Langental, NE of Bogenfels (Eocene of Namibia)

Where: Sperrgebiet, Namibia (27.4° S, 15.4° E: paleocoordinates 31.4° S, 8.6° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: NP 19-20 nannofossil zone, Langental Beds Formation, Priabonian (38.0 - 33.9 Ma)

• The marine beds are only about 4 m thick. The age can be narrowly defined by the range overlap of Discoaster saipanensis and Isthmolithus recurvus. The former ranges from the middle to upper Eocene and the latter from upper Eocene to lower Oligocene. They co-occur only in the NP 19 and NP 20 zones of Martini's (1971) biostratigraphic zonal scheme, and only in the I. recurvus subzone of Bukry's (1975) zonal scheme. Informally named "Langental Beds."

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; poorly lithified, shelly/skeletal, green, yellow, calcareous siltstone and lithified, concretionary, shelly/skeletal, gray, green, yellow, calcareous sandstone

• Members of the nannofossil genus Braorudosphaera are virtually absent in open-ocean deposits, and are thus strong indicators of nearshore environments; Zygrhablithus bijugatus is also most common in nearshore waters. The benthic foraminifera also suggest a normal marine, shallow-water environment.
• Concretionary calcareous sandstones and marly sandstones and siltstone. At least one layer of light-brown ferruginous calcirudite occurs near the bottom of the section. This layer contains pebbles, but is predominantly composed of neomorphosed mollusc fragments set in micrite and microspar. The marly sand- and siltstones are mostly pale greenish yellow, poorly consolidated, and calcareous. The calcareous concretionary layers are greyish yellow to pale greenish yellow and are moderately well indurated.

