Amphisauropus

{{Short description|Trace fossil}} {{Ichnobox | fossil_range = {{fossil range|Permian|Triassic|Permian-Triassic}} | image = | image_caption = | taxon = Amphisauropus | authority = Haubold 1970 | type_ichnospecies = ''A. latus'' | type_ichnospecies_authority = Haubold 1970 | subdivision_ranks = Ichnospecies | subdivision = *''A. kablikae'' <small>(Geinitz and Deichmüller 1982)</small> *''A latus'' <small>(Haubold 1970; type)</small> }}

'''''Amphisauropus''''' is an ichnogenus commonly found in assemblages of trace fossils dating from the Permian<ref name="VoigtEtal2007">{{cite journal |last1=Voigt |first1=Sebastian |last2=Berman |first2=David S |last3=Henrici |first3=Amy C. |title=First well-established track-trackmaker association of paleozoic tetrapods based on Ichniotherium trackways and diadectid skeletons from the Lower Permian of Germany |journal=Journal of Vertebrate Paleontology |date=12 September 2007 |volume=27 |issue=3 |pages=553–570 |doi=10.1671/0272-4634(2007)27[553:FWTAOP]2.0.CO;2|s2cid=131256847 }}</ref> to the Triassic.<ref name=PtaszynskiEtal2004>{{cite journal |first1=T. |last1=Ptaszyński |first2=G. |last2=Niedźwiedzki |year=2004 |title=Late Permian vertebrate tracks from the Tumlin Sandstone, Holy Cross Mountains, Poland |journal=Acta Palaeontologica Polonica |volume=49 |number=2 |pages=289–320 |url=http://yadda.icm.edu.pl/yadda/element/bwmeta1.element.agro-article-4525ea34-65e7-45d6-a14e-1331ce5c5d54 |access-date=19 January 2022}}</ref> The tracks have been considered to be made by amphibians<ref name=PtaszynskiEtal2004/> or by seymouriamorphs.<ref name=MarMujBer17/> The genus has been found in Europe,<ref name=PtaszynskiEtal2004/><ref name="VoigtEtal2007"/> Morocco,<ref>{{cite journal |last1=Hminna |first1=Abdelkbir |last2=Voigt |first2=Sebastian |last3=Saber |first3=Hafid |last4=Schneider |first4=Jörg W. |last5=Hmich |first5=Driss |title=On a moderately diverse continental ichnofauna from the Permian Ikakern Formation (Argana Basin, Western High Atlas, Morocco) |journal=Journal of African Earth Sciences |date=June 2012 |volume=68 |pages=15–23 |doi=10.1016/j.jafrearsci.2012.03.011|bibcode=2012JAfES..68...15H }}</ref> and North America.<ref>{{cite journal |last1=Lucas |first1=Spencer G. |last2=Lerner |first2=Allan J. |last3=Haubold |first3=Hartmut |title=First record of Amphisauropus and Varanopus in the Lower Permian Abo Formation, central New Mexico |journal=Hallesches Jahrb. Geowiss B |date=2001 |volume=29 |pages=69–78 |citeseerx= 10.1.1.503.8731}}</ref>

==Description== The foot impressions show five digits and clear palm prints, though the fifth digit is not always impressed. The digits are short and broad with rounded tips. The pes (rear foot) is longer than wide while the manus (front foot) is wider than long. A continuous tail impression is also present. The animal may have had a trunk length of about {{convert|12|cm||sp=us}} and likely moved quite slowly.<ref name=MarMujBer17>{{cite journal |last1=Marchetti |first1=Lorenzo |last2=Mujal |first2=Eudald |last3=Bernardi |first3=Massimo |title=An unusual Amphisauropus trackway and its implication for understanding seymouriamorph locomotion |journal=Lethaia |date=January 2017 |volume=50 |issue=1 |pages=162–174 |doi=10.1111/let.12184|bibcode=2017Letha..50..162M }}</ref>

==References== {{Reflist}}

Category:Vertebrate trace fossils