Mexichelys

{{Short description|Extinct genus of turtles}}

{{Italic title}}

{{Automatic taxobox

| name = Mexichelys

| fossil_range = Late Campanian

| taxon = Mexichelys

| authority = Parham & Pyenson, 2010

| subdivision_ranks = Species

| subdivision =

• M. coahuilaensis (Brinkman et al., 2009) (type)

| synonyms = Euclastes coahuilaensis Brinkman et al., 2009

}}

Mexichelys is an extinct monotypic genus of sea turtle which lived in Mexico during the Cretaceous. The only species is Mexichelys coahuilaensis.{{Cite journal|author=James F. Parham|author2-link=Nicholas Pyenson|author2=Nicholas D. Pyenson|year=2010|title=New Sea Turtle from the Miocene of Peru and the Iterative Evolution of Feeding Ecomorphologies since the Cretaceous|journal=Journal of Paleontology|volume=84|issue=2|pages=231–247|doi=10.1666/09-077R.1|bibcode=2010JPal...84..231P |s2cid=62811400}} Mexichelys was erected in 2010 as a replacement name for Euclastes coahuilaensis, a species named in 2009.{{Cite journal|last=Brinkman|first=D.|author2=Aquillon-Martinez, M.C. |author3=Dávila, C.A.L. |author4=Jamniczky, H. |author5=Eberth, D.A. |author6= Colbert, M. |year=2009|title=Euclastes coahuilaensis sp. nov., a basal cheloniid turtle from the late Campanian Cerro del Pueblo Formation of Coahuila State, Mexico|journal=PaleoBios|volume=28|issue=3|pages=76–88|url=http://www.ucmp.berkeley.edu/science/paleobios/abstracts_26to.php}}

Cladogram based on Lynch and Parham (2003){{cite journal|last=Lynch |first=S.C. |author2=Parham, J.F. |year=2003 |title=The first report of hard-shelled sea turtles (Cheloniidae sensu lato) from the Miocene of California, including a new species (Euclastes hutchisoni) with unusually plesiomorphic characters |journal=PaleoBios |volume=23 |issue=3 |pages=21–35 |url=http://www.seaturtle.org/PDF/Lynch_2003_PaleoBios.pdf }}{{dead link|date=June 2017 |bot=InternetArchiveBot |fix-attempted=yes }} and Parham and Pyenson (2010):

{{clade| style=font-size:100%;line-height:85%

|label1=Cheloniidae sensu lato

|1={{clade

|1=Toxochelys

|2={{clade

|1=Mexichelys

|2={{clade

|1=Lophochelyinae

|2={{clade

|1=Euclastes

|2={{clade

|1=Argillochelys

|2=Eochelone

|3={{clade

|1={{clade

|1=Erquelinnesla

|2=Pacifichelys}}

|2={{clade

|1=Puppigerus

|2=Cheloniidae sensu stricto

}} }} }} }} }} }} }} }}