Team Publications

Publications by the members of the Paleosynthesis Team and Scientific Advisory Board

469 to 474 of 504

19MAY 2020
Team Publications
Ammonite morphology in Western Interior Seaway
“We test for the presence of evolutionary stasis in a species of Late Cretaceous ammonoid cephalopod, Hoploscaphites nicolletii, from the North American Western Interior Seaway. … Correlations between palaeoenvironmental conditions and morphological traits suggests ecophenotypic processes were at play; however, either environmental changes were too minor and/or provided no isolating mechanism to drive speciation.”We test […]“We test for the presence of evolutionary stasis in a species of Late Cretaceous ammonoid cephalopod, Hoploscaphites nicolletii, from the North American Western Interior Seaway. … Correlations between palaeoenvironmental conditions and morphological traits suggests ecophenotypic processes were at play; however, either environmental changes were too minor and/or provided no isolating mechanism to drive speciation.”We test […]
Read more about Ammonite morphology in Western Interior Seaway
14MAY 2020
Team Publications
Beta diversity in soft-bottom environments
“Beta diversity, the compositional variation among communities, is often associated with environmental gradients. Other drivers of beta diversity include stochastic processes, priority effects, predation, or competitive exclusion. Temporal turnover may also explain differences in faunal composition between fossil assemblages. To assess the drivers of beta diversity in reef-associated soft-bottom environments, we investigate community patterns in […]“Beta diversity, the compositional variation among communities, is often associated with environmental gradients. Other drivers of beta diversity include stochastic processes, priority effects, predation, or competitive exclusion. Temporal turnover may also explain differences in faunal composition between fossil assemblages. To assess the drivers of beta diversity in reef-associated soft-bottom environments, we investigate community patterns in […]
Read more about Beta diversity in soft-bottom environments
06MAY 2020
Team Publications
Biostratigraphy and strontium isotope stratigraphy in California
“The San Diego Formation, Pico Formation, Careaga Sandstone, and Foxen Mudstone of southern California are thought to be late Pliocene to early Pleistocene; however, numerical ages have not been determined. Following assessment of diagenetic alteration via multiple methods including scanning electron microscopy (SEM), X-ray diffraction (XRD), and minor elemental concentrations, we attempted to use strontium […]“The San Diego Formation, Pico Formation, Careaga Sandstone, and Foxen Mudstone of southern California are thought to be late Pliocene to early Pleistocene; however, numerical ages have not been determined. Following assessment of diagenetic alteration via multiple methods including scanning electron microscopy (SEM), X-ray diffraction (XRD), and minor elemental concentrations, we attempted to use strontium […]
Read more about Biostratigraphy and strontium isotope stratigraphy in California
30APR 2020
Team Publications
A critical review of Antarcticeras Doguzhaeva, 2017
“Antarcticeras from the Early Eocene of Seymour Island (Antarctica) has recently been described as a representative of the ‘Paracoleoidea’, a previously unknown cephalopod subclass. After reinvestigation of the type material of Antarcticeras nordenskjoeldi Doguzhaeva, 2017, the justification of this new cephalopod subclass is here rejected. Phragmocone characteristics allow alternative interpretations and these justify to consider the poorly mineralized […]“Antarcticeras from the Early Eocene of Seymour Island (Antarctica) has recently been described as a representative of the ‘Paracoleoidea’, a previously unknown cephalopod subclass. After reinvestigation of the type material of Antarcticeras nordenskjoeldi Doguzhaeva, 2017, the justification of this new cephalopod subclass is here rejected. Phragmocone characteristics allow alternative interpretations and these justify to consider the poorly mineralized […]
Read more about A critical review of Antarcticeras Doguzhaeva, 2017
24APR 2020
Team Publications
Phanerozoic marine animal diversity
“Fossils, especially those from marine systems, have long been used to estimate changes in patterns of diversity over time. However, fossils are patchy in their occurrence, so such temporal estimates generally have not included variations due to space. Such a singular examination has the potential to simplify, or even misrepresent, patterns. Close et al. used a spatially […]
Read more about Phanerozoic marine animal diversity
14APR 2020
Team Publications
Sneaking up on ‘enemies’
“Bryozoans offer one of the few systems in which competitive interactions for living space can be studied in the fossil record. Here, we describe the outcome of competitive overgrowths in a 3-million-year-old bryozoan palaeocommunity encrusting shells of the bivalve Anomia simplex from the lower Tamiami Formation in Florida (upper Pliocene, Piacenzian). We found that win–lose overgrowths are […]“Bryozoans offer one of the few systems in which competitive interactions for living space can be studied in the fossil record. Here, we describe the outcome of competitive overgrowths in a 3-million-year-old bryozoan palaeocommunity encrusting shells of the bivalve Anomia simplex from the lower Tamiami Formation in Florida (upper Pliocene, Piacenzian). We found that win–lose overgrowths are […]
Read more about Sneaking up on ‘enemies’