[HTML][HTML] Renewed perspectives on the sedentary-pelagic last common bilaterian ancestor
AV Martynov, TA Korshunova - Contributions to Zoology, 2022 - brill.com
Various evaluations of the last common bilaterian ancestor (lcba) currently suggest that it
resembled either a microscopic, non-segmented motile adult; or, on the contrary, a complex …
resembled either a microscopic, non-segmented motile adult; or, on the contrary, a complex …
[HTML][HTML] Orthoceratoid and coleoid cephalopods from the Middle Triassic of Switzerland with an updated taxonomic framework for Triassic Orthoceratoidea
Orthoconic cephalopods are subordinate, but persistent, widespread and regionally
abundant components of Triassic marine ecosystems. Here, we describe unpublished …
abundant components of Triassic marine ecosystems. Here, we describe unpublished …
Putting the F into FBD analysis: tree constraints or morphological data?
The fossilized birth–death (FBD) process provides an ideal model for inferring phylogenies
from both extant and fossil taxa. Using this approach, fossils are directly integrated into the …
from both extant and fossil taxa. Using this approach, fossils are directly integrated into the …
[HTML][HTML] Proposed Early Cambrian cephalopods are chimaeras, the oldest known cephalopods are 30 my younger
Fossils record the lowest known occurrence of mollusc classes in the Cambrian Evolutionary
Radiation (ie, terminal Ediacaran–Cambrian, ca. 550–488 Ma). A very early occurrence of …
Radiation (ie, terminal Ediacaran–Cambrian, ca. 550–488 Ma). A very early occurrence of …
[HTML][HTML] 'Arm brains'(axial nerves) of Jurassic coleoids and the evolution of coleoid neuroanatomy
Although patchy, the fossil record of coleoids bears a wealth of information on their soft part
anatomy. Here, we describe remains of the axial nerve cord from both decabrachian …
anatomy. Here, we describe remains of the axial nerve cord from both decabrachian …
Stability–maneuverability tradeoffs provided diverse functional opportunities to shelled cephalopods
DJ Peterman, KA Ritterbush - Integrative Organismal Biology, 2022 - academic.oup.com
Stability–maneuverability tradeoffs impose various constraints on aquatic locomotion. The
fossil record houses a massive morphological dataset that documents how organisms have …
fossil record houses a massive morphological dataset that documents how organisms have …
Bayesian inference reveals a complex evolutionary history of belemnites
Belemnites are an extinct group of Mesozoic coleoid cephalopods, common in Jurassic and
Cretaceous marine sedimentary rocks. Despite their significance, their total group phylogeny …
Cretaceous marine sedimentary rocks. Despite their significance, their total group phylogeny …
Phylogeny of the longest existing gastropod clade (Pleurotomariida) reconstructed with Bayesian and parsimony methods and its implications on gastropod shell …
Evolutionary relationships of fossil gastropods have largely been inferred using taxonomic
systematics. Phylogenetic relationships between extinct gastropod groups and their …
systematics. Phylogenetic relationships between extinct gastropod groups and their …
[HTML][HTML] Plectronoceratids (Cephalopoda) from the latest Cambrian at Black Mountain, Queensland, reveal complex three-dimensional siphuncle morphology, with …
The Plectronoceratida includes the earliest known cephalopod fossils and is thus
fundamental to a better understanding of the origin and early evolution of this group of …
fundamental to a better understanding of the origin and early evolution of this group of …
Nautilid beaks: unsuspected disparity and palaeoecological interpretation
Nautiluses are key to understanding the evolution of cephalopods, as they are their only
outer-shelled modern representatives. Their chitinous beaks possess a calcified tip on the …
outer-shelled modern representatives. Their chitinous beaks possess a calcified tip on the …