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Iaremys batrachomorpha

Reptilia - Testudines - Chelidae

Discussion

Etymology, batrachomorpha, toad-like referring to the anuran-like shape of the skull.

Taxonomy
Iaremys batrachomorpha was named by Agnolín et al. (2024). Its type specimen is MPCN-PV-1005, a partial skull (incomplete anterior section of the skull), and it is a 3D body fossil. Its type locality is Morales Quarry, which is in a Maastrichtian shoreface sandstone in the Allen Formation of Argentina. It is the type species of Iaremys.

Synonymy list
YearName and author
2024Iaremys batrachomorpha Agnolín et al.

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
RankNameAuthor
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
—Testudinata(Oppel 1811)
orderTestudinesBatsch 1788
suborderPleurodira
familyChelidaeGray 1825
subfamilyHydromedusinaeBaur 1893
genusIaremys
speciesbatrachomorpha

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Iaremys batrachomorpha Agnolín et al. 2024
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Diagnosis
ReferenceDiagnosis
F. L. Agnolín et al. 2024Medium-sized chelid with the following combination of character states: dorsoventrally flattened skull having a longitudinal depression along the frontal and parietal bones; wide and dorsally exposed narial depression; orbits sub-circular in outline and widely separated in dorsal view; orbits dorsally oriented and located far from the anterior margin of the skull; anteriorly expanded skull emargination reaching the level of the posterior orbital margin.
Measurements
No measurements are available
Composition: phosphaticsubp
Body part: carapacef
Adult length: 0.1 to < 1.0f
Grouping: solitaryf
Environment: freshwaterf
Locomotion: actively mobilec
Life habit: amphibiousf
Diet: piscivoref
Reproduction: oviparousf
Created: 2005-08-25 14:20:51
Modified: 2005-08-26 16:30:55
Source: f = family, c = class, subp = subphylum
References: Hendy et al. 2009, Carroll 1988, Ernst and Barbour 1989

Age range: Maastrichtian or 72.10000 to 66.00000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Maastrichtian72.1 - 66.0Argentina (Rio Negro) Iaremys batrachomorpha (type locality: 237272)