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Early amniotes had a jaw joint composed of the articular (a small bone at the back of the lower jaw) and the quadrate (a small bone at the back of the upper jaw). All non-mammalian amniotes use this system including lizards , crocodilians , dinosaurs (and their descendants the birds ) and therapsids ; so the only ossicle in their middle ears is ...
The larvae are brightly colored, with tufts of hair-like setae. The head is bright red and the body has yellow or white stripes, with a black stripe along the middle of the back. Bright red defensive glands are seen on the hind end of the back. Four white toothbrush-like tufts stand out from the back, and a gray-brown hair pencil is at the hind ...
Larva Thornlike horn on the back. The name death's-head hawkmoth refers to any of three moth species of the genus Acherontia (Acherontia atropos, Acherontia styx and Acherontia lachesis). The former species is found throughout Africa and in Europe, the latter two are Asian; most uses of the common name refer to the African species.
Bone marrow is a semi-solid tissue found within the spongy (also known as cancellous) portions of bones. [2] In birds and mammals, bone marrow is the primary site of new blood cell production (or haematopoiesis). [3] It is composed of hematopoietic cells, marrow adipose tissue, and supportive stromal cells.
The head of a small white butterfly (Pieris rapae). Note the upward pointing labial palpi on both sides of the coiled proboscis. Comparison of moth and butterfly dorsal anatomy. Adult Essex skipper (Thymelicus lineola) Pupa of a sphingid moth Caterpillar of the subfamily Arctiinae Eggs of the buff-tip (Phalera bucephala), a notodontid moth
The white egg at first is elliptical (1.5 mm by 2.1 mm) but becomes more spherical as the larva inside develops. These hatch into white grubs about 18 days after laying. The newly hatched larvae are 8 mm long and grow to a length around 40 mm. Whitish with a brownish-black head, the grubs have conspicuous brown spiracles along the sides of ...
The larvae are black with yellow dots, they have a small spine on their tails and use it as a mimicked head. Before pupating the caterpillar will reach a length of about 70 mm. [5] The adult is brown with light brown stripes down the thorax. The stripes are mimicked on the inner margin of the forewing. [6]
The ossicles (also called auditory ossicles) are three irregular bones in the middle ear of humans and other mammals, and are among the smallest bones in the human body. . Although the term "ossicle" literally means "tiny bone" (from Latin ossiculum) and may refer to any small bone throughout the body, it typically refers specifically to the malleus, incus and stapes ("hammer, anvil, and ...