Evolution of cetaceans decreasing. Other historical climate events can be correlated and matched with the genome history of the Yangtze River dolphin as well. This shows how global and local climate change can drastically affect a genome, leading to changes in fitness, survival, and evolution of a species. The European population of common dolphins ("Delphinus delphis") in the Mediterranean have differentiated into two types: eastern and western. According to a 2012 study, this seems to be due to a recent bottleneck as well, which drastically decreased the size of the eastern Mediterranean population. Also, the lack of population structure between the western and
Creature from the Black Lagoon Colgate Comedy Hour" aired prior to the film's release. The appearance is commonly known as "Abbott and Costello Meet the Creature from the Black Lagoon". Ben Chapman reprised his role as the Gill-Man for the program. "Creature from the Black Lagoon" generated two sequels: "Revenge of the Creature" (1955), which was also filmed and released in 3D in hopes of reviving the format, and "The Creature Walks Among Us" (1956), filmed in 2D. The creature, also known as the Gill-man, is usually counted among the classic Universal Monsters. A geology expedition in the Amazon uncovers fossilized evidence (a skeletal hand