Donguz I, PIN 952: Anisian, Russian Federation
collected by P. Klimov 1935–1936
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Chondrichthyes
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Elasmobranchii indet.
Bonaparte 1838
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1 element | |||||||||
| "Ichthyodorulit" is a spine, presumably from Elasmobranchii | ||||||||||
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Amphibia
- Temnospondyli
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Labyrinthodontia indet.
Owen 1859
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7 specimens | |||||||||
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= Eryosuchus tverdochlebovi n. gen., n. sp.
Ochev 1966
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Shishkin et al. 2000 | |||||||||
| PIN (SGU) 104/3090, skull and postcranial material (holotype). Additional postcranial material includes PIN (SGU) 104:194-196, 2965, 3684, 3693 | ||||||||||
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Eryosuchus garjainovi
Ochev 1966
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Schoch and Milner 2000 | 5 specimens | ||||||||
| synonym of Eryosuchus tverdochlebovi | ||||||||||
| PIN 104/1203, 1278, 2279, 2966, 2950, postcranial bones | ||||||||||
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Amphibia
- Temnospondyli
- Plagiosauridae
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Plagioscutum ochevi
Shishkin 1986
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Tverdokhlebov et al. 2003 | |||||||||
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Bystrowianidae
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Bystrowianidae indet.
Vjushkov 1957
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Tverdokhlebov et al. 2003 | |||||||||
| PIN 952/184, fragmentary scute | ||||||||||
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Reptilia
- Erythrosuchidae
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Erythrosuchus magnus
Ochev 1980
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Gower and Sennikov 2000 | 1 specimen | ||||||||
| recombined as Uralosaurus magnus | ||||||||||
| PIN 952/95, four presacral vertebrae | ||||||||||
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Reptilia
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Dorosuchus neoetus
Sennikov 1989
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Gower and Sennikov 2000 | 1 specimen | ||||||||
| PIN 952/200, ilium | ||||||||||
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Dongusuchus efremovi n. gen., n. sp.
Sennikov 1988
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Gower and Sennikov 2000 | 2 specimens | ||||||||
| PIN 952/15-1, femur (holotype). PIN 952/84-1, epipodials | ||||||||||
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Dongusia colorata n. gen., n. sp.
Huene 1940
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Huene 1940 | 1 specimen | ||||||||
| nomen dubium belonging to Pseudosuchia | ||||||||||
| PIN 268/2, dorsal vertebra | ||||||||||
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Reptilia
- Thecodontia
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? Thecodontosaurus sp.
Riley and Stutchbury 1836
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1 specimen | |||||||||
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= Thecodontia indet.
Owen 1859
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Nessov 1995 | |||||||||
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Anomodontia
- Dicynodontidae
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Rabidosaurus cristatus n. gen., n. sp.
Kalandadze 1970
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Battail and Surkov 2000 | 1 specimen | ||||||||
| PIN 952/100, almost complete skull | ||||||||||
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Anomodontia
- Kannemeyeriidae
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Lystrosaurus klimovi n. sp.
Efremov 1940
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4 specimens | |||||||||
| recombined as Rhadiodromus klimovi | ||||||||||
| PIN 159/1, partial skull and incomplete skeleton (holotype). PIN 952/111, incomplete skull. PIN 952/13, 18, isolated bones | ||||||||||
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Therocephalia
- Bauriidae
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Dongusaurus schepetovi n. gen., n. sp.
Vjuschkov 1964
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Battail and Surkov 2000 | 1 specimen | ||||||||
| nomen dubium belonging to Bauriidae | ||||||||||
| PIN 952/1, right dentary lacking teeth | ||||||||||
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Dipnoi
- Ceratodontidae
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Ceratodus gracilis
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Tverdokhlebov et al. 2003 | |||||||||
| Dental plates | ||||||||||
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Ceratodus jechartiensis
Minikh 1977
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Tverdokhlebov et al. 2003 | |||||||||
| Dental plates | ||||||||||
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Ceratodus recticristatus
Vorobyeva and Minikh 1968
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Tverdokhlebov et al. 2003 | |||||||||
| Dental plates | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Russian Federation | State/province: | Orenburg | County: | Sol'-Iletsk |
| Coordinates: | 51.4° North, 55.3° East (view map) | ||||
| Paleocoordinates: | 33.6° North, 43.4° East | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Triassic | Epoch: | Middle Triassic |
| Stage: | Anisian | 10 m.y. bin: | Triassic 2 |
| *Period: | Early/Lower Triassic - Middle Triassic | *Epoch: | Scythian - Middle Triassic |
| Key time interval: | Anisian | Other zone: | Perovkan |
| Age range of interval: | 247.20000 - 242.00000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Donguz | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Outcrop is ~10 meters high. The author does not explicitly state which layer Lystrosuarus klimovi is from in the english text, but bed 3 is marked in Fig. 24. Detailed lithological descriptions are provided for each bed in the russian text.