Size classes: macrofossils, mesofossils, microfossils

Primary reference: J. Böhm and W. Weisfermel. 1913. Über tertiäre Versteinerungen von den Bogenfelser Diamantfeldern. Beiträge zur Geologischen Erforschung der Deutschen Schutzgebiete 5:58-111 [M. Uhen/M. Uhen/M. Clapham]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 149316: authorized by Mark Uhen, entered by Mark Uhen on 01.08.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Ostreida - Ostreidae
Ostrea gingensis africana, Crassostrea roncana tenuis n. ssp.1
Gastropoda
 Cerithioidea - Turritellidae
Turritella terebralis sulcata
 Neogastropoda - Melongenidae
Melongena cf. cornuta patuloidea1
unclassified
  -
Heligomotoma clavaeforme n. sp.1, Calianassa erecta n. sp.1, Calianassa cf. fraasi1, Brachyuridarum sp.1
Chondrichthyes
 Lamniformes - Lamnidae
Oxyrhina desori praecurso1
Gastropoda
 Cerithioidea - Turritellidae
Turritella (Haustator) vermicularis bijugata n. ssp.
unclassified
  -
Diplochaetes longitubus n. gen. n. sp.
Diplochaetes longitubus n. gen. n. sp.
Gastropoda
 Cerithioidea - Turritellidae
Turritella terebralis applanata
Globothalamea
 Rotaliida - Nonionidae
Nonion costiferum2, Nonion sloanii2
 Rotaliida - Cibicididae
Cibicides sp.2, Cibicides pseudoungerianus2
Cibicides sp.2 Monfort 1808
 Rotaliida - Discorbidae
Valvulineria aegyptina2
Foraminifera
 Nodosariacea - Glandulinidae
Glandulina sp.2
Glandulina sp.2 d'Orbigny 1826
 Rotaliacea - Rotaliidae
Ammonia cf. beccarii2, Ammonia sp.2, Pararotalia inermis2
Ammonia sp.2 Bruennich 1772
  -
"Lenticulina subalata" = Cristellaria subalata2, ? Siphoglobulina sp.2
"Lenticulina subalata" = Cristellaria subalata2 Reuss 1854
 Rotalioidea - Elphidiidae
Elphidium cf. crispum2, Elphidium sp.2
Elphidium sp.2 Monfort 1808
sp. A, sp. B
Nodosariata
 Vaginulinida - Vaginulinidae
Lenticulina simplex2, Lenticulina cf. pseudomamilligerus2, Lenticulina cf. oblonga2, Lenticulina sp.2
Lenticulina sp.2 Lamarck 1804
 Nodosariida - Nodosariidae
Astacolus sp.2
Astacolus sp.2 de Montfort 1808
Foraminifera
 Lituolida - Lituolidae
Textularia sp.2
Textularia sp.2 Defrance 1824
Coccolithophyceae
 Prymnesiophycidae - Prymnesiophycidae
Coccolithus eopelagicus2, Coccolithus formosus2, Discoaster saipanensis2, Discoaster tani2, Braarudosphaera discula2, Braarudosphaera bigelowi2, Zygrhablithus bijugatus2
Coccolithus formosus2 Kamptner 1963
Zygrhablithus bijugatus2 Deflandre and Fert 1954
 Zygodiscales - Zygodiscaceae
Isthmolithus recurvus2
Isthmolithus recurvus2 Deflandre 1954
 Coccolithales - Coccolithaceae
Chiasmolithus sp.2
Chiasmolithus sp.2 Hay et al. 1966
Reticulofenestra
  -
Reticulofenestra coenura2, Reticulofenestra bisecta2
Gymnolaemata
 Cheilostomata - Electridae
Conopeum lamellosum1
Conopeum lamellosum1 Canu and Bassler 1920
 Cheilostomata - Calloporidae
"Grammella crassimarginata" = Crassimarginatella1
"Grammella crassimarginata" = Crassimarginatella1
 Cheilostomata - Schizoporellidae
Schizoporella latisinuata1
Schizoporella latisinuata1 Ulrich and Bassler 1904
Bivalvia
 Cardiida - Tellinidae
Tellina luderitizi n. sp., Tellina cf. serrata, Tellina (Peronaea) oppenheimi n. sp.
Tellina luderitizi n. sp. tellin clam
Tellina cf. serrata Renier 1804 tellin clam
Tellina (Peronaea) oppenheimi n. sp. Böhm 1913 tellin clam
 Cardiida - Mactridae
Mactra (Barymactra) denburgi n. sp., Mactra tumida n. sp.1
Mactra tumida n. sp.1 Bohm 1926 clam
 Cardiida - Gastrochaenidae
Rocellaria sacculus n. sp.1, Rocellaria clausa n. sp.1
Rocellaria sacculus n. sp.1 Bohm 1926 clam
Rocellaria clausa n. sp.1 Bohm 1926 clam
 Pholadida - Myidae
Mya schweinfurthi1
Mya schweinfurthi1 Mayer-Eymar 1887 softshell clam
 Mytilida - Mytilidae
Lithodomus beetzi n. sp.1, Perna sp.1
Lithodomus beetzi n. sp.1 Bohm 1926 mussel
Perna sp.1 Retzius 1788 mussel
 Arcida - Noetiidae
Arca (Noetia) reuningi n. sp.
Arca (Noetia) reuningi n. sp. Böhm 1913 clam
 Arcida - Arcidae
Arca koerti n. sp.
Arca koerti n. sp. Böhm 1913 ark
 Pectinida - Pectinoidae
Pecten sp.
Pecten sp. Müller 1776 scallop
 Ostreida - Ostreidae
Crassostrea rutriformis n. sp.1, Crassostrea cymbaeformis n. sp.1, "Ostrea digitalina" = Cubitostrea digitalina
Crassostrea cymbaeformis n. sp.1 oyster
"Ostrea digitalina" = Cubitostrea digitalina Eichwald 1830 oyster
 Ostreida - Gryphaeidae
Exogyra scheibei n. sp.1
Exogyra scheibei n. sp.1 Bohm 1926 oyster
 Nuculanida - Nuculanidae
"Leda sp." = Nuculana
"Leda sp." = Nuculana Link 1807 pointed nut clam
Gastropoda
 Cerithioidea - Turritellidae
Turritella sp.2, Turritella merenskyi n. sp.1, Archimediella schetteri n. sp.1, Turritella (? Haustator) atlantica n. sp.
Turritella sp.2 Lamarck 1799 turret shell
Turritella merenskyi n. sp.1 Bohm 1926 turret shell
