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Planet Earth III is a 2023 British nature documentary series produced by the BBC Studios Natural History Unit in co-production with The Open University, BBC America, ZDF, France Televisions and NHK. It is the third instalment in the Planet Earth series , with Sir David Attenborough reprising his role as narrator like its predecessors.
Otodus megalodon teeth are the largest of any shark, extinct or living, and are among the most sought after types of shark teeth in the world. This shark lived during the late Oligocene epoch and Neogene period, about 28 to 1.5 million years ago, and ranged to a maximum length of 60 ft. [ 13 ] The smallest teeth are only 1.2 cm (0.5 in) in ...
Ptychodus was a large shark, previously estimated at 10 meters (33 feet) long based on extrapolation from teeth. [ 13 ] [ 14 ] The subadult specimen with the largest vertebra showed that it could reach lengths of 4.3–7.07 m (14.1–23.2 ft), so a 10 m (33 ft) length is possible, but more analysis is required for verification.
Planet Earth II is a natural history documentary series, produced by the BBC as a sequel to the highly successful Planet Earth television series, which aired roughly a decade earlier, in 2006. [3] The series was presented and narrated by Sir David Attenborough with the score composed by Hans Zimmer .
The BBC Natural History Unit has brought together the most astounding stories from the Bafta-winning Planet Earth II and Blue Planet II to create the ultimate escape. The journey is accompanied by a thrilling new musical score, created by renowned composers Hans Zimmer and Jacob Shea , performed by the BBC Concert Orchestra and featuring ...
In 2020, Mammoth Cave announced the discovery of more than 100 shark teeth belonging to at least 10 different species, McClatchy News reported. JP Hodnett, a paleontologist and program coordinator ...
Heterodontiformes is an order of sharks in the superorder Galeomorphii. It includes the bullhead sharks (genus Heterodontus ), and several extinct genera. The earliest known members of the group are from the Early Jurassic ( Toarcian ), around 175 million years ago.
The teeth are thickly layered with typical dentine, but lack enamel (the hypercrystalline outer layering of osteichthyan teeth) or enameloid (an enamel-like form of dentine in shark teeth). [ 10 ] Cladoselache was one of the earliest vertebrates known to have had shark-like tooth replacement, with a series of widely spaced tooth rows constantly ...