Alexander W. A. Kellner
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View article: First dercetid fish from the Upper Cretaceous of Antarctica
First dercetid fish from the Upper Cretaceous of Antarctica Open
Aulopiformes, a clade including lizardfishes and allies, comprise a long-standing marine lineage from the Early Cretaceous to the Recent. We describe Antarctichthys longipectoralis gen. et sp. nov. from the late Campanian marine strata of …
View article: Can useful biomarker information be obtained from museum fossil specimens treated with Paraloid® B-72 acrylic resin?
Can useful biomarker information be obtained from museum fossil specimens treated with Paraloid® B-72 acrylic resin? Open
View article: Continuous presence of dinosauromorphs in South America throughout the Middle