Equivalent to the South African "Cynognathus Zone, corresponding to the Upper Buntsandstein of Germany, or to the Scythian." The Cynognathus Zone has recently been split into three time equivalent assemblages, therefore a Scythian age may not be correct. Additional note: Tverdokhlebov et al. (2003) assign the locality to the Middle Triassic (Anisian) Donguz Svita. Original stratigraphic data are modified accordingly (TL). The Donguz Svita is the "characteristic" tetrapod assemblage for the Perovkan Land Vertebrate Faunachron of Lucas, considered to be of Anisian age (see Lucas 2010) | |||||
Lithology and environment
| Primary lithology: | ferruginous,black,gray,green sandstone | ||
| Secondary lithology: | lenticular conglomerate | ||
| Includes fossils? | Y | ||
| Lithology description: There are at least three vertebrate-bearing layers at this outcrop, it is unclear whether all of the bones are found in concretions. General outcrop description includes variegated marls, clays, sands and sandstones. Lystrosaurus-bearing concretions = "rather mellow sandstone, which here and there is impregnated with ferrous and manganous compounds, dying the rock into an almost black colour." Layer 8 = clay sandstones of greenish tint. Layer 9 = grey, coarse-granulate sandstones and conglomerates with Ural pebbles. Tverdokhlebov et al. (2003) give the following description: "Grey, fine- to medium-grained sandstone with lenses of conglomerate and interlayers of siltstone." | |||
| Environment: | fluvial-deltaic indet. | Tectonic setting: | foreland basin |
| Geology comments: "deltaic deposits" Tverdokhlebov et al. (2003). | |||
Taphonomy
| Modes of preservation: | body,concretion |
| Degree of concentration: | dispersed |
| Size of fossils: | macrofossils |
| Articulated whole bodies: | some |
| Disassociated minor elements: | many |
Collection methods and comments
| Collection methods: | surface (float),surface (in situ),field collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | P. Klimov | Collection dates: | 1935–1936 |
| Taxonomic list comments:Full taxa list as given in Tverdokhlebov et al. (2003) is not yet entered into the collection since indeterminate taxa already listed by Efremov may have been re-identified later. See references in Tverdokhlebov et al. (2003) for details. | |||
Metadata
| Also known as: | Locality 36; Dongus river; Perovsky settlement; | ||
| Database number: | 28850 | ||
| Authorizer: | J. Alroy, A. Dunhill, R. Butler, M. Carrano | Enterer: | R. Whatley, M. Carrano, R. Butler, B. Allen |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2003-02-25 13:00:03 | Last modified: | 2021-10-06 12:57:36 |
| Access level: | the public | Released: | 2003-02-25 13:00:03 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 7854. | 5% 47000 | J. A. Efremov. 1940. Predvaritel'noye opisaniye novykh form permskoy i triasovoy fauny nazemnykh pozvonochnykh SSSR [Preliminary description of new forms from the Permian and Triassic terrestrial vertebrate fauna of the USSR]. Trudy Paleontologicheskogo Instituta Akademiy Nauk SSSR 10(2):1-140 [J. Alroy/R. Whatley/M. Carrano] |
Secondary references:
| 28966 | B. Battail and M. V. Surkov. 2000. Mammal-like reptiles from Russia. In M. J. Benton, M. A. Shishkin, D. M. Unwin & E. N. Kurochkin (eds.), The Age of Dinosaurs in Russia and Mongolia. Cambridge University Press, Cambridge 86-119 [J. Mueller/T. Liebrecht] | |
| 29101 | D. J. Gower and A. G. Sennikov. 2000. Early Archosaurs from Russia. In M. J. Benton, M. A. Shishkin, D. M. Unwin & E. N. Kurochkin (eds.), The Age of Dinosaurs in Russia and Mongolia. Cambridge University Press, Cambridge 140-159 [J. Mueller/T. Liebrecht] | |
| 9920 | F. v. Huene. 1940. Eine Reptilfauna aus der ältesten Trias Nordrußlands [A reptilian fauna from the earliest Triassic of northern Russia]. Neues Jahrbuch für Mineralogie, Geologie und Paläontologie, Beilagen-Band, Abteilung B 84:1-23 [J. Alroy/R. Whatley/T. Liebrecht] | |
| 46409 | M. F. Ivakhnenko. 2011. Permian and Triassic therocephals (Eutherapsida) of Eastern Europe. Paleontological Journal 45(9):981-1144 [R. Butler/R. Butler] | |
| 16510 | ETE | L. A. Nessov. 1995. Dinozavri severnoi Yevrazii: Novye dannye o sostave kompleksov, ekologii i paleobiogeografii [Dinosaurs of northern Eurasia: new data about assemblages, ecology, and paleobiogeography]. Institute for Scientific Research on the Earth's Crust, St. Petersburg State University, St. Petersburg 1-156 [M. Carrano/K. Maguire/M. Carrano] |
| 28828 | R. Schoch and A. R. Milner. 2000. Stereospondyli. Handbuch der Paläoherpetologie - Encyclopedia of Paleoherpetology 3B:1-203 [J. Mueller/T. Liebrecht] | |
| 28553 | M. A. Shishkin, I. V. Novikov, and Y. M. Gubin. 2000. Permian and Triassic temnospondyls from Russia. In M. J. Benton, M. A. Shishkin, D. M. Unwin & E. N. Kurochkin (eds.), The Age of Dinosaurs in Russia and Mongolia. Cambridge University Press, Cambridge 35-59 [J. Mueller/T. Liebrecht/T. Liebrecht] | |
| 28844 | V. P. Tverdokhlebov, G. I. Tverdokhlebova, M. V. Surkov and M. J. Benton. 2003. Tetrapod localities from the Triassic of the SE of European Russia. Earth-Science Reviews 60(1-2):1-66 [J. Mueller/T. Liebrecht/B. Allen] | |
| 68327 | K. B. Yuryev. 1954. Kratkiy obzor nakhodok dinozavrov na territorii SSSR [A brief reivew of dinosaur finds in the USSR]. Uchenyye Zapiski, Leningradskogo Ordena Lenina Gosudarstvennogo Universiteta. Seriya Biologicheskikh Nauk 181(38):183-197 [M. Carrano/M. Carrano] |