Mystriosaurus

{{short description|Extinct genus of crocodilians}} {{Speciesbox | fossil_range = Early Jurassic {{fossilrange|Toarcian}} | image = Mystriosaurus assigned specimen.jpg | image_caption = Assigned specimen (holotype of the junior synonym ''Steneosaurus brevior'') | genus = Mystriosaurus | parent_authority = Kaup, 1834 | species = laurillardi | authority = Kaup, 1834 | synonyms = {{extinct}}''"Steneosaurus" brevior'' <small>Blake, 1876</small> * ''Engyommasaurus'' {{small|Kaup, 1834}} }} thumb|left|Holotype skull '''''Mystriosaurus''''' is an extinct genus of teleosaurid crocodyliform from the Early Jurassic (Toarcian). Fossil specimens have been found in the Whitby Mudstone of England and Posidonia Shale of Germany. The only known species, ''M. laurillardi'', exceeded {{convert|4|m|ft}} in length.<ref>{{cite web |url=https://www.sachspal.de/mystriosaurus/ |title=Sachs_Mystiosaurus |publisher=Sachs |date= |accessdate=2011-09-12 }}</ref>

A 2019 phylogenetic analysis found ''Mystriosaurus'' to be distinct from ''Steneosaurus''.<ref name="Sachs et al., 2019">{{cite journal |last1=Sachs |first1=S. |last2=Johnson |first2=M.M. |last3=Young |first3=M.T. |last4=Abel |first4=P. |year=2019 |title=The mystery of ''Mystriosaurus'': Redescribing the poorly known Early Jurassic teleosauroid thalattosuchians ''Mystriosaurus laurillardi'' and ''Steneosaurus brevior'' |journal=Acta Palaeontologica Polonica |volume=64 |issue=3 |pages=565–579 |doi=10.4202/app.00557.2018 |url=https://app.pan.pl/archive/published/app64/app005572018.pdf |doi-access=free }}</ref>

== See also == {{Portal|Paleontology}} * List of marine reptiles

== References == {{Reflist}}

==External links== *[https://www.sachspal.de/mystriosaurus-laurillardi/ The mystery of ''Mystriosaurus''] at Sachs Vertebrate Palaeontology Research

Category:Thalattosuchia Category:Prehistoric pseudosuchian genera Category:Prehistoric marine crocodylomorphs Category:Early Jurassic crocodylomorphs Category:Toarcian life Category:Early Jurassic reptiles of Europe Category:Fossils of England Category:Fossils of Germany Category:Fossil taxa described in 1834 Category:Taxa named by Johann Jakob Kaup