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171 results for “shell morphology”
Figure 8 in Anatomy, shell morphology, and microstructure of the living fossil Pulvinites exempla (Hedley, 1914) (Mollusca: Bivalvia: Pulvinitidae)
Figure 8. Nacre in Pulvinites exempla (scanning electron microscopy; AMS C.129659, 45.2 mm). A, cross-section of shell showing the inner nacreous layer containing irregular pockets (arrows) (scale bar = 10 µm). B, magnified lateral view of nacreous tablets showing the intercrystalline organic matrix (white arrows) and the tuberculate surface (scale bar = 3 µm). C, rhomboid tablets of the outer surface of the nacreous layer (scale bar = 20 µm). Inset: a magnified single tablet showing the tuberculate surface (scale bar = 1 µm). D, magnified surface of a nacre tablet showing sinistral spiral growth (scale bar = 2.5 µm). (A) and (B) were prepared by polishing and etching sections of epoxy-embedded left valve; (C) and (D) were prepared by vertical mechanical fracture of a right valve.
Supplementary material 1 from: Southgate PC, Militz TA (2023) A multivariate approach to morphological study of shell form in cowries (Gastropoda, Cypraeidae): a case study with Umbilia armeniaca (Verco, 1912). ZooKeys 1158: 69-89. https://doi.org/10.3897/zookeys.1158.98868
Annotated code pertaining to the multivariate approach
Morphology of the limb, shell, and head explain the variation in performance and ecology across 14 turtle taxa (12 species)
Open the record for dataset details and reuse information.
Quantifying shell outline variability in extant and fossil Laqueus (Brachiopoda: Terebratulida): are outlines good proxies for long-looped brachidial morphology and can they help us characterize species?
Open the record for dataset details and reuse information.
Fig. 5 in Systematics and phylogenetic species delimitation within Polinices s.l. (Caenogastropoda: Naticidae) based on molecular data and shell morphology
Fig. 5 Pictures of type specimens and protoconchs of a Nerita mammilla Linnaeus, 1758 [ZMUU#386] b Mamma albula Chemnitz, 1758 [nonbinomial, ZMUC] and c Natica pyriformis Recluz, 1844 [BMNH#1991089.1]. For further information see Table 1. Bars 0.5 cm
Fig. 3 in Systematics and phylogenetic species delimitation within Polinices s.l. (Caenogastropoda: Naticidae) based on molecular data and shell morphology
Fig. 3 Phylogram obtained through Bayesian inference based on the COI gene fragment. Posterior probabilities are indicated at the nodes. Branches supported by values>0.95 are indicated in bold. Polytomies are due to the cut-off value specified for the consensus tree (50 % used as the default value in MrBayes)
Fig. 2 in Systematics and phylogenetic species delimitation within Polinices s.l. (Caenogastropoda: Naticidae) based on molecular data and shell morphology
Fig. 2 Phylogram obtained through Bayesian inference based on the concatenated data set (COI, 16S, 18S, 28S, H3) for a reduced number of taxa. Posterior probabilities are indicated at the nodes. Branches supported by values>0.95 are indicated in bold. Polytomies are due to the cut-off value specified for the consensus tree (50 % used as the default value in MrBayes)
Fig. 6 in Systematics and phylogenetic species delimitation within Polinices s.l. (Caenogastropoda: Naticidae) based on molecular data and shell morphology
Fig. 6 Analysed type specimens or figured type specimens of taxa that could potentially represent Polinices sp. 2, Polinices sp. 3 or Polinices sp. 4. a Natica controversa Pritchard & Gatliff, 1913 [MV#F7695]. b Natica dubia Récluz, 1844 [BMNH#1991085] (0 P. constanti Huelsken and Hollmann, herein; replacement name). c Natica deiodosa Reeve, 1855 [BMNH#1991069]. d Uber mellosum Hedley, 1924 [AMS#C20058]. e Natica phytelephas Reeve 1855 [BMNH#1991096]. f Polinices putealis Garrard, 1961 [AMS#C63344]. g Natica jukesii Reeve, 1855 [BMNH#1991067]. (h) Polinices tawhitirahia Powell, 1965 [Auckland Museum #71242]. i Natica vavaosi Reeve, 1855 [figured type]. j Natica galactites Philippi, 1851 [figured type]. k Natica cygnea Philippi, 1850 [figured type]. l Natica virginea Philippi, 1850 [figured type]. For further information see Table 1. Bars 0.5 cm
Figure 5 in Tracking parallel adaptation of shell morphology through geological times in the land snail genus Pupilla (Gastropoda: Stylommatophora: Pupillidae)
Figure 5. Thin-plate splines illustrating (theoretical) transitions in shape, frontal view. A, fossil P. loessica → extant P. loessica. B, fossil P. pratensis (including P. m. densegyrata) → extant P. pratensis. C, fossil P. pratensis (including P. m. densegyrata) → extant P. alpicola. D, extant P. pratensis → P. alpicola. E, extant P. loessica→ P. alpicola. F, fossil P. muscorum → extant P. muscorum.
Figure 3 in Tracking parallel adaptation of shell morphology through geological times in the land snail genus Pupilla (Gastropoda: Stylommatophora: Pupillidae)
Figure 3. Landmarks for frontal (left) and lateral (right) aspects in geometric morphometric analyses.
Figure 2. Localities. A in Tracking parallel adaptation of shell morphology through geological times in the land snail genus Pupilla (Gastropoda: Stylommatophora: Pupillidae)
Figure 2. Localities. A, Eurasia with insets of detailed maps. B, European samples. C, Asian samples. Due to the large scale, single symbols may stand for several adjacent localities. In (B), 1 indicates the type locality of P. loessica (Předmostí at Přerov, Czech Republic), and 2 the type locality of Pupa muscorum var. pratensis (Dinkelscherben near Augsburg, Germany).
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.