Leptopleuroninae

{{Short description|Extinct subfamily of reptiles}}

{{Automatic taxobox

| fossil_range = Early — Late Triassic

| taxon = Leptopleuroninae

| authority = Ivakhnenko, 1979

| subdivision_ranks = Genera

| subdivision =

• {{extinct}}Basileosaurus?
• {{extinct}}Cornualbus{{cite journal |last1=Silva-Neves |first1=E. |last2=Da-Rosa |first2=Á. A. S. |last3=Modesto |first3=S. P. |last4=Dias-da-Silva |first4=S. |title=Cornualbus primus gen. et sp. nov.: a new procolophonid (Reptilia: Parareptilia) from Upper Triassic of South America, first tetrapod from the Passo das Tropas Member of the Santa Maria Supersequence |journal=Journal of Systematic Palaeontology |date=2024 |volume=22 |issue=1 |doi=10.1080/14772019.2024.2373116}}
• {{extinct}}Hwiccewyrm
• {{extinct}}Hypsognathus
• {{extinct}}Koiloskiosaurus
• {{extinct}}Leptopleuron
• {{extinct}}Libognathus
• {{extinct}}Mandaphon
• {{extinct}}Neoprocolophon
• {{extinct}}Pentaedrusaurus
• {{extinct}}Phonodus
• {{extinct}}Sclerosaurus
• {{extinct}}Scoloparia
• {{extinct}}Soturnia
• {{extinct}}Threordatoth

}}

Leptopleuroninae is an extinct subfamily of procolophonid reptiles.{{Cite journal | last1 = Cisneros | first1 = J. C. | title = Phylogenetic relationships of procolophonid parareptiles with remarks on their geological record | doi = 10.1017/S1477201907002350 | journal = Journal of Systematic Palaeontology | volume = 6 | issue = 3 | pages = 345–366 | year = 2008 | s2cid = 84468714 }} It is defined as all taxa closer to Leptopleuron lacertinum than to Procolophon trigoniceps.{{Cite journal | last1 = Cisneros | first1 = J. C. | title = Phylogenetic relationships of procolophonid parareptiles with remarks on their geological record | doi = 10.1017/S1477201907002350 | journal = Journal of Systematic Palaeontology | volume = 6 | issue = 3 | pages = 345–366 | year = 2008 | s2cid = 84468714 }} The oldest member of Leptopleuroninae is Phonodus dutoitorum from the Induan age of the Early Triassic. It is the only procolophonid group that survived into the Late Triassic.{{Cite journal |last1=Butler |first1=R. J. |last2=Meade |first2=L. E. |last3=Cleary |first3=T. J. |last4=McWhirter |first4=K. T. |last5=Brown |first5=E. E. |last6=Kemp |first6=T. S. |last7=Benito |first7=J. |last8=Fraser |first8=N. C. |year=2023 |title=Hwiccewyrm trispiculum gen. et sp. nov., a new leptopleuronine procolophonid from the Late Triassic of southwest England |journal=The Anatomical Record |doi=10.1002/ar.25316 |pmid=37735997 |doi-access=free}}