| Vampyronassa Temporal range:
Middle Jurassic
| |
|---|---|
| |
| Pyritized fossil of Vampyronassa rhodanica from Voulte-sur-Rhône, France. | |
Scientific classification
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Order: | Vampyromorphida |
| Family: | Vampyroteuthidae |
| Genus: | †
Vampyronassa Fischer & Riou, 2002 |
| Species: | †V. rhodanica
|
| Binomial name | |
| †Vampyronassa rhodanica | |
Vampyronassa rhodanica ("vampire fish trap") is an extinct vampyromorph cephalopod known from around 20 fossils from the Lower Callovian (165–164 Ma) of La Voulte-sur-Rhône, Ardèche, France. [1]
Morphology
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Vampyronassa reached total length about 10 cm (3.9 in). [2] This taxon differs from the modern vampire squid in having longer first dorsal arms, a larger hyponome, and a more elongated mantle. The original description noted possible luminous organs [1] which a restudy could not confirm. [2] It had eight arms with uniserial suckers flanked by cirri, same as modern vampire squid. Retractile filaments that is known from modern vampire squid is not known in Vampyronassa. [2] Like vampire squid, Vampyronassa lacked an ink sac. [2]
Classification
Vampyronassa shares some characters with modern vampire squid Vampyroteuthis, such as lack of ink sac and unique type of sucker attachment. [2] Analysis supports the sister relationship between Vampyronassa and Vampyroteuthis. [2]
Palaeoecology
Although modern vampire squid are deep-sea opportunistic detritivore and zooplanktivore, Vampyronassa is estimated to have been an active predator following a pelagic mode of life according to characteristics of its arms. [2] Considering Oligocene vampyromorph Necroteuthis probably had a deep-sea mode of life, [3] initial shift of vampiromorphs to offshore environments was possibly driven by onshore competition. [2]
References
- ^ a b Fischer, Jean-Claude; Riou, Bernard (2002-01-01). "Vampyronassa rhodanica nov. gen. nov sp., vampyromorphe (Cephalopoda, Coleoidea) du Callovien inférieur de la Voulte-sur-Rhône (Ardèche, France)". Annales de Paléontologie (in French). 88 (1): 1–17. Bibcode: 2002AnPal..88....1F. doi: 10.1016/S0753-3969(02)01037-6. ISSN 0753-3969.
- ^ a b c d e f g h Rowe, Alison J.; Kruta, Isabelle; Landman, Neil H.; Villier, Loïc; Fernandez, Vincent; Rouget, Isabelle (2022-06-23). "Exceptional soft-tissue preservation of Jurassic Vampyronassa rhodanica provides new insights on the evolution and palaeoecology of vampyroteuthids". Scientific Reports. 12 (1): 8292. Bibcode: 2022NatSR..12.8292R. doi: 10.1038/s41598-022-12269-3. ISSN 2045-2322. PMC 9225997. PMID 35739131.
- ^ Košťák, Martin; Schlögl, Ján; Fuchs, Dirk; Holcová, Katarína; Hudáčková, Natalia; Culka, Adam; Fözy, István; Tomašových, Adam; Milovský, Rastislav; Šurka, Juraj; Mazuch, Martin (2021-02-18). "Fossil evidence for vampire squid inhabiting oxygen-depleted ocean zones since at least the Oligocene". Communications Biology. 4 (1): 216. doi: 10.1038/s42003-021-01714-0. ISSN 2399-3642. PMC 7893013. PMID 33603225.
| Vampyronassa Temporal range:
Middle Jurassic
| |
|---|---|
|
| |
| Pyritized fossil of Vampyronassa rhodanica from Voulte-sur-Rhône, France. | |
|
Scientific classification
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Order: | Vampyromorphida |
| Family: | Vampyroteuthidae |
| Genus: | †
Vampyronassa Fischer & Riou, 2002 |
| Species: | †V. rhodanica
|
| Binomial name | |
| †Vampyronassa rhodanica | |
Vampyronassa rhodanica ("vampire fish trap") is an extinct vampyromorph cephalopod known from around 20 fossils from the Lower Callovian (165–164 Ma) of La Voulte-sur-Rhône, Ardèche, France. [1]
Morphology
Vampyronassa reached total length about 10 cm (3.9 in). [2] This taxon differs from the modern vampire squid in having longer first dorsal arms, a larger hyponome, and a more elongated mantle. The original description noted possible luminous organs [1] which a restudy could not confirm. [2] It had eight arms with uniserial suckers flanked by cirri, same as modern vampire squid. Retractile filaments that is known from modern vampire squid is not known in Vampyronassa. [2] Like vampire squid, Vampyronassa lacked an ink sac. [2]
Classification
Vampyronassa shares some characters with modern vampire squid Vampyroteuthis, such as lack of ink sac and unique type of sucker attachment. [2] Analysis supports the sister relationship between Vampyronassa and Vampyroteuthis. [2]
Palaeoecology
Although modern vampire squid are deep-sea opportunistic detritivore and zooplanktivore, Vampyronassa is estimated to have been an active predator following a pelagic mode of life according to characteristics of its arms. [2] Considering Oligocene vampyromorph Necroteuthis probably had a deep-sea mode of life, [3] initial shift of vampiromorphs to offshore environments was possibly driven by onshore competition. [2]
References
- ^ a b Fischer, Jean-Claude; Riou, Bernard (2002-01-01). "Vampyronassa rhodanica nov. gen. nov sp., vampyromorphe (Cephalopoda, Coleoidea) du Callovien inférieur de la Voulte-sur-Rhône (Ardèche, France)". Annales de Paléontologie (in French). 88 (1): 1–17. Bibcode: 2002AnPal..88....1F. doi: 10.1016/S0753-3969(02)01037-6. ISSN 0753-3969.
- ^ a b c d e f g h Rowe, Alison J.; Kruta, Isabelle; Landman, Neil H.; Villier, Loïc; Fernandez, Vincent; Rouget, Isabelle (2022-06-23). "Exceptional soft-tissue preservation of Jurassic Vampyronassa rhodanica provides new insights on the evolution and palaeoecology of vampyroteuthids". Scientific Reports. 12 (1): 8292. Bibcode: 2022NatSR..12.8292R. doi: 10.1038/s41598-022-12269-3. ISSN 2045-2322. PMC 9225997. PMID 35739131.
- ^ Košťák, Martin; Schlögl, Ján; Fuchs, Dirk; Holcová, Katarína; Hudáčková, Natalia; Culka, Adam; Fözy, István; Tomašových, Adam; Milovský, Rastislav; Šurka, Juraj; Mazuch, Martin (2021-02-18). "Fossil evidence for vampire squid inhabiting oxygen-depleted ocean zones since at least the Oligocene". Communications Biology. 4 (1): 216. doi: 10.1038/s42003-021-01714-0. ISSN 2399-3642. PMC 7893013. PMID 33603225.