Batrachichnus

{{Short description|Trace fossil}}

{{Ichnobox

| fossil_range = {{fossil range|Mississippian|Triassic|Mississippian-Triassic}}

| image =

| image_caption =

| taxon = Batrachichnus

| authority = Woodworth 1900

| type_ichnospecies = {{extinct}}B. plainvillensis

| type_ichnospecies_authority = Woodworth 1900

| subdivision_ranks = Ichnospecies

| subdivision =

• B. celer (Matthew 1903)
• B. jacksonensis (Butts 1891)
• B. plainvillensis (Woodworth 1900; type)
• B. obscurus (Gilmore 1927)
• B. salamandroides (Geinitz 1861)

}}

Batrachichnus is an amphibian ichnogenus commonly found in assemblages of ichnofossils dating to the Mississippian{{cite journal |last1=Lucas |first1=Spencer G. |last2=Fillmore |first2=David L. |last3=Simpson |first3=Edward L. |title=Amphibian Body Impressions from the Mississippian of Pennsylvania, USA |journal=Ichnos |date=31 August 2010 |volume=17 |issue=3 |pages=172–176 |doi=10.1080/10420940.2010.502488|bibcode=2010Ichno..17..172L |s2cid=140624556 }} to Triassic{{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}} of North America,{{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}} South America,{{cite journal |last1=Melchor |first1=Ricardo Néstor |last2=Swithin Sarjeant |first2=William Antony |title=Small Amphibian and Reptile Footprints from the Permian Carapacha Basin, Argentina |journal=Ichnos |date=January 2004 |volume=11 |issue=1–2 |pages=57–78 |doi=10.1080/10420940490428814|bibcode=2004Ichno..11...57M |hdl=11336/81750 |hdl-access=free }} and Europe. The animal producing the tracks was likely a temnospondyl. B. slamandroides is the smallest known tetrapod footprint, produced by an animal with an estimated body length of just {{convert|8|mm||sp=us}}{{cite journal |last1=Stimson |first1=Matt |last2=Lucas |first2=Spencer G. |last3=Melanson |first3=Gloria |title=The Smallest Known Tetrapod Footprints: Batrachichnus Salamandroides from the Carboniferous of Joggins, Nova Scotia, Canada |journal=Ichnos |date=July 2012 |volume=19 |issue=3 |pages=127–140 |doi=10.1080/10420940.2012.685206|bibcode=2012Ichno..19..127S |s2cid=55243441 }}