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Silesaurus opolensis

Osteichthyes

Taxonomy
Silesaurus opolensis was named by Dzik (2003). Its type specimen is ZPAL Ab III/361, a skeleton, and it is a 3D body fossil. Its type locality is Krasiejów locality (upper), which is in a Tuvalian fluvial claystone/mudstone in the Drawno Beds Formation of Poland.

Synonymy list
YearName and author
2003Silesaurus opolensis Dzik pp. 560-561 figs. 1-14
2006Silesaurus opolensis Ezcurra p. 657 fig. 3
2006Silesaurus opolensis Langer and Benton p. 311
2007Silesaurus opolensis Irmis et al. p. 359
2007Silesaurus opolensis Irmis et al. p. 15
2007Silesaurus opolensis Smith and Pol p. 660
2008Silesaurus opolensis Butler et al. p. 17
2008Silesaurus opolensis D'Orazi Porchetti et al. p. 283 fig. 10
2008Silesaurus opolensis Irmis and Knoll p. 121
2009Silesaurus opolensis Bittencourt and Kellner p. 9
2009Silesaurus opolensis Martínez and Alcober p. 1
2010Silesaurus opolensis Langer et al. p. 59
2011Silesaurus opolensis Nesbitt p. 48
2012Silesaurus opolensis Kammerer et al. p. 277
2014Silesaurus opolensis Marzola and Dalla Vecchia p. 13
2016Silesaurus opolensis Griffin and Nesbitt p. 2
2016Silesaurus opolensis Martínez et al. p. 2
2019Silesaurus opolensis Martz and Small p. 2
2019Silesaurus opolensis Veiga et al. p. 10
2020Silesaurus opolensis Desojo et al. p. 27
2020Silesaurus opolensis Moro et al.

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

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.

†Silesaurus opolensis Dzik 2003
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Diagnosis
ReferenceDiagnosis
J. Dzik 2003Beak on the dentaries; small number of teeth (11–12 in both dentary and maxilla); 25 presacral vertebrae with 9 –11 cervicals, and last two dorsals fused with the two sacrals that have deep sacral ribs; elongate, gracile front limbs, and digit I of pes reduced to vestigial metatarsal that probably lacked phalanges. This is a combination of characters unique among members of the lineage leading to dinosaurs, which share with the new species a similar tarsal structure (Lagerpeton) and an elongated pubis (Pseudolagosuchus).
Measurements
No measurements are available
Composition: hydroxyapatiteo
Entire body: yeso
Adult length: 10 to < 100o
Adult width: 1.0 to < 10o
Adult height: 1.0 to < 10o
Architecture: compact or denseo
Ontogeny: accretion, modification of partso
Grouping: gregariouso
Environment: terrestrialo
Locomotion: actively mobileo
Life habit: ground dwellingo
Diet: herbivoreg
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2009-01-04 09:41:51
Modified: 2009-01-04 11:41:51
Source: g = genus, o = order
References: Kiessling 2004, Dzik 2003, Marsh 1875

Age range: Tuvalian or 233.60000 to 227.30000 Ma

Collections (3 total)


Time interval Ma Country or state Original ID and collection number
Carnian - Norian237.0 - 205.7Poland (Opole) Archosauria indet. (61450) Silesaurus opolensis (61448)
Tuvalian233.6 - 227.3Poland (Opole) Silesaurus opolensis (type locality: 61449)