Results 21 to 30 of about 828 (171)

A general model fitting coleoid cephalopod growth as a function of time and temperature to a single curve

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, Luis Enrique Angeles‐Gonzalez, Claudia Caamal‐Monsreal, Carlos Rosas   +3 more
wiley   +1 more source

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, Pilar Sánchez, Carla Chicote, Manel Gazo   +3 more
wiley   +1 more source

Large‐Scale Tectonic Forcing of the African Landscape

Journal of Geophysical Research: Earth Surface, Volume 126, Issue 12, December 2021., 2021
Abstract Successful inverse modeling of observed longitudinal river profiles suggests that fluvial landscapes are responsive to continent‐wide tectonic forcing. However, inversion algorithms make simplifying assumptions about landscape erodibility and drainage planform stability that require careful justification.
C. P. B. O’Malley, N. J. White, S. N. Stephenson, G. G. Roberts   +3 more
wiley   +1 more source

Evolutionary–phylogenetic pathway of the Cretaceous ammonite genus Aegocrioceras and its relationship to Juddiceras spp. and Crioceratites spp.

Papers in Palaeontology, Volume 7, Issue 4, Page 2113-2139, November 2021., 2021
Abstract The systematics of ammonoids are complicated by their large degree of intraspecies variation, which complicates a stable validation of species. Aegocrioceras is a heteromorph ammonite from the Lower Saxony Basin in the Hauterivian Boreal, and a prime example of a genus with an unstable internal systematic and external relationship to other ...
Manuel F. G. Weinkauf, René Hoffmann, Kurt Wiedenroth, Dieter Korn   +3 more
wiley   +1 more source

Morphological disparity in extant and extinct sepiid phragmocones: morphological adaptions for phragmocone strength compared to those related to cameral liquid emptying hypotheses

Swiss Journal of Palaeontology, 2022
The phragmocone-bearing coleoid cephalopods Sepia, Sepiella, Metasepia and Hemisepius (sepiids) are the most diverse of all extant chambered cephalopods and show the highest disparity.
Peter D. Ward, Job Lukas Veloso, Christian Klug   +2 more
doaj   +1 more source

Ups and downs of belemnite diversity in the Early Jurassic of Western Tethys

Palaeontology, Volume 64, Issue 2, Page 263-283, March 2021., 2021
Abstract Although belemnites form a major clade of extinct cephalopods, the early stage of their diversification remains poorly known in time and space. Here we investigate the first diversification episodes of belemnites (order Belemnitida) using a new species‐level database encompassing the Hettangian–Aalenian interval (Early Jurassic – earliest ...
Pascal Neige, Robert Weis, Emmanuel Fara, Dieter Korn   +3 more
wiley   +1 more source

Cautionary tales on the use of proxies to estimate body size and form of extinct animals. [PDF]

Ecol Evol
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 ...
Gayford JH, Engelman RK, Sternes PC, Itano WM, Bazzi M, Collareta A, Salas-Gismondi R, Shimada K.   +7 more
europepmc   +2 more sources

The geography of body size in cuttlefishes (Cephalopoda, Sepiidae)

Swiss Journal of Palaeontology, 2021
This study explores body size in sepiids (Cephalopoda, Sepiidae) on the interspecific scale and provides an overview of their geographical distribution. Results reveal a highly skewed distribution of body size variation for raw values and a nearly normal
Pascal Neige
doaj   +1 more source

Hettangian, Early Jurassic coleoids from West Somerset, SW England—filling a gap in the coleoid record of NW Europe [PDF]

Acta Palaeontologica Polonica
The semi-articulated remains of two specimens of the putative diplobelid coleoid species of Clarkeiteuthis and a coleoid of uncertain affinity (possibly a phragmoteuthid) are described from a single bed in the Blue Lias Formation (early Hettangian ...
DAVID H. EVANS, CHRISTIAN KLUG, ANDREW H. KING, KEVIN N. PAGE   +3 more
doaj   +1 more source

APPLYING MICRO-CT IMAGING IN THE STUDY OF HISTORICALLY AND NEWLY COLLECTED SPECIMENS OF BELOSAEPIA (SEPIIDA, COLEOIDEA, CEPHALOPODA) FROM THE EARLY EOCENE (YPRESIAN) OF BELGIUM

Rivista Italiana di Paleontologia e Stratigrafia, 2022
The application of high-resolution X-ray computed tomography permits an appraisal of historically and newly collected specimens of Belosaepia (Belosaepiidae, Coleoidea, Cephalopoda) from the Ypresian (Early Eocene) of Belgium and provides resolution ...
Stijn Goolaerts, YOERI CHRISTIAENS, FREDERIK H. MOLLEN, BERNARD MOTTEQUIN, ETIENNE STEURBAUT   +4 more
doaj   +1 more source