Archimediella schetteri n. sp.1 turret shell
Turritella (? Haustator) atlantica n. sp. Böhm 1913 turret shell
 Cerithioidea - Siliquariidae
"Tenagodes sp." = Tenagodus1
"Tenagodes sp." = Tenagodus1 Guettard 1770 snail
 Sorbeoconcha - Naticidae
Natica exilis n. sp.1
Natica exilis n. sp.1 Bohm 1926 moon snail
 Neogastropoda - Clavatulidae
Turricula excelsa n. sp.1
Turricula excelsa n. sp.1 Bohm 1926 snail
 Neogastropoda - Costellariidae
Vexillum lindequisti n. sp.1
Vexillum lindequisti n. sp.1 Bohm 1926 ribbed mitre
 Neogastropoda - Turbinellidae
Streptosiphon piriformis n. sp.1, Streptosiphon klinghardti n. sp.1, Streptosiphon lotzi n. sp.1
Streptosiphon piriformis n. sp.1 Bohm 1926 snail
Streptosiphon klinghardti n. sp.1 Bohm 1926 snail
Streptosiphon lotzi n. sp.1 Bohm 1926 snail
 Neogastropoda - Buccinidae
Pseudoliva thielei n. sp.1, Pseudoliva leutweini n. sp.1
Pseudoliva thielei n. sp.1 Bohm 1926 true whelk
Pseudoliva leutweini n. sp.1 Bohm 1926 true whelk
 Neogastropoda - Muricidae
Ocinebra dietrichi n. sp.1
Ocinebra dietrichi n. sp.1 Bohm 1926 murex snail
 Neogastropoda - Volutidae
Voluta sp.1
Voluta sp.1 Linnaeaus 1758 volute
 Sorbeoconcha - Cassidae
Sconsia sp.1
Sconsia sp.1 Gray 1847 snail
 Opisthobranchia - Bullidae
Bullinella aff. convoluta1
Bullinella aff. convoluta1 Brocchi 1800 snail
Cephalopoda
 Nautilida - Aturiidae
Aturia lotzi n. sp.
Aturia lotzi n. sp. Böhm 1913
Thecostraca
 Balanomorpha - Balanidae
Balanus sp.
Balanus sp. Da Costa 1778 barnacle
Chondrichthyes
 Plagiostomi - Carcharidae
Rhaibodus rapax n. gen. n. sp.1
Rhaibodus rapax n. gen. n. sp.1 Bohm 1926 elasmobranch
 Odontaspidida - Isuridae
Oxyrhina sp.1
Oxyrhina sp.1 Agassiz 1838 mackerel shark
 Hexanchiformes - Hexanchidae
"Notidanus serratissimus" = Notorhynchus serratissimus1
"Notidanus serratissimus" = Notorhynchus serratissimus1 Agassiz 1843 sevengill shark
 Carcharhiniformes - Scyliorhinidae
Galeus sp.1, Galeus porrectus n. sp.1, Galeus robustus n. sp.1
Galeus sp.1 Schaeffer 1760 cat shark
Galeus porrectus n. sp.1 Bohm 1926 cat shark
Galeus robustus n. sp.1 Bohm 1926 cat shark
 Carcharhiniformes - Galeocerdidae
Galeocerdo sp.1, Galeocerdo latidens1
Galeocerdo sp.1 Müller and Henle 1837 tiger shark
Galeocerdo latidens1 Agassiz 1835 tiger shark
 Carcharhiniformes - Carcharhinidae
Carcharias (Physodon) quartus n. sp.1, "Carcharias (Aprionodon) frequens" = Carcharhinus frequens1
Carcharias (Physodon) quartus n. sp.1 Bohm 1926 requiem shark
"Carcharias (Aprionodon) frequens" = Carcharhinus frequens1 Dames 1883 requiem shark
 Lamniformes - Mitsukurinidae
"Lamna (Odontaspis) cf. elegans" = Striatolamia macrota
"Lamna (Odontaspis) cf. elegans" = Striatolamia macrota Agassiz 1838 goblin shark
 Lamniformes - Odontaspididae
Odontaspis winkleri1, Odontaspis macrota1
Odontaspis winkleri1 Leriche 1905 sand tiger shark
Odontaspis macrota1 Agassiz 1838 sand tiger shark
 Lamniformes - Lamnidae
"Lamna (Odontaspis) cf. contortidens" = Lamna contortidens, Lamna vincenti1, Lamna barnitzkei n. sp.1, Alopecias smithwoodwardi n. sp.1, "Oxyrhina hastalis" = Carcharodon hastalis
"Lamna (Odontaspis) cf. contortidens" = Lamna contortidens Agassiz 1843 mackerel shark
Lamna vincenti1 Winkler 1878 mackerel shark
Lamna barnitzkei n. sp.1 Bohm 1926 mackerel shark
Alopecias smithwoodwardi n. sp.1 Bohm 1926 mackerel shark
"Oxyrhina hastalis" = Carcharodon hastalis Agassiz 1838 white shark
 Squatiniformes - Squatinidae
Squatina prima1
Squatina prima1 Winkler 1874 angel shark
 Heterodontiformes - Heterodontidae
"Cestracion vincenti" = Heterodontus vincenti1
"Cestracion vincenti" = Heterodontus vincenti1 Leriche 1905 bullhead shark
 Euselachii -
Odontorhytis pappenheimi n. sp.1
Odontorhytis pappenheimi n. sp.1 Bohm 1926 elasmobranch
 Rhinopristiformes - Pristidae
Oxypristis ferinus n. sp.1
Oxypristis ferinus n. sp.1 Bohm 1926 sawfish
 Myliobatiformes - Myliobatidae
"Myliobatis cf. dixoni" = Aetomylaeus dixoni1
"Myliobatis cf. dixoni" = Aetomylaeus dixoni1 Agassiz 1843 eagle ray
 Myliobatiformes - Rhinopteridae
Rhinoptera rasilis n. sp.1
Rhinoptera rasilis n. sp.1 Bohm 1926 cownose ray
Actinopteri
 Labriformes - Labridae
Labrodon stromeri n. sp.1
Labrodon stromeri n. sp.1 Bohm 1926
 Spariformes - Sparidae
"Chrysophrys blankenhorni n. sp." = Otolithus (Chrysophris)1
"Chrysophrys blankenhorni n. sp." = Otolithus (Chrysophris)1
 Scombriformes -
Sphyraenodus hastatus n. sp.1
Sphyraenodus hastatus n. sp.1 Bohm 1926
 Blenniiformes - Blenniidae
Paranarrhichas damesi n. gen. n. sp.1
Paranarrhichas damesi n. gen. n. sp.1 Bohm 1926
 Siluriformes - Siluridae
Pimelodus cf. gaudryi1
Pimelodus cf. gaudryi1 Leriche 1901 catfish
 Acanthopterygii -
Cylindracanthus cf. rectus1
1Bohm 1926; 2Siesser and Salmon 1979