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English: Scale chart of six spinosaurid species compared with a human (Ernst Stromer). References: Spinosaurus: Francisco Bruñén (2019) and Ibrahim et al. (2020) Oxalaia: Kellner et al. (2014) for Oxalaia's remains, most of anatomy based on Spinosaurus via Ibrahim et al. (2020) Suchomimus: Francisco Bruñén (2019) Baryonyx: Scott Hartman (2018)
Although reliable size and weight estimates for most known spinosaurids are hindered by the lack of good material, all known spinosaurids were large animals. [17] The smallest genus known from good material is Irritator , which was between 6 and 8 meters (20 and 26 feet) long and around 1 metric ton (1.1 short tons ; 0.98 long tons ) in weight.
Date/Time Thumbnail Dimensions User Comment; current: 15:50, 12 April 2018: 5,389 × 1,807 (238 KB): PaleoGeekSquared: Simpler, clearer style overall. 04:38, 11 April ...
Precocial mammal species generally have greater adult body weights than altricial mammals as precocial mammals have markedly longer gestation periods than altricial mammals. [35] The neonatal of larger mammals develop relatively more quickly and thus making it more likely that a large mammal would produce a more well-developed neonate as a ...
The estimates were criticized because the skull length estimate was uncertain, and (assuming that body mass increases as the cube of body length) scaling Suchomimus, which was 11 m (36 ft) long and 3.8 t (4.2 short tons) in mass, to the range of estimated lengths of Spinosaurus would produce an estimated body mass of 11.7 to 16.7 t (12.9 to 18. ...
Based on skeletal material from related spinosaurids, the skull of Oxalaia would have been an estimated 1.35 metres (4.4 feet) long; [5] this is smaller than Spinosaurus 's skull, which was approximated at 1.75 m (5 ft 9 in) long by Italian palaeontologist Cristiano Dal Sasso and colleagues in 2005. [20]
You can think of it like your body's age versus your actual age. And while everyone ages at the same rate chronologically, their bodies and tissues may age at faster or slower rates.
As one of my main projects for this year, I've started work on an illustrated size chart featuring the most completely-known tyrannosaurid species, in a similar format to the one Fred Wierum made for the dromaeosauridae article, since I figured I'd be nice to have a good comparison of the "main" tyrannosaur taxa to highlight their differences ...