Basic info Taxonomic history Classification Included Taxa
Morphology Ecology and taphonomy External Literature Search Age range and collections

Alamitosphenos mineri

Reptilia - Rhynchocephalia - Sphenodontidae

Taxonomy
Alamitosphenos mineri was named by Agnolín et al. (2023). Its type specimen is MPMIK 1759/p/23, a mandible (Incomplete left dentary with three preserved hatchling teeth), and it is a 3D body fossil. Its type locality is Base of Cerro Cuadrado, which is in a Maastrichtian terrestrial mudstone in the Los Alamitos Formation of Argentina. It is the type species of Alamitosphenos.

Synonymy list
YearName and author
2023Alamitosphenos mineri Agnolín et al. p. 4 fig. 2

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
RankNameAuthor
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
—Eosuchia()
—Neodiapsida
—SauriaGauthier 1984
—Lepidosauromorpha(Benton 1983)
superorderLepidosauria()
orderRhynchocephalia
familySphenodontidaeCope 1871
—Opisthodontia
genusAlamitosphenos
speciesmineri

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.

†Alamitosphenos mineri Agnolín et al. 2023
show all | hide all
Diagnosis
ReferenceDiagnosis
F. L. Agnolín et al. 2023Medium-sized sphenodontid diagnosable by the following combination of characters: 1) hatchling teeth which show a subquadrangular base in cross-section; 2) dorsal surface of dentary anterior to the teeth forming an edentulous edge that is ventrally oriented; 3) robust dentary symphysis that is ventrally extended, forming a chin that contrastswith the concave ventral surface of dentary; 4) prominent
dentary symphysis that conforms a “U”-shaped arcade in dorsal view; and 5) symphysis ovoidal in contour, simple and with a deep, well defined and obliquely oriented groove.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Created: 2017-04-17 15:16:03
Modified: 2017-04-17 15:16:03
Source: subc = subclass, c = class, subp = subphylum
References: Carroll 1988, Hendy et al. 2009

Age range: Maastrichtian or 72.20000 to 66.00000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Maastrichtian72.2 - 66.0Argentina (Río Negro) Alamitosphenos mineri (type locality: 232186)