Additionally, it is depicted as far larger than it actually was. In the companion book, it was claimed that several large bone fragments from the Romualdo Formation of Brazil possibly indicate that Ornithocheirus may have had a wingspan reaching almost 12 metres and a weight of a hundred kilograms, making it one of the largest known pterosaurs. However, the largest definite Tropeognathus specimens described at the time measured , in terms of wingspan. The specimens which the producers of the program used to justify such a large size estimate were described in 2012 (with the designation MN 6594-V) and were under study by Dave Martill and David Unwin at the time of the production of the series. The final description of the remains found a maximum estimated wingspan of for this large specimen. Unwin stated that he did not believe the higher estimate used by the BBC was likely, and that the producers likely chose the highest possible estimate because it was more "spectacular." Another famously "super-sized" animal in Walking with Dinosaurs is the pliosaur Liopleurodon, described as reaching lengths of 25 metres in the series (but in reality probably only reaching 6.4 metres); the extreme size was based on fragmentary specimens, and the estimate was at the time justifiable extrapolation provided by some of the consultants, who pushed it as scientifically supported. Television and popular culture Walking with Dinosaurs was recognised by several commentators as marking a watershed in television imagery and a scientifically and technologically significant benchmark in television history. Walking with Dinosaurs is often credited for inspiring modern interest in the distant geological past. Scientific papers have credited Jurassic Park and Walking with Dinosaurs as the two major productions inspiring increasing public interest in dinosaurs and other Mesozoic life in the 1990s and 2000s. The success of Walking with Dinosaurs led to the inception of an entirely new genre of documentaries that like Walking with Dinosaurs also recreated past life with computer graphics and were envisioned in the style of nature documentaries. Sequel series The success of Walking with Dinosaurs led to the creation of an entire nature documentary media franchise on prehistoric life, commonly referred to as the Walking with... series. The first sequel series to Walking with Dinosaurs was Walking with Beasts (2001), made by largely the same production team (now organised as the production company Impossible Pictures) and focusing on life in the Cenozoic,