Name: Dacentrurus ‭(‬Very sharp tail‭)‬.
Phonetic: Da-sen-tru-rus.
Named By: Frederic Augustus Lucas‭ ‬-‭ ‬1902.
Synonyms: Omosaurus armatus.
Classification: Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Ornithischia,‭ ‬Stegosauria,‭ ‬Stegosauridae.
Species: D.‭ ‬armatus‭ (‬type‭)‬.
Diet: Herbivore.
Size: About 7-‬8‭ ‬meters long.
Known locations: England,‭ ‬France,‭ ‬Portugal and Spain.
Time period: Kimmeridgian of the Jurassic.
Fossil representation: Several individuals.

Dacentrurus by Prehistoric Wildlife

Dacentrurus was originally named Omosaurus armatus in‭ ‬1875‭ ‬by the famous British palaeontologist Richard Owen,‭ ‬however the genus name of Omosaurus was already used to name another animal.‭ ‬This led to the‭ ‬1902‭ ‬renaming by Frederic Lucas,‭ ‬although the species name was still retained in creating the type species of the new genus,‭ ‬as is standard procedure for such a‭ ‬renaming.

Dacentrurus armatus reconstruction at the Natural History Museum in London, UK.

Unlike more famous genera that have plates all the way down the back to a spiked‭ ‘‬thagomizer‭’ ‬on the end of the tail,‭ ‬Dacentrurus had eight pairs of triangular plates that ran from the neck to the posterior end of the sacrum‭ (‬hip‭)‬,‭ ‬which were then followed by four pairs of large spikes that ran down to the thagomizer‭ (‬four more pairs of spikes that pointed to the sides‭)‬.‭ ‬This arrangement is very similar to the African stegosaur Kentrosaurus,‭ ‬though analysis suggests that the closest relative of Dacentrurus was Miragaia.‭ ‬Another study has also revealed that Dacentrurus is one of if not the closest relative of the North American Hesperosaurus.

1.Dacentrurus 2.Lexovisaurus 3.Huayangosaurus 4.Wuerhosaurus 5.Gigantspinosaurus – by Kawasaki Satoshi

Dacentrurus lived in the Kimmeridgian area of the late Jurassic period,‭ ‬the heyday for the stegosaurs where they seem to have been at their most successful.‭ ‬Aside from being discovered in England,‭ ‬further remains have been in France and Spain with a particularly large number coming from Portugal.‭ ‬Study of late Jurassic ecosystems in North America has brought the strong suggestion that stegosaurs regularly came into conflict with theropod dinosaurs like Allosaurus.‭ ‬This predator/prey interaction may have also happened in late Jurassic Europe,‭ ‬although most of the large theropods such as Dubreuillosaurus and Poekilopleuron are so far only known from earlier in the Jurassic.

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