FTA-131, Tashkumyr I (Jurassic of Kyrgyzstan)

Also known as Balabansai

Where: Jalal-Abad, Kyrgyzstan (41.3° N, 72.2° E: paleocoordinates 40.9° N, 76.3° E)

• coordinate stated in text

• small collection-level geographic resolution

When: Balabansai Formation, Callovian (166.1 - 163.5 Ma)

• Balabansai Svita (= "suite"); 36-37 m above base of svita, left bank of the Naryn River near the town of Tashkumyr

• bed-level stratigraphic resolution

Environment/lithology: fluvial; gray, green sandstone and gray siltstone

• "deposited under a relatively humid climate...fluvial" but also a "catastrophic mud flow"
• "variegated but predominately grey to greenish coloured...well-sorted fluvial sandstones"; "The bonebed is intercalated in dark grey clay- and siltstones"

Size classes: macrofossils, mesofossils

Collected by Fedorov, Nessov, Averianov in 1992-2003

Collection methods: bulk, quarrying, acetic, sieve,

• originally discovered by Fedorov & Nessov, 1992

Primary reference: A. O. Averianov, T. Martin, and A. A. Bakirov. 2005. Pterosaur and dinosaur remains from the Middle Jurassic Balabansai Svita in the northern Fergana depression, Kyrgyzstan (central Asia). Palaeontology 48(1):135-155 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 46545: authorized by Matthew Carrano, entered by Matthew Carrano on 19.01.2005, edited by Roger Benson and Jonathan Tennant

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Hybodontiformes - Hybodontidae
Hybodontidae indet.4 Agassiz 1843 elasmobranch
Osteichthyes
 Isospondyli - Lepidotidae
cf. Lepidotidae indet.4 Owen 1860
"ganoid fish scale"
 Dipnoi -
Ferganoceratodus jurassicus4 Nessov and Kaznyshkin 1985 lungfish
 Temnospondyli - Brachyopidae
Ferganobatrachus riabinini4 Nessov 1990 tetrapod
ZIN PH 16/47, 59/47, 60/47
Reptilia
 Testudines - Toxochelyidae
Toxocheloides sp.5 Nessov and Khozatsky 1981 sea turtle
 Testudines - Xinjiangchelyidae
Xinjiangchelyidae indet.4, ""Plesiochelys" cf. radiplicatus" = Xinjiangchelys radiplicatus5, ""Plesiochelys" cf. latimarginalis" = Xinjiangchelys latimarginalis5
""Plesiochelys" cf. radiplicatus" = Xinjiangchelys radiplicatus5 Young and Chow 1953 turtle
'dominant form [of turtle] in assemblage'
""Plesiochelys" cf. latimarginalis" = Xinjiangchelys latimarginalis5 Young and Chow 1953 turtle
'dominant form [of turtle] in assemblage'
 Saurischia -
Neosauropoda indet. Bonaparte 1986 sauropod
 Loricata - Goniopholididae
Sunosuchus sp.1 Young 1948 crocodilian
Mammalia
 Eutriconodonta - Klameliidae
cf. Ferganodon indet.3 Martin and Averianov 2007 mammal
tooth, ZIN 96583
Ferganodon naryensis n. sp.2 Martin and Averianov 2007 mammal
ZIN 94214, right lower molariform tooth
 Eutriconodonta - Amphilestidae
"Amphilestidae indet." = Amphilestidae3
"Amphilestidae indet." = Amphilestidae3 Osborn 1888 mammal
tooth, ZIN 96606
 Eutriconodonta - Triconodontidae
Triconodontidae indet.3 Marsh 1887 mammal
ZIN 96595
 Symmetrodonta - Tinodontidae
Tinodontidae indet.3 Marsh 1887 symmetrodont
ZIN 96607
 Theriiformes - Paurodontidae
Paurodontidae indet.3 Marsh 1887 mammal
teeth, ZIN 96604, 96592
 Theriiformes - Amphitheriidae
Amphitheriidae indet.3 Owen 1846 metatherian
tooth, ZIN 96600
 Docodonta -
Docodonta indet.3 Kretzoi 1946 dodocont
teeth, ZIN 96611, 96605, 96601
 Docodonta - Tegotheriidae
Tegotheriidae indet.3 Tatarinov 1994 dodocont
teeth, ZIN 96610, 97340, ZIN PH 96608, 96596
Paritatodon sp.3 Martin and Averianov 2010 dodocont
tooth, ZIN 96590
 Docodonta -
Tashkumyrodon desideratus3 Martin and Averianov 2004 dodocont
tooth, ZIN 85279
 Docodonta - Simpsonodontidae
Simpsonodon spp.3 Kermack et al. 1987 dodocont
teeth, ZIN 96593-4, 96582, 96598, 96584, 97341, ZIN PH 96586, 96589, 96609
unclassified
  -
Plantae indet.4 Haeckel 1866
"weakly carbonized wood"