Blagoveschensk (Cretaceous of Russian Federation)

Where: Amur, Russian Federation (50.3° N, 127.5° E: paleocoordinates 52.0° N, 113.8° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Udurchukan Formation (Tsagayan Group), Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• Wodehousia spinata-Aquilapollenities subtilis palynozone; lower part of group, Unit 2 of formation

• bed-level stratigraphic resolution

Environment/lithology: crevasse splay; tabular, intraclastic, brown, green claystone and pebbly, green claystone

• "deposition in fluvial or alluvial palaeoenvironment", interpreted as debris flows
• "green-coloured claystones with a considerable amount of dispersed granules. A basal pebble lag with a maximum clast size of 20 cm occurs at the base of these sediments."; "green-to-brown massive claystones...The clays are dominantly smectite with some illite and kaolinite. No bioturbation or paleosol development beyond inceptisols...matrix-supported clasts..."

Size classes: macrofossils, mesofossils, microfossils

Collected by I. Bastrykin, A. Lazarev, A. R. Rozhdestvensky in 1948, 1951, 1972, 1981-1989, 2005-2006

Collection methods: bulk, quarrying, mechanical,

Primary reference: A. K. Rozhdestvensky. 1957. O mestonaxozhdeniyx beuxnemelouix dinosaurou na R. Amur [Dinosaurian localities of Upper Cretaceous on Amur River]. Vertebrata PalAsiatica 1(4):285-291 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 47029: authorized by Matthew Carrano, entered by Matthew Carrano on 01.02.2005, edited by Alfio Alessandro Chiarenza and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

 Testudines -
Testudines indet.3 Batsch 1788 turtle
 Saurischia -
Titanosauria indet.6 Bonaparte and Coria 1993 sauropod
AEHM 1/316
Theropoda indet.5 Marsh 1881 theropod
 Avetheropoda - Dromaeosauridae
Dromaeosauridae indet.2 Colbert and Russell 1969 coelurosaur
 Avetheropoda - Troodontidae
Troodon sp.1 Leidy 1856 coelurosaur
 Ornithischia - Nodosauridae
Nodosauridae indet.3 Marsh 1890 ornithischian
 Neornithischia - Hadrosauridae
Kerberosaurus manakini n. gen. n. sp.3, Amurosaurus riabinini n. gen. n. sp.4
Kerberosaurus manakini n. gen. n. sp.3 Bolotsky and Godefroit 2004 hadrosaurine
AEHM 1/319
Amurosaurus riabinini n. gen. n. sp.4 Bolotsky and Kurzanov 1991 lambeosaurine
hundreds of specimens; AEHM 1/12, 1/1755, 1/1038, 1/1715, 1/1716, 1/1682,
 Loricata -
Crocodylia indet.3 crocodilian
 Anthophyta -
 Pinales - Cupressaceae
Cupressinoxylon sp.7 Göppert 1850