Results 11 to 20 of about 206 (131)
Evolution of the Cdk4/6–Cdkn2 system in invertebrates [PDF]
Genes to Cells, Volume 29, Issue 11, Page 1037-1051, November 2024.Hypothesis on the evolution of the Cdkn2 locus. (a) Loss of Cdkn2 occurred multiple times. (b) Evolution of microsynteny at the Cdkn2 locus. Cdkn2e is a hypothetical transient gene. Abstract The cell cycle is driven by cyclin‐dependent kinases (Cdks). The decision whether the cell cycle proceeds is made during G1 phase, when Cdk4/6 functions.
Shiori Yuki +5 more
wiley +2 more sources
Cephalopod palaeobiology: evolution and life history of the most intelligent invertebrates [PDF]
Swiss Journal of Palaeontology, 2022 Sigurd von Boletzky was a cephalopod researcher who was world-renowned for his enthusiasm for his field of research, for his friendly and calm personality, and, of course, his publications.
Christian Klug +6 more
doaj +2 more sources
Failed prey or peculiar necrolysis? Isolated ammonite soft body from the Late Jurassic of Eichstätt (Germany) with complete digestive tract and male reproductive organs [PDF]
Swiss Journal of Palaeontology, 2021 Ammonoid soft parts have been rarely described. Here, we document the soft parts of a perisphinctid ammonite from the early Tithonian of Wintershof near Eichstätt (Germany). This exceptional preservation was enabled by the special depositional conditions
Christian Klug +3 more
doaj +2 more sources
Orthoceratoid and coleoid cephalopods from the Middle Triassic of Switzerland with an updated taxonomic framework for Triassic Orthoceratoidea [PDF]
Swiss Journal of PalaeontologyOrthoconic cephalopods are subordinate, but persistent, widespread and regionally abundant components of Triassic marine ecosystems. Here, we describe unpublished specimens from the Anisian (Middle Triassic) Besano Formation at Monte San Giorgio ...
Alexander Pohle, Christian Klug
doaj +2 more sources
Cretaceous Research, 2012 Abstract The phylogenetic origin of the Sepiida is still unclear. The presumed derivation from diplobelid belemnoids can be tested by comparison of their initial chambers (protoconchs). The first investigation of a juvenile phragmocone of the diplobelid Conoteuthis hayakawai from the Cenomanian of Hokkaido (northern Japan) yielded surprising ...
Dirk Fuchs, Frank Wiese
exaly +3 more sources
Cautionary tales on the use of proxies to estimate body size and form of extinct animals [PDF]
Ecology and Evolution, Volume 14, Issue 9, September 2024.Reconstructing the body size and form of extinct animals is of vital importance to our understanding of macroevolution and palaeontology. This is often done using anatomical proxies where extinct species are known only from fragmentary remains. However, there are many limitations influencing the selection of proxy taxa that are frequently overlooked ...
Joel H. Gayford +7 more
wiley +2 more sources
Triassic coleoid beaks and other structures from the Calcareous Alps revisited [PDF]
Acta Palaeontologica Polonica, 2022 We performed comprehensive study of seven Carnian, Late Triassic specimens of a coleoid cephalopod Phragmoteuthis bisinuata, on which Suess based his hypothesis on “beaks of P. bisinuata”. Using SEM/EDS, we found that “beaks of P.
LARISA A. DOGUZHAEVA +4 more
doaj +1 more source
Aquaculture, Fish and Fisheries, Volume 3, Issue 6, Page 539-549, December 2023., 2023 1. A novel general model has been developed to fit biomass growth data of coleoid cephalopods as a function of time and temperature. 2. The model calculates when the growth curve inflection occurs and when the maximum size is reached. 3. When the model was parameterized as a function of temperature on Octopus maya fitness, it confirmed the optimal ...
Ángel Escamilla‐Aké +3 more
wiley +1 more source
Phylogeny and systematics of the Coleoidea [PDF]
Paleontological Contributions: New Series (1992-2009), 1994 15 p., 4 fig.
Doyle, P., Donovan, D. T., Nixon, M.
openaire +2 more sources
Cephalopods in the diet of Risso's dolphin (Grampus griseus) from the Mediterranean Sea: A review
Marine Mammal Science, Volume 38, Issue 2, Page 725-741, April 2022., 2022 Abstract The Risso's dolphin, Grampus griseus, is a deep‐sea cetacean with a predominantly teuthophagous diet. Its distribution in the northwest Mediterranean is generally in deeper waters, but there is little information on diet or feeding areas. To extend knowledge of the diet of G.
Amanda Luna +3 more
wiley +1 more source