Acuetzpalin

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Acuetzpalin
Temporal range: Late Jurassic, Kimmeridgian
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: †Ichthyosauria
Family: †Ophthalmosauridae
Subfamily: †Platypterygiinae
Genus: †Acuetzpalin
Barrientos-Lara & Alvarado-Ortega, 2020
Type species
†Acuetzpalin carranzai
Barrientos-Lara & Alvarado-Ortega, 2020

Acuetzpalin (meaning "water lizard" in Classical Nahuatl) is an extinct genus of

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. Its length is estimated to have been more than 3.1 metres (10 ft) long, considering the missing parts of the holotype.[3] 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]

Phylogeny

The following cladogram shows a possible phylogenetic position of Acuetzpalin in Ophthalmosauridae according to the analysis performed by Zverkov and Jacobs (2020).[6]

Ophthalmosauria
Ophthalmosaurinae
Platypterygiinae

Brachypterygius extremus

Aegirosaurus leptospondylus

Muiscasaurus catheti

Leninia stellans

Sveltonectes insolitus

Athabascasaurus bitumineus

Platypterygius americanus

Acuetzpalin carranzai

Platypterygius sachicarum

Caypullisaurus bonapartei

Platypterygius australis

Plutoniosaurus bedengensis

Simbirskiasaurus birjukovi

Platypterygius hercynicus

Sisteronia seeleyi

Platypterygius platydactylus

Maiaspondylus lindoei

References

  1. doi:10.18268/BSGM2016v68n2a8.{{cite journal}}: 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.
  3. ^
    S2CID 213102661
    .
  4. S2CID 132955874
    .
  5. PMID 28121995
    .
  6. doi:10.1093/zoolinnean/zlaa028
    .
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