'Species' are often treated as existing only at a single specific time slice. In fact, they are
timely limited entities with a beginning, a time of persistence and an end, the consequences …

Paleobiologists reviewing the recent literature on species concepts are likely to come away
with the impression that the fundamental unit of biodiversity is impossible to define in terms …

The Plus ça change model proposes that morphological stasis is the usual response to
widely fluctuating physical environments on geological timescales (until thresholds are …

Bien que l'analyse cladistique ait largement contribué à l'essor de la reconstruction
phylogénétique contemporaine au cours du siècle précédent, l'interprétation des …

The difficulties and hindrances of palaeobiogeography and historical biogeography in its
long, sterile search for centres of origin or ancestral areas of species, leading some authors …

Résumé Nos médias et politiques pour la protection de l'environnement et le
développement durable considèrent la «Biodiversité» seulement au travers de ce que les …

T he theoretical literature on species and speciation has frequently been viewed as chaotic,
onerous, and unenlightening (eg, Hull 1997; Morrison 2011; Harrison 2012), but it remains …

Gradualisme phylétique et équilibres ponctués sont deux hypothèses concurrentes
concernant le rythme et la modalité de l'évolution au niveau spécifique étudiés à une …

Many modern paleobiological analyses are conducted at the generic level, a practice
predicated on the validity of genera as meaningful proxies for species. Uncritical application …

In their technical comment raise several issues, including an important topic affecting most,
or perhaps all, paleoecological studies—the difficulty of determining a reasonable way to …