Acuetzpalin

Acuetzpalin; Temporal range: Late Jurassic, Kimmeridgian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	†Ichthyosauria
Family:	†Ophthalmosauridae
Subfamily:	†Platypterygiinae
Genus:	†Acuetzpalin; Barrientos-Lara, Alvarado-Ortega, & Fernández, 2020
Type species
	†Acuetzpalin carranzai; Barrientos-Lara, Alvarado-Ortega, & Fernández, 2020

Acuetzpalin (meaning "water lizard" in Classical Nahuatl) is an extinct genus of platypterygiine ophthalmosaurid ichthyosaur found in the Kimmeridgian[1][2] La Casita Formation in Mexico.[3] It is known from a partial skeleton (missing the limbs), of which the skull is surprisingly well preserved. It was the first ichthyosaur described in 2020 and the first new ichthyosaur genus described since 2017 (both Gengasaurus[4] and Keilhauia[5] were described in 2017).

Classification

A phylogenetic analysis conducted in 2020 reveals that Acuetzpalin is a member of the subfamily Platypterygiinae and is located among the most-derived platypterygiines.[3]

References

Zell, P., Stinnesbeck, W. (2016). "Salinites grossicostatum (Imlay, 1939) and S. finicostatum sp. nov. from the latest Tithonian (Late Jurassic) of northeastern Mexico". Boletín de la Sociedad Geológica Mexicana. 68 (2): 305–311. doi:10.18268/BSGM2016v68n2a8.CS1 maint: multiple names: authors list (link)
Ocampo-Díaz., Yam Zul Ernesto (2014). "Procedencia de la Formación La Casita y la Arcosa Patula: implicaciones para la evolución tectono-magmática del NE de México entre el Carbonífero y el Jurásico" (PDF). Revista Mexicana de Ciencias Geológicas. 31: 45–63.
Jair Israel Barrientos Lara; Jesús Alvarado Ortega; Marta S.Fernández (2020). "Acuetzpalin carranzai gen et sp. nov. A new ophthalmosauridae (Ichthyosauria) from the Upper Jurassic of Durango, North Mexico". Journal of South American Earth Sciences. 98: Article 102456. Bibcode:2020JSAES..9802456B. doi:10.1016/j.jsames.2019.102456.
Ilaria Paparella; Erin E. Maxwell; Angelo Cipriani; Scilla Roncacè; Michael W. Caldwell (2017). "The first ophthalmosaurid ichthyosaur from the Upper Jurassic of the Umbrian–Marchean Apennines (Marche, Central Italy)". Geological Magazine. 154 (4): 837–858. Bibcode:2017GeoM..154..837P. doi:10.1017/S0016756816000455.
Lene Liebe Delsett; Aubrey J. Roberts; Patrick S. Druckenmiller; Jørn H. Hurum (2017). "A New Ophthalmosaurid (Ichthyosauria) from Svalbard, Norway, and Evolution of the Ichthyopterygian Pelvic Girdle". PLOS ONE. 12 (1): e0169971. Bibcode:2017PLoSO..1269971D. doi:10.1371/journal.pone.0169971. PMC 5266267. PMID 28121995.

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[1] Zell, P., Stinnesbeck, W. (2016). "Salinites grossicostatum (Imlay, 1939) and S. finicostatum sp. nov. from the latest Tithonian (Late Jurassic) of northeastern Mexico". Boletín de la Sociedad Geológica Mexicana. 68 (2): 305–311. doi:10.18268/BSGM2016v68n2a8.CS1 maint: multiple names: authors list (link)

[2] Ocampo-Díaz., Yam Zul Ernesto (2014). "Procedencia de la Formación La Casita y la Arcosa Patula: implicaciones para la evolución tectono-magmática del NE de México entre el Carbonífero y el Jurásico" (PDF). Revista Mexicana de Ciencias Geológicas. 31: 45–63.

[Lara2020-3] Jair Israel Barrientos Lara; Jesús Alvarado Ortega; Marta S.Fernández (2020). "Acuetzpalin carranzai gen et sp. nov. A new ophthalmosauridae (Ichthyosauria) from the Upper Jurassic of Durango, North Mexico". Journal of South American Earth Sciences. 98: Article 102456. Bibcode:2020JSAES..9802456B. doi:10.1016/j.jsames.2019.102456.

[4] Ilaria Paparella; Erin E. Maxwell; Angelo Cipriani; Scilla Roncacè; Michael W. Caldwell (2017). "The first ophthalmosaurid ichthyosaur from the Upper Jurassic of the Umbrian–Marchean Apennines (Marche, Central Italy)". Geological Magazine. 154 (4): 837–858. Bibcode:2017GeoM..154..837P. doi:10.1017/S0016756816000455.

[5] Lene Liebe Delsett; Aubrey J. Roberts; Patrick S. Druckenmiller; Jørn H. Hurum (2017). "A New Ophthalmosaurid (Ichthyosauria) from Svalbard, Norway, and Evolution of the Ichthyopterygian Pelvic Girdle". PLOS ONE. 12 (1): e0169971. Bibcode:2017PLoSO..1269971D. doi:10.1371/journal.pone.0169971. PMC 5266267. PMID 28121995.