Pseudotriquetrorhabdulus inversus

(Bukry & Bramlette, 1969) Wise & Constans, 1976 May 08, 2025

Set number: 1669

  • Pseudotriquetrorhabdulus inversus VR 025790 1
  • Pseudotriquetrorhabdulus inversus VR 025791 2
  • Pseudotriquetrorhabdulus inversus VR 025792 3
  • Pseudotriquetrorhabdulus inversus VR 025801 4
  • Pseudotriquetrorhabdulus inversus VR 025789 5
  • Pseudotriquetrorhabdulus inversus VR 025795 6
  • Pseudotriquetrorhabdulus inversus VR 025793 7
  • Pseudotriquetrorhabdulus inversus VR 025800 8
  • Pseudotriquetrorhabdulus inversus VR 025798 9
  • Pseudotriquetrorhabdulus inversus VR 025794 10
  • Pseudotriquetrorhabdulus inversus VR 025796 11
  • Pseudotriquetrorhabdulus inversus VR 025799 12
  • Pseudotriquetrorhabdulus inversus VR 025802 13
    10µm
Pseudotriquetrorhabdulus inversus, Middle Eocene, DSDP Leg 39, Sites 354, Ceará Rise, North Atlantic Ocean

Set number: 4476

  • Pseudotriquetrorhabdulus inversus 25842 1
  • Pseudotriquetrorhabdulus inversus 25839 2
  • Pseudotriquetrorhabdulus inversus 25843 3
  • Pseudotriquetrorhabdulus inversus 25846 4
  • Pseudotriquetrorhabdulus inversus 25841 5
  • Pseudotriquetrorhabdulus inversus 25840 6
  • Pseudotriquetrorhabdulus inversus 25844 7
  • Pseudotriquetrorhabdulus inversus 25845 8
    10µm
Pseudotriquetrorhabdulus inversus, Middle Eocene, ODP Leg 171B, Site 1051A, Black Nose, Western North Atlantic

Set number: 4488

  • Pseudotriquetrorhabdulus inversus VR 02929 1
  • Pseudotriquetrorhabdulus inversus VR 02937 2
  • Pseudotriquetrorhabdulus inversus VR 02932 3
  • Pseudotriquetrorhabdulus inversus VR 02936 4
  • Pseudotriquetrorhabdulus inversus VR 02930 5
  • Pseudotriquetrorhabdulus inversus VR 02934 6
  • Pseudotriquetrorhabdulus inversus VR 02931 7
  • Pseudotriquetrorhabdulus inversus VR 02938 8
  • Pseudotriquetrorhabdulus inversus VR 02935 9
  • Pseudotriquetrorhabdulus inversus VR 02933 10
    10µm
Pseudotriquetrorhabdulus inversus, Middle Eocene, DSDP Leg 39, Sites 356, Sào Paulo Plateau, South Atlantic Ocean

Set number: 4487

  • Pseudotriquetrorhabdulus inversus VR 02663 1
  • Pseudotriquetrorhabdulus inversus VR 02666 2
  • Pseudotriquetrorhabdulus inversus VR 02660 3
  • Pseudotriquetrorhabdulus inversus VR 02672 4
  • Pseudotriquetrorhabdulus inversus VR 02662 5
  • Pseudotriquetrorhabdulus inversus VR 02665 6
  • Pseudotriquetrorhabdulus inversus VR 02661 7
  • Pseudotriquetrorhabdulus inversus VR 02671 8
  • Pseudotriquetrorhabdulus inversus VR 02668 9
  • Pseudotriquetrorhabdulus inversus VR 02667 10
  • Pseudotriquetrorhabdulus inversus VR 02669 11
  • Pseudotriquetrorhabdulus inversus VR 02670 12
    10µm
Pseudotriquetrorhabdulus inversus, Middle Eocene, DSDP Leg 39, Sites 356, Sào Paulo Plateau, South Atlantic Ocean

Set number: 4486

  • Pseudotriquetrorhabdulus inversus VR 02446 1
  • Pseudotriquetrorhabdulus inversus VR 02450 2
  • Pseudotriquetrorhabdulus inversus VR 02449 3
  • Pseudotriquetrorhabdulus inversus VR 02456 4
  • Pseudotriquetrorhabdulus inversus VR 02447 5
  • Pseudotriquetrorhabdulus inversus VR 02451 6
  • Pseudotriquetrorhabdulus inversus VR 02448 7
  • Pseudotriquetrorhabdulus inversus VR 02457 8
  • Pseudotriquetrorhabdulus inversus VR 02452 9
  • Pseudotriquetrorhabdulus inversus VR 02453 10
  • Pseudotriquetrorhabdulus inversus VR 02454 11
  • Pseudotriquetrorhabdulus inversus VR 02455 12
    10µm
Pseudotriquetrorhabdulus inversus, Middle Eocene, DSDP Leg 39, Sites 356, Sào Paulo Plateau, South Atlantic Ocean
Final Epithet
Pseudotriquetrorhabdulus inversus (Bukry & Bramlette, 1969) Wise & Constans, 1976
Basionym

Triquetrorhabdulus inversus Bukry & Bramlette, 1969

Synonyms

Pseudotriquetrorhabdulus inversus (Bukry & Bramlette, 1969) Wise in Wise & Constans, 1976 [invalid]

Wiseorhabdus inversus (Bukry & Bramlette 1969) Bukry 1981

Blackites inversus (Bukry & Bramlette, 1969) Bown & Newsam, 2017

Remarks

Triquetrorhabdulus inversus exhibits parallel extinction with length slow (+) elongation, while Blackites display inclined extinction.

References

Bown, P. R. & Newsam, C. 2017. Calcareous nannofossils from the Eocene North Atlantic Ocean (IODP Expedition 342 Sites U1403–1411). Journal of Nannoplankton Research 37(1): 25-60.

Bukry, D., Bramlette, M. N., 1969b. Some new and stratigraphically useful calcareous nannofossils of the Cenozoic. Tulane Studies in Geology 7, 131-142.

Wise, S. W., 1983. Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 71 in the Falkland Plateau region, Southwest Atlantic Ocean. Initial Reports of the Deep Sea Drilling Project 71, 481-550.

Wise, S. W. & Constans, R. E. 1976. Mid Eocene plankton correlations Northern Italy - Jamaica W.I. Transactions of the Gulf-Coast Association of Geological Societies. 26: 144-155.

Taxonomy
Pseudotriquetrorhabdulus
Uncategorised
Biostratigraphy
  • Phanerozoic
    • Cenozoic
      • Paleogene
        • Eocene
          • Middle Eocene
            • Lutetian
              • Lutetian
          • Early Eocene
            • Ypresian
Stratigraphic Range
Ypresian - Lutetian
Zone(s)
NP14 - NP16
Age (Ma)
48.70 - 40.00
Holotype
Pseudotriquetrorhabdulus inversus VR 025790

Triquetrorhabdulus inversus Bukry & Bramlette, 1969

Middle Eocene

JOIDES, Blake Plateau, Atlantic Ocean.