PBDB Collection

Yelisseev-22 (Cretaceous to of Russian Federation)

Also known as Yelisseev locality, Grebenka flora

Where: Russian Federation (64.5° N, 168.9° E: paleocoordinates 78.6° N, 166.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Krivorechenskaya Formation, Albian to Albian (113.0 - 93.9 Ma)

• uppermost Albian to Lower Cenomanian

• group of beds-level stratigraphic resolution

Environment/lithology: wet floodplain; siltstone

• Sedimentary context:this is a small exposure

•with a 30-cm-thick well-sorted horizontally lami-

•nated siltstone bed with abundant plant remains

•(Fig.6).Mature,poorly preserved silicified tree

•trunks were observed in growth position,20 cm

•in diameter,branched and with nearby fallen

•branch remains.A single burrow was recorded,

•oblique-to-bedding,and 1.5 cm in width.In the

•uppermost part of the bed current ripples were

•observed indicating a main palaeocurrent direc-

•tion to the south.This bed is interpreted to rep-

•resent floodplain pond sedimentation.Above and

•below this siltstone,coarse-grained sandstones

•with chaotically oriented 5 - 6-cm-long wood frag-

•ments occur.

Size class: macrofossils

Primary reference: R. A. Spicer, A. Ahlberg, A. B. Herman, S. P. Kelley, M. I. Raikevich and P. M. Rees. 2002. Palaeoenvironment and ecology of the middle Cretaceous Grebenka flora of northeastern Asia. Palaeogeography, Palaeoclimatology, Palaeoecology 184:65-105 [D. Royer/D. Royer/D. Royer]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 34796: authorized by Dana Royer, entered by Dana Royer on 25.09.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

unclassified
-	Birisia ochotica, Arctopteris penzhinensis, Scheffleraephyllum venustum, Dalembia vachrameevii, Grebenkia anadyrensis, Alaliaephyllum sp. Birisia ochotica occurs in siltstone Arctopteris penzhinensis occurs in siltstone Scheffleraephyllum venustum occurs in siltstone Dalembia vachrameevii occurs in siltstone Grebenkia anadyrensis occurs in siltstone; abundant Alaliaephyllum sp. occurs in siltstone
Magnoliopsida
-	Dicotylophyllum sp. Dicotylophyllum sp. Saporta 1894 occurs in siltstone
Pinopsida
Pinales - Taxaceae	Cephalotaxopsis ex gr. intermedia Cephalotaxopsis ex gr. intermedia yew occurs in siltstone

Coniferales - Cupressaceae	Sequoia sp. Sequoia sp. Endlicher 1847 coast redwood occurs in siltstone
Coniferales -	Desmiophyllum sp. Desmiophyllum sp. Lesquereux 1878 occurs in siltstone
Coniferales - Podocarpaceae	Elatocladus smittiana Elatocladus smittiana podocarp occurs in siltstone
Dicotyledoneae
Myrtales - Myrtaceae	Myrtophyllum acuminata Myrtophyllum acuminata myrtle occurs in siltstone
Ericales - Ebenaceae	Diospyros aff. streenstrupii Diospyros aff. streenstrupii occurs in siltstone
Angiospermae
Vitales - Vitaceae	Cissites sp. 1 Cissites sp. 1 Debey 1866 occurs in siltstone
Rosales - Rhamnaceae	Zizyphus sp. Zizyphus sp. Miller 1758 buckthorn occurs in siltstone
Sapindales - Sapindaceae	Sapindophyllum sp. Sapindophyllum sp. Ettingshausen 1869 soapberry occurs in siltstone
Saxifragales - Cercidiphyllaceae	Trochodendroides arctica Trochodendroides arctica Berry 1926 occurs in siltstone
Ranunculales - Menispermaceae	Menispermites markovoensis, Menispermites minutus, Menispermites ex gr. septentrionalis Menispermites markovoensis occurs in siltstone Menispermites minutus occurs in siltstone Menispermites ex gr. septentrionalis occurs in siltstone
Magnoliales - Magnoliaceae	Magnoliaephyllum alternans Magnoliaephyllum alternans Heer 1926 magnolia occurs in siltstone
Polypodiopsida
-	Cladophlebis sp. 2, Cladophlebis sp. 3 Cladophlebis sp. 2 Brongniart 1849 occurs in siltstone Cladophlebis sp. 3 Brongniart 1849 occurs in siltstone
- Gleicheniaceae	Gleichenites asiatica Gleichenites asiatica occurs in siltstone
Polypodiales - Polypodiidae	Asplenium dicksonianum Asplenium dicksonianum Heer 1874 occurs in siltstone
Cyatheales - Polypodiidae	? Coniopteris grebencaensis ? Coniopteris grebencaensis scaly tree fern occurs in siltstone
Gleicheniales - Polypodiidae	Hausmannia bipartita Hausmannia bipartita occurs in siltstone
Cycadopsida
Cycadales -	"Nilssonia serotina" = Nilsonia "Nilssonia serotina" = Nilsonia cycads occurs in siltstone
Ginkgoopsida
Caytoniales - Caytoniaceae	Sagenopteris variabilis Sagenopteris variabilis Velenovsky 1885 occurs in siltstone
Ginkgoales - Ginkgoaceae	Ginkgo ex gr. adiantoides Ginkgo ex gr. adiantoides Unger 1845 ginkgo occurs in siltstone
Ginkgoales -	Sphenobaiera vera Sphenobaiera vera occurs in siltstone
Equisetopsida
Pinidae - Pinidae	Araucarites sp. Araucarites sp. Presl 1833 occurs in siltstone
Pseudotorellia
-	? Pseudotorellia sp. ? Pseudotorellia sp. Florin 1936 occurs in siltstone