- Actinopterygii (Wikipedia)
Actinopterygii (/ˌæktɪnɒptəˈrɪdʒiaɪ/; from actino- ‘having rays’, and Ancient Greek πτέρυξ (ptérux) ‘wing, fins’), members of which are known as ray-finned fish or actinopterygians, is a class of bony fish that comprise over 50% of living vertebrate species. They are so called because of their lightly built fins made of webbings of skin supported by radially extended thin bony spines called lepidotrichia, as opposed to the bulkier, fleshy lobed fins of the sister class Sarcopterygii (lobe-finned fish). Resembling folding fans, the actinopterygian fins can easily change shape and wetted area, providing superior thrust-to-weight ratios per movement compared to sarcopterygian and chondrichthyian fins. The fin rays attach directly to the proximal or basal skeletal elements, the radials, which represent the articulation between these fins and the internal skeleton (e.g., pelvic and pectoral girdles).
- Laurel and Hardy (Wikipedia)
Laurel and Hardy were a British-American comedy duo act during the early Classical Hollywood era of American cinema, consisting of Englishman Stan Laurel (1890–1965) and American Oliver Hardy (1892–1957). Starting their career as a duo in the silent film era, they later successfully transitioned to “talkies”. From the late 1920s to the mid-1950s, they were internationally famous for their slapstick comedy, with Laurel playing the clumsy, childlike friend to Hardy’s pompous bully. Their signature theme song, known as “The Cuckoo Song”, “Ku-Ku”, or “The Dance of the Cuckoos” (by Hollywood composer T. Marvin Hatley) was heard over their films’ opening credits, and became as emblematic of them as their bowler hats.