Helmstedt (Eocene to of Germany)

Where: Germany (52.2° N, 11.0° E)

• Paleocoordinates: 45.5° N, 15.5° E (Wright 2013)

• coordinate estimated from map

When: Gehlberg Formation, Bartonian to Bartonian (41.0 - 33.9 Ma)

Environment/lithology: marine; glauconitic sandstone

Size class: macrofossils

Preservation: original phosphate

Primary reference: K. Rothausen. 1986. Marine Tetrapoden im tertären Nordsee-Becken. Beitrage zur regionalen Geologe der Erde 18:510-557 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 46086: authorized by Mark Uhen, entered by Mark Uhen on 03.01.2005, edited by Terri Cleary

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Gastropoda
 Neogastropoda - Nassariidae
Fusus sp.6
Fusus sp.6 Bruguière 1789 snail
Bivalvia
 Cardiida - Gastrochaenidae
Gastrochaena sp.6
Gastrochaena sp.6 Spengler 1783 clam
 Arcida - Arcidae
Arca sp.6
Arca sp.6 Linnaeus 1758 ark
 Arcida - Glycymerididae
"Pectunculus sp." = Glycymeris6
"Pectunculus sp." = Glycymeris6 Da Costa 1778 clam
 Ostreida - Ostreidae
Ostrea sp.6
Ostrea sp.6 Linnaeus 1758 oyster
Malacostraca
 Decapoda - Nephropidae
Hoploparia sp.1, Hoploparia klebsi1
Hoploparia sp.1 Karasawa 1998 clawed lobster
Hoploparia klebsi1 Noetling 1885 clawed lobster
 Decapoda - Zanthopsidae
"Xanthopsis wilkeningi n. sp." = Harpactocarcinus wilkeningi1
"Xanthopsis wilkeningi n. sp." = Harpactocarcinus wilkeningi1 Bachmeyer and Mundlos 1968 crab
 Decapoda - Tumidocarcinidae
Titanocarcinus zoellneri n. sp.1
Titanocarcinus zoellneri n. sp.1 Bachmeyer and Mundlos 1968 crab
 Decapoda - Geryonidae
"? Coeloma helmstedtense" = Chaceon helmstedtense1
"? Coeloma helmstedtense" = Chaceon helmstedtense1 Bachmeyer and Mundlos 1968 crab
 Decapoda - Carcinidae
Coeloma balticum1
Coeloma balticum1 Schluter 1879 crab
 Decapoda - Raninidae
Raninoides sp.1
Raninoides sp.1 Feldmann et al. 1996 crab
Chondrichthyes
 Rajiformes - Rajidae
Rajidae indet.4
Rajidae indet.4 Blainville 1816 skate
scales
 Myliobatiformes - Myliobatidae
"Myliobatis dixoni" = Aetomylaeus dixoni6
"Myliobatis dixoni" = Aetomylaeus dixoni6 Agassiz 1843 eagle ray
[entered as Myliobates dixoni]
 Lamniformes - Carchariidae
"Lamna cuspidata" = Carcharias cuspidatus6
"Lamna cuspidata" = Carcharias cuspidatus6 Agassiz 1843 sand shark
 Lamniformes - Mitsukurinidae
"Lamna elegans" = Striatolamia macrota6
"Lamna elegans" = Striatolamia macrota6 Agassiz 1838 goblin shark
Mammalia
 Placentalia -
Cetacea indet.2
Cetacea indet.2 Brisson 1762 whale
tibia fragment NMRx1799
 Cetacea -
Archaeoceti indet.
 Cetacea - Basilosauridae
Basilosauridae indet.7, "cf. Dorudon osiris" = Saghacetus osiris, Pachycetus paulsoni3, Pachycetus paulsoni3, Pachycetus paulsonii3
Basilosauridae indet.7 Cope 1867 whale
"cf. Dorudon osiris" = Saghacetus osiris Dames 1894 whale
Pachycetus paulsoni3 whale
morphotype A
Pachycetus paulsonii3 Brandt 1873 whale
Reptilia
 Testudines - Cheloniidae
Chelyopsis raabei n. sp.5
Chelyopsis raabei n. sp.5 Karl and Schleich 1994 sea turtle
lower jaw
1Bachmeyer and Mundlos 1968; 2Davydenko et al. 2023; 3Gingerich et al. 2022; 4Hillmer and Mundlos 1981; 5Karl 2007; 6Van Beneden 1883; 7van Vliet et al. 2020