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Diodorus

Reptilia

Discussion

Diodorus is a small-bodied (less than 1 meter body length) dinosauriform known from specimens from Morocco representing several individuals. Diodorus belongs to Silesauridae - a clade of highly dinosaur-like animals currently believed to be the closest relatives of true dinosaurs (the sister taxon to Dinosauria). Diodorus represents the first member of this group discovered in northern Africa, and supports a cosmopolitan distribution for silesaurids in the Middle-Late Triassic.

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Taxonomy
Diodorus was named by Kammerer et al. (2012). It was considered monophyletic by Kammerer et al. (2012).

It was assigned to Silesauridae by Kammerer et al. (2012) and Martínez et al. (2016); and to Sulcimentisauria by Martz and Small (2019).

Synonymy list
YearName and author
2012Diodorus Kammerer et al.
2016Diodorus Martínez et al. p. 8 fig. 4
2019Diodorus Martz and Small p. 53

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
RankNameAuthor
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Silesauridae
—Sulcimentisauria
genusDiodorus

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.

G. †Diodorus Kammerer et al. 2012
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†Diodorus scytobrachion Kammerer et al. 2012
Diagnosis
ReferenceDiagnosis
C. F. Kammerer et al. 2012Small silesaurid with triangular, denticulated teeth, cingula absent, and a marked decrease in size anteriorly in the dentary. All teeth preserved in place in the dentary are anteriorly directed at an angle of ~20° from the root. Meckelian groove restricted to ventral edge of dentary but expands in dorsoventral height posteriorly, reaching 40% of dentary height by the fourth tooth position. Dentary ventrally bowed. Lateral ridge present near and trending parallel to alveolar margin of the dentary.
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: base of the Carnian to the top of the Norian or 237.00000 to 208.50000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Carnian - Norian237.0 - 208.5Morocco (Marrakech-Safi) D. scytobrachion (118012)