Dzwinogorod Beds at S-D boundary sections in Dniestr Valley (Silurian of Ukraine)

Where: Ukraine (49.1° N, 25.4° E: paleocoordinates 18.6° S, 6.5° E)

• coordinate based on political unit

• local area-level geographic resolution

When: Dzwinogorod Beds Formation, Pridoli (423.0 - 419.2 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; argillaceous limestone and argillaceous marl

• "A unit of irregularly bedded, nodular limestones with bands of loose marls containing concretions of clayey limestone...(11.3 m) [followed by] tuffogeneic clays and limestones (3.2 m) [followed by] nodular limestones with marl selvages and clayey marls (3.3 m)...[followed by] a unit [of] limestones, compact marls, nodular clayey limestones, and two lenticular, gray, cloddy limestone bands separated by a thin marl band..."

Collection methods: Collection combines outcrops 64 and 85.

Primary reference: O. I. Nikiforova. 1977. Podolia. In A. Martinsson (ed.), The Silurian-Devonian boundary (IUGS Publication, Series A, Number 5) 52-64 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 13874: authorized by Michael Foote, entered by Michael Foote on 30.04.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Conodonta
 Prioniodontida - Icriodontidae
Icriodus woschmidti Ziegler 1960 conodont
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
 Pisocrinida - Pisocrinidae
 Monobathrida - Scyphocrinitidae
"Scyphocrinites elegans" = Scyphocrinites, "Camarocrinus sp." = Scyphocrinites
"Scyphocrinites elegans" = Scyphocrinites Sea lily
"Camarocrinus sp." = Scyphocrinites Zenker 1833 Sea lily
Trilobita
  -
Trilobita indet. Walch 1771 trilobite
 Phacopida - Acastidae
Acastella prima trilobite
Acastella spinosa Salter 1864 trilobite
 Proetida - Proetidae
"Warburgella rugulosa" = Warburgella (Rugulites) rugulosa, "Proetus volkovcyanus" = Proetus volcovcyanus
"Warburgella rugulosa" = Warburgella (Rugulites) rugulosa Alth 1874 trilobite
"Proetus volkovcyanus" = Proetus volcovcyanus Balashova 1968 trilobite
Brachiopoda
  -
Brachiopoda indet. Cuvier 1805
Rhynchonellata
 Atrypida -
"Zygospirella sublepida" = Zygospiraella
"Zygospirella sublepida" = Zygospiraella
 Atrypida - Atrypidae
 Spiriferida - Delthyrididae
 Athyridida - Anoplothecidae
 Athyridida - Dayiidae
 Orthida - Dalmanellidae
 Rhynchonellida - Trigonirhynchiidae
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
Stenolaemata
 Cystoporata - Fistuliporidae
Cephalopoda
 Discosorida - Mandaloceratidae
 Nautiloidea -
Nautiloidea indet. Agassiz 1847 nautiloid
Anthozoa
 Tabulata -
Tabulata indet. tabulate coral
 Favositida - Cleistoporidae
Riphaeolites tchernovi tabulate coral
 Favositida - Favositidae
Favosites eichwaldi tabulate coral
 Heliolitida - Heliolitidae
 Auloporida - Syringoporidae
Syringopora schmidti tabulate coral
 Rugosa -
Rugosa indet. horn coral
 Cystiphyllida - Tryplasmatidae
Aphyllum sociale, "Pholidophyllum formosum" = Tryplasma
Aphyllum sociale horn coral
"Pholidophyllum formosum" = Tryplasma horn coral
 Stauriida - Lykophyllidae
Stromatoporoidea
 Syringostromatida - Coenostromatidae
Parallelostroma gukovensis stromatoporoid sponge