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Dataset results
17 results for “<20 million years”
Fig. 9 in Acropyga and Azteca Ants (Hymenoptera: Formicidae) with Scale Insects (Sternorrhyncha: Coccoidea): 20 Million Years of Intimate Symbiosis
Fig. 9. Electromyrmococcus inclusus Williams and Agosti, new species a. Adult female, dorsal aspect. b. Cephalothorax, ventral aspect.
Fig. 10. Electromyrmococcus reginae Williams, new species a in Acropyga and Azteca Ants (Hymenoptera: Formicidae) with Scale Insects (Sternorrhyncha: Coccoidea): 20 Million Years of Intimate Symbiosis
Fig. 10. Electromyrmococcus reginae Williams, new species a. Adult female, dorsolateral aspect. Arrow points to area held by ant with mandibles. b. Posterior segment, dorsal aspect. c. Antenna.
Fig. 5. a in Acropyga and Azteca Ants (Hymenoptera: Formicidae) with Scale Insects (Sternorrhyncha: Coccoidea): 20 Million Years of Intimate Symbiosis
Fig. 5. a. Acropyga sp. 1, gyne with mealybug between mandibles in amber from the Dominican Republic (Frankfurt collection piece, detail). b. Acropyga sp. 1, alate gyne and male in Dominican amber (Frankfurt collection piece). c. Acropyga sp. 2, dealate gyne and mealybug in Miocene amber from the Dominican Republic (Harvard collection piece, AMNH DR10228). d. Acropyga sp. 2, alate gyne and mealybug in Miocene amber from the Dominican Republic (Harvard collection piece, AMNH DR14403).
Fig. 4 in Acropyga and Azteca Ants (Hymenoptera: Formicidae) with Scale Insects (Sternorrhyncha: Coccoidea): 20 Million Years of Intimate Symbiosis
Fig. 4. Scanning electron micrographs (40–50X) of an Acropyga gyne from Saül, French Guiana, carrying a mealybug (collected by C. Johnson). a. Frontal view. b. Oblique lateral view.
Fig. 3 in Acropyga and Azteca Ants (Hymenoptera: Formicidae) with Scale Insects (Sternorrhyncha: Coccoidea): 20 Million Years of Intimate Symbiosis
Fig. 3. Alate female of a South African Acropyga carrying a Eumyrmococcus mealybug (redrawn from Prins [1982] by Williams [1993]).
Fig. 8. Electromyrmococcus abductus Williams, new species a in Acropyga and Azteca Ants (Hymenoptera: Formicidae) with Scale Insects (Sternorrhyncha: Coccoidea): 20 Million Years of Intimate Symbiosis
Fig. 8. Electromyrmococcus abductus Williams, new species a. Adult female, ventral aspect. Arrows point to area held by ant with mandibles. b. Posterior segments, dorsal aspect. c. Posterior segments, ventral aspect. d. Anal area. e. Claw.
Fig. 1 in Acropyga and Azteca Ants (Hymenoptera: Formicidae) with Scale Insects (Sternorrhyncha: Coccoidea): 20 Million Years of Intimate Symbiosis
Fig. 1. World distribution of Acropyga subgenera (from Emery, 1925; Menozzi, 1936; Weber, 1944; Prins, 1982; Terayama, 1985; Williams, 1998).
Fig. 7 in Acropyga and Azteca Ants (Hymenoptera: Formicidae) with Scale Insects (Sternorrhyncha: Coccoidea): 20 Million Years of Intimate Symbiosis
Fig. 7. Azteca alpha Wilson workers with mealybugs in Dominican amber (Larimer piece, AMNH DR14–955). A = Azteca alpha Wilson; M = mealybug; C = Cecidomyiidae.
Fig. 2 in Acropyga and Azteca Ants (Hymenoptera: Formicidae) with Scale Insects (Sternorrhyncha: Coccoidea): 20 Million Years of Intimate Symbiosis
Fig. 2. Acropyga from Saül, French Guiana. An alate gyne carrying a mealybug while in copula.
Figure 4 in The first fossil spider cricket (Orthoptera: Gryllidae: Phalangopsinae): 20 million years of troglobiomorphosis or exaptation in the dark?
Figure 4. Cladogram of amphiacustine relationships (50% majority rule consensus tree of 28 equally parsimonious topologies: tree length, L = 29; consistency index, CI = 0.90; retention index, RI = 0.91). The percentage support for each node is given within an oval. Synapomorphies are indicated by numbers 1–20, and are explained in Table 2.
Figure 3 in The first fossil spider cricket (Orthoptera: Gryllidae: Phalangopsinae): 20 million years of troglobiomorphosis or exaptation in the dark?
Figure 3. Schematic reconstructions of the legs of Araneagryllus dylani gen. et sp. nov. showing the tibial armature and the distribution of the colour pattern. A, prothoracic leg. B, mesothoracic leg. C, metathoracic leg. Scale bar: 3 mm.
Figure 2 in The first fossil spider cricket (Orthoptera: Gryllidae: Phalangopsinae): 20 million years of troglobiomorphosis or exaptation in the dark?
Figure 2. Araneagryllus dylani gen. et sp. nov., camera lucida drawings of holotype AMNH DR-12-32. A, general habitus of specimen. Scale bar: 3 mm. B, left lateral view of head. Scale bar: 1 mm.
Figure 1 in The first fossil spider cricket (Orthoptera: Gryllidae: Phalangopsinae): 20 million years of troglobiomorphosis or exaptation in the dark?
Figure 1. Araneagryllus dylani gen. et sp. nov., photomicrograph of holotype AMNH DR-12-32. Scale bar: 3 mm.
Figure 5 in The first fossil spider cricket (Orthoptera: Gryllidae: Phalangopsinae): 20 million years of troglobiomorphosis or exaptation in the dark?
Figure 5. Phylogenetic inference assessment of Amphiacustina. Life histories are mapped onto the phylogeny in blue (strict troglobitic) and green (cavicolous/straminicolous epigean), and the distributions of the supposedly troglobiomorphic characters are shown on the right. Key: eyes large (+) or reduced (-); ocelli present (+) or absent/reduced (-); stridulatory apparatus (stridulum) present and functional (+) or absent/non-functional (-); auditory tympana present (+) or absent (-); in all cases, the ± symbol indicates polymorphism.
Figure 20 in Shell features and anatomy of the springsnail genus Radomaniola (Caenogastropoda: Hydrobiidae) show a different pace and mode of evolution over five million years
Figure 20. Shells, operculum and radulae of Radomaniola szarowskae sp. nov. A, B, holotype (MNCN 15.05/200167). C–J, paratypes (UGSB 18556). C, D, shells. E, F, operculum (E, inner side; F, outer side). G, protoconch. H, portion of radula ribbon. I, central radular teeth. J, outer marginal teeth.
Fig. 6 in Acropyga and Azteca Ants (Hymenoptera: Formicidae) with Scale Insects (Sternorrhyncha: Coccoidea): 20 Million Years of Intimate Symbiosis
Fig. 6. Mealybug (detail) in amber (Harvard collection piece, AMNH DR14403).
Single-cell multiomic comparison of mouse and rat spermatogenesis reveal gene regulatory networks conserved for over 20 million years.
GEO Series GSE268104. Mus musculus; Rattus norvegicus. 70 samples. Type: Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing.
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
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.