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Marcianosuchus angustifrons

Reptilia

Taxonomy
Marcianosuchus angustifrons was named by Sues et al. (2024) [The type specimen is housed at the Staatliches Museum für Naturkunde Stuttgart, Germany.]. Its type specimen is SMNS 91318, a partial skeleton (mostly disarticulated but associated elements of a skeleton including a right premaxilla, right maxilla, frontals, right postorbital, right quadratojugal, right), and it is a 3D body fossil. Its type locality is Kössig quarry, Rotfelden, which is in an Aegean/Bithynian terrestrial sandstone in the Röt Formation of Germany. It is the type species of Marcianosuchus.

Synonymy list
YearName and author
2024Marcianosuchus angustifrons Sues et al. p. 3 figs. 2-15

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
RankNameAuthor
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
genusMarcianosuchus
speciesangustifrons

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.

†Marcianosuchus angustifrons Sues et al. 2024
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Diagnosis
ReferenceDiagnosis
H.-D. Sues et al. 2024Marcianosuchus angustifrons is diagnosed by the following combination of features (hypothesized autapomorphy indicated by *): posterodorsal process of premaxilla slender,
slightly inclined posterodorsally, and with rounded apex; posterodorsal surface of frontal covered by slightly diverging, fine, and anteroposteriorly extending grooves; *squamosal with distinct lateral ridge extending for entire length of element; teeth with proportionately small, weakly recurved crowns; humerus considerably shorter than femur; distal shaft of ischium rod-like, not plate-like; pubis with flat distal portion forming ‘pubic
apron’: neural spines of posterior cervical and anterior dorsal vertebrae with transversely greatly expanded apices that are Y-shaped in anterior or posterior view; dorsal vertebrae with centra taller dorsoventrally than long anteroposteriorly; *dorsal osteoderms more or less rectangular in outline, being longer anteroposteriorly than wide mediolaterally, with slightly rounded anterior and concave posterior margins and bearing dorsal ridge or eminence; and dorsal surfaces of osteoderms with unsculptured region anteriorly and sculpturing consisting of radially arranged grooves and pits more posteriorly.
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, Kiessling 2004

Age range: base of the Aegean to the top of the Bithynian or 246.70000 to 244.24000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Aegean - Bithynian246.7 - 244.24Germany (Baden-Württemberg) Marcianosuchus angustifrons (type locality: 134304)