Markham's frog

{{Short description|Extinct species of amphibian}}

{{Use New Zealand English|date=July 2024}}

{{speciesbox

| fossil_range= Holocene

| name = Leiopelma markhami

| image = Leiopelma markhami (AM LH1994) (cropped).jpg

| image_caption = Fossilised bone of a markham's frog.

| status = EX

| status_system = NZTCS

| status_ref =

| taxon = Leiopelma markhami

| authority = Worthy, 1987

| extinct = unknown

| range_map =

| range_map_caption =

}}

Markham's frog (Leiopelma markhami) is one of three extinct New Zealand frog species, the others being the Aurora frog (Leiopelma auroraensis) and Waitomo frog (Leiopelma waitomoensis).{{Cite book|url=https://www.doc.govt.nz/Documents/science-and-technical/nztcs25entire.pdf|title=Conservation status of New Zealand amphibians, 2017|last1=Burns|first1=Rhys J.|last2=Bell|first2=Ben D.|last3=Haigh|first3=Amanda|last4=Bishop|first4=Phillip J.|last5=Easton|first5=Luke|last6=Wren|first6=Sally|last7=Germano|first7=Jennifer|publisher=Department of Conservation|date=August 2018|isbn=9781988514680|location=Wellington, New Zealand|pages=5|oclc=1052880982}} Subfossil bones used to describe the species were discovered at Honeycomb Hill Cave, South Island, New Zealand, but it once occurred on both South and North Islands. It is estimated that it grew between 50 and 60 mm from snout to vent and it appears to have been a very robust animal.{{cite journal |last1=Worthy |first1=Trevor H.|title=Osteology of Leiopelma (Amphibia: Leiopelmatidae) and descriptions of three new subfossil Leiopelma species|journal=Journal of the Royal Society of New Zealand |date=1987 |volume=17 |issue=3 |pages=201–251 |doi=10.1080/03036758.1987.10418160 }}{{cite journal |last1=Worthy |first1=Trevor H. |title=Palaeoecological information concerning members of the frog genus Leiopelma: Leiopelmatidae in New Zealand|journal=Journal of the Royal Society of New Zealand |date=1987 |volume=17 |issue=4 |pages=409–420 |doi=10.1080/03036758.1987.10426482 |doi-access=free }}