Rott (Oligocene of Germany)

Also known as Siebengebirge, Romerikenberg mine, Krautgarten mine, Geistinger Busch, Geistinger Wald, Dambruch, Dambroich

Where: North Rhine-Westfalia, Germany (50.8° N, 7.3° E: paleocoordinates 50.6° N, 4.3° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: MP 30 (28.4 - 23.0 Ma)

• "MP30"

Environment/lithology: lacustrine - small; poorly lithified, diatomaceous, carbonaceous shale

• According to the reconstruction of the sedimentary history, the limnic sediments of the Rott Formation were deposited in a single, relatively small and shallow lake (Mörs, 1995). This lake was at least 3 km in diameter, and was encircled by a large accretion zone, which passed into an alluvial forest. Many small rivulets are expected to have flown into the Rott Lake, but no large river could be evidenced (Mörs, 1995). The estimated mean aunual temperature (MAT) in this area at the accumulation time of lake sediments was 17.5 ± 1.2°C, based on the leaf margin analysis (Winterscheid, 2006).
• "fine layered brown coal" also called "lignites" or "Blätterkohle" or "Papierkohle" - actually these deposits are not true lignite but are bituminous, diatomaceous shale (referred to as "oil shale" by Szyndlar & Böhme, 1996); lithology etries (originally "lithified lignite") has been changed accordingly

•figures of specimens indicate lithification to a certain degree

Size classes: macrofossils, mesofossils

Preservation: mold/impression, adpression

Reposited in the BMNH, LACM

Collection methods: quarrying,

• several specimens (turtles ,snakes insects) are housed in the Institut für Paläontologie of the Rheinische Friedrich-Wilhelm-Universität, Bonn (GPIBO)

Primary reference: S. Hervet and F. de Broin. 2000. Palaeochelys mlynarskii n. sp., de l’Oligocène supérieur de Rott (Allemagne), et redescription de l’espèce type P. bussenensis Meyer, 1847. Comptes Rendus de l’Académie des Sciences - Series IIA - Earth and Planetary Science 331(8):563-569 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 84606: authorized by John Alroy, entered by John Alroy on 02.11.2008, edited by Torsten Liebrecht and Terri Cleary

Creative Commons license: CC BY (attribution)

Taxonomic list

• list omits numerous plants, insects, and vertebrates described in 19th and 20th century literature
 Cypriniformes - Cyprinidae
"Cyprinus papyraceus n. sp." = Palaeorutilus papyraceus3, "Leuciscus (Tarsichthys) tarsiger n. sp." = Tarsichthys macrurus9
"Cyprinus papyraceus n. sp." = Palaeorutilus papyraceus3 Bronn 1828 carp-like fish
Bronn speaks of "several hundred" specimens, coming from the Geistinger Busch between Rott and Dambruch (= Dambroich)
"Leuciscus (Tarsichthys) tarsiger n. sp." = Tarsichthys macrurus9 Agassiz 1834 carp-like fish
GPIBo Ro 4100 (holotype)
 Salientia - Pelobatidae
Eopelobates anthracinus n. gen. n. sp.10
Eopelobates anthracinus n. gen. n. sp.10 Parker 1929 spadefoot toad
 Salientia - Hylidae
Hyla europaea n. sp.6
Hyla europaea n. sp.6 Noble 1928 tree frog
type was "doubtfully referred to Rana meriana by Lydekker (1890)"
 Salientia - Discoglossidae
Zaphrissa eurypelis n. gen. n. sp.2
Zaphrissa eurypelis n. gen. n. sp.2 Cope 1866 painted frog
Princeton specimen "purchased abroad in 1861" by A. Guyot
 Testudines - Panchelydridae
"Chelydra decheni n. sp." = Chelydropsis decheni
"Chelydra decheni n. sp." = Chelydropsis decheni Meyer 1852 turtle
IPB Ro4016 - type
 Testudines -
"Palaeochelys mlynarskii n. sp." = Palaeomauremys mlynarskii
"Palaeochelys mlynarskii n. sp." = Palaeomauremys mlynarskii Hervet and de Broin 2000 turtle
 Squamata - Anguidae
Anguini indet.1 Augé 2005 lizard
Pseudopus moguntinus4 Boettger 1875 legless lizard
SM specimens, mostly disarticulated; BM 42756, skeleton. See also Auge 2005.
 Squamata - Boidae
"Tropidonotus atavus n. sp." = Rottophis atavus7, "Elaphis atavus" = Rottophis atavus5, "Morelia papyracea n. sp." = Rottophis atavus8
"Tropidonotus atavus n. sp." = Rottophis atavus7 von Meyer 1855 boa
GPIBo Ro 4023 (holotype), from Romerikenberg mine, also regarded as the holotype of Coluber papyraceus Fischer 1857; BMNH 36377, described and figured as Coluber (Tropidonotus ?) atavus in von Meyer (1860, Palaeontographica 7(4)), referred to as Morelia papyracea by Troschel (1861, Archiv f. Naturgesch. 27(1)), and listed as Elaphis atavus by Lydekker (1888)
"Elaphis atavus" = Rottophis atavus5 von Meyer 1855 boa
BMNH 33065, 36378 (counterpart of 36377), 41088
"Morelia papyracea n. sp." = Rottophis atavus8 von Meyer 1855 boa
GPIBo Ro 4024, regarded as holotype