वेब3 दिवसांपूर्वी · Diplodocus sp. scale shapes. These scale shapes include (1) rectangular, (2) ovoid and dome, (3) arching scale rows, (4) globular. Skin. The discovery of partial diplodocid skin impressions in …

वेब1 दिवसापूर्वी · The specimen consists of three articulated cervical vertebrae with associated ribs, three dorsal vertebrae, thirteen ribs, a right forelimb including a partial humerus, ulna, and radius, and one dermal plate.

वेब3 दिवसांपूर्वी · All catfish other than members of the Malapteruridae (electric catfish), possess a strong, hollow, bony, leading spine-like ray on their dorsal and pectoral fins. As a defense, these spines may be locked …

वेब3 दिवसांपूर्वी · Dolphins have two pectoral flippers, each containing four digits, a boneless dorsal fin for stability, and a fluke for propulsion. Although dolphins do not possess external hind limbs, some possess …

वेब2 दिवसांपूर्वी · The dorsal surface of the turtle's head has a single pair of prefrontal scales. Its carapace is composed of five central scutes flanked by four pairs of lateral scutes. Underneath, the green turtle has …