Phylogenetic tree showing relations among Ambystoma species and outgroups: For example, the sister taxon to Ambystoma macrodactylum is Ambystoma laterale, meaning they share a single common ancestor and are each other's closest living relatives.
Archimedes showed that the surface area of a sphere is exactly four times the area of a flat disk of the same radius, and the volume enclosed by the sphere is exactly 2/3 of the volume of a cylinder of the same height and radius.
Integration can be thought of as measuring the area under a curve, defined by f(x), between two points (here a and b).
The area between two graphs can be evaluated by calculating the difference between the integrals of the two functions
3-lobed larval phase of Argyrotheca cordata, 180μm, lateral view, top apical lobe with long cilia, mid-section mantel lobe, with ventral cilia (left) and 4 bundles of setae (2 visible), bottom pedical lobe, without cilia
Skulls of dire wolf (C. dirus), gray wolf (C. lupus), eastern wolf (C. lycaon), red wolf (C. rufus), coyote (C. latrans), African golden wolf (C. anthus), golden jackal (C. aureus) and black-backed jackal (C. mesomelas)
Diagram of a wolf skull with key features labelled
Dentition of a wolf showing functions of the teeth.
Comparative image of the red wolf (C. rufus) & the coyote (C. latrans). A 2016 genetic study of canid scats found that despite high coyote density inside the Red Wolf Experimental Population Area (RWEPA), hybridization occurs rarely (4% are hybrids).
Skulls of North American Canis, with red wolf in the center
Larvae of chitons: First image is the trochophore, second is in metamorphosis, third is an immature adult.
Separate plates from Matthevia, a Late Cambrian polyplacophoran from the Hellnmaria Member of the Notch Peak Limestone, Steamboat Pass, southern House Range, Utah are shown with a US one-cent coin (19 mm in diameter).
Bobcat in urban surroundings: The species' range does not seem to be limited by human populations, as long as it can still find a suitable habitat.
The bobcat population has seen decline in the American Midwest, but is generally stable and healthy.
A Shiva Lingam near the Radhe Krishna Temple in Rajbira
A 10th-century four-headed stone lingam (Mukhalinga) from Nepal
Lingodbhava Shiva: God Shiva appears as in an infinite Linga fire-pillar, as Vishnu as Varaha tries to find the bottom of the Linga while Brahma tries to find its top. This infinite pillar conveys the infinite nature of Shiva.
Screech owls can easily avoid detection during the day due to their effective camouflage among the bark of deciduous trees.
Juvenile eastern screech owl
Fuertes portrait of a red and gray morph screech owl
Fossil valves of Ostrea forskali from Pliocene of Italy
A lingual (tongue-side) view of a lateral O. obliquus.
Illustration of articulated vertebrae of P. toliapicus
Two cladograms proposed for Panthera. The upper one is based on phylogenetic studies by Johnson et al. (2006), and by Werdelin et al. (2010). The lower cladogram is based on a study by Davis et al. (2010) and by Mazák et al. (2011).