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A study on the taxonomic status of spinosaurs from the Kem Kem Group is published by Smyth, Ibrahim & Martill (2020), who consider Oxalaia quilombensis, Spinosaurus maroccanus, and Sigilmassasaurus brevicollis to be junior synonyms of Spinosaurus aegyptiacus. [141] Beevor et al. (2020) report a new locality near Tarda on the northern margin of ...
The 2016 study assigned an isolated quadrate (specimen MHNM.KK376) to Sigilmassasaurus brevicollis due to its difference from other specimens assigned to Spinosaurus aegyptiacus, [7] though this was rejected by the 2020 study which noted that these differences in morphology are indicative of variation in skull morphology within a single species ...
For instance, the referral of an isolated quadrate (specimen MHNM.KK376) to Sigilmassasaurus brevicollis, based on its difference from other specimens assigned to Spinosaurus aegyptiacus, [16] was rejected by the 2020 study which noted that these differences in morphology are indicative of variation in skull morphology within a single species. [3]
In 2020, a paper by Robert Smyth and colleagues assessing spinosaurines from the Kem Kem Group did not find the autapomorphies of Oxalaia quilombensis sufficient to warrant a separate taxon, but instead considered them a result of individual variation. The authors thus considered the species a junior synonym of Spinosaurus aegyptiacus.
In April 1944, the holotype of S. aegyptiacus was destroyed during an allied bombing raid in World War II. [16] [17] In 1934, Stromer referred a partial skeleton also from the Bahariya Formation to a new species of Spinosaurus; [18] the specimen has since been alternatively assigned to another African spinosaurid, Sigilmassasaurus. [19]
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He was an assistant professor at the University of Detroit Mercy, where he taught human anatomy, comparative anatomy, and evolution between 2018 and 2020. [13] Ibrahim is a senior lecturer at the University of Portsmouth. [15] In Morocco, he works with a number of Moroccan researchers and students based at Hassan II University. [13]
Ernst Freiherr Stromer von Reichenbach (born on 12th of June, 1871 in Nürnberg, died on 18th of December, 1952 in Erlangen) was a German paleontologist best remembered for his expedition to Egypt, during which the discovery of the first known remains of Spinosaurus was made.