Graptolites of the Monograptus gregarius Zone on Bornholm (Silurian of Denmark)

Where: Bornholm, Denmark (55.1° N, 14.7° E: paleocoordinates 29.6° S, 4.9° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Aeronian (440.8 - 438.5 Ma)

Environment/lithology: marine; lithified, pyritic, gray, calcareous shale and lithified limestone

• "...shales...grey to dark grey. Three limestone bands, each about 10 cm thick...Occasionally horizons with well preserved pyritized graptolites..."

Collection methods: Middle part of zone said to contain conspicuous bivalves, brachiopods, and orthocone cephalopods.

Primary reference: M. Bjerreskov. 1975. Llandoverian and Wenlockian graptolites from Bornholm. Fossils and Strata (8)1-93 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 13709: authorized by Michael Foote, entered by Michael Foote on 19.04.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Pterobranchia
 Graptoloidea - Retiolitidae
"Petalograptus ovatoelongatus" = Petalolithus, "Petalograptus ? minor" = Petalolithus
"Petalograptus ovatoelongatus" = Petalolithus graptolite
"Petalograptus ? minor" = Petalolithus graptolite
 Graptoloidea - Monograptidae
"Monograptus atavus" = Atavograptus atavus Jones 1909 graptolite
 Graptoloidea - Normalograptidae
"Pseudoclimacograptus undulatus" = Metaclimacograptus undulatus, Rhaphidograptus toernquisti
"Pseudoclimacograptus undulatus" = Metaclimacograptus undulatus Kurek 1882 graptolite
Rhaphidograptus toernquisti Elles and Wood 1906 graptolite
 Graptoloidea - Climacograptidae
Climacograptus ? scalaris Lapworth 1877 climacograptid
 Graptoloidea - Diplograptidae