and detail of the eastern Anti−Atlas (B).
Fig. 8 in Gladius shape variation in coleoid cephalopod Trachyteuthis from the Upper Jurassic Nusplingen and Solnhofen Plattenkalks
Fig. 8. Stratigraphic occurrence and possible phylogenetic relationships of fossil octobrachians.
Environmental DNA Metabarcoding of Cephalopod Diversity in the Tyrrhenian Deep Sea
<p>This dataset contains the raw demultiplexed reads of the study "Environmental Metabarcoding of Cephalopod Diversity in the Tyrrhenian Deep Sea". eDNA was extracted from water (wat) and sediment (sed) matrices, amplified with Ceph18S primers that specifically target cephalopods (de Jonge et al. 2021), and sequenced on IonTorrent platform. The names of the files indicate the sampling station (ST1, ST4, ST5, ST6), the replicate number (R1, R2), and the environmental matrix (wat, sed). </p>
Cephalopod retinal development shows vertebrate-like mechanisms of neurogenesis: Multiple sequence alignments and phylogenetic trees
<p>Coleoid cephalopods, including squid, cuttlefish and octopus, have large and complex nervous systems and camera-type eyes that are comparable only to features that have independently evolved in the vertebrate lineage. The changes in development that result in the evolution of nervous system size and diversity of neural cell-types are not well understood. Here, we have pioneered live-imaging techniques and performed functional interrogation to show the squid, <em>Doryteuthis</em> <em>pealeii</em>, utilizes mechanisms during retinal neurogenesis that are hallmarks of vertebrate processes. Given the convergent evolution of elaborate visual systems in cephalopods and vertebrates, these results reveal common mechanisms that underlie the growth of highly proliferative neurogenic primordia that may alter ontogenetic allometry and contribute to the evolution of complex nervous systems.</p>
Dataset: Global market drivers for sustainable cephalopod food systems
<p>1. Aquatic food systems are important contributors to global food security to satisfy an intensifying demand for protein-based diets, but global economic growth threatens marine systems. Cephalopod (octopus, squid, cuttlefish) fisheries can contribute to food security; however their sustainable exploitation requires understanding connections between nature's contributions to people (NCP), food system policies and human wellbeing.</p> <p>2. Our global literature review methodology examined what is known about cephalopod food systems, value chains and supply chains and associated market drivers. For analysis, we followed the IPBES conceptual framework to build a map of the links between cephalopod market drivers, NCP and good quality of life (GQL). Then we mapped cephalopod food system dynamics onto IPBES (in)direct drivers of change relating to catch, trade and consumption.</p> <p>3. This research contributes knowledge about key factors relating to cephalopods that can support transitions towards increased food security: the value of new aquatic food species; food safety and authenticity systems; place-based innovations and empowerment of communities; and consumer behaviour, lifestyle and motivations for better health and environmental sustainability along the food value chain. We outline requirements for a sustainable, equitable cephalopod food system policy landscape that values nature's contributions to people, considers UN Sustainable Development Goals and emphasises the role of seven overlapping IPBES (in)direct drivers of change: Economic, Governance, Sociocultural and Socio-psychological, Technological, Direct Exploitation, Natural Processes and Pollution. We present a novel market-based adaptation of the IPBES conceptual framework – our 'cephalopod food system framework', to represent how the cephalopod food system functions and how it can inform processes to improve sustainability and equity of the cephalopod food system.</p> <p>4. This synthesised knowledge provides the basis for diagnosing opportunities (e.g. high demand for products) and constraints (e.g. lack of data about how supply chain drivers link to cephalopod NCP) to be considered regarding the role of cephalopods in transformations towards a resilient and more diversified seafood production system. This social-ecological systems approach could apply to other wild harvest commodities with implications for diverse marine species and ecosystems and can inform those working to deliver marine and terrestrial food security while preserving biodiversity.</p>
FIGURE 2 in New discovery of rhyncholites and conchorhynchs (cephalopod jaw elements) from the Upper Cretaceous Mount Laurel Formation of Delaware
FIGURE 2. Measured morphological characters in rhyncholites and conchorhynchs. Scale bars = 2 mm.
Supplement to: Early Cretaceous climate for the southern Tethyan Ocean: insights from the geochemical and paleoecological analyses of extinct cephalopods
<p>One file (excel) containing XRPD results and Table S1-S6 with details of the clumped isotope, stable carbon isotope, and trace elements analyses that refers to the manuscript.</p>
Supplement to: Early Cretaceous climate for the southern Tethyan Ocean: insights from the geochemical and paleoecological analyses of extinct cephalopods
<p>One file (excel) containing XRPD results and Table S1-S6 with details of the clumped isotope, stable carbon isotope, and trace elements analyses that refers to the manuscript.</p>
Dataset: Global market drivers for sustainable cephalopod food systems
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Data from: Metabolic proxy for cephalopods: Stable carbon isotope values recorded in different biogenic carbonates
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Cephalopod retinal development shows vertebrate-like mechanisms of neurogenesis: Multiple sequence alignments and phylogenetic trees
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Data from: Microstructural and geochemical evidence offers a solution to the cephalopod cameral deposits riddle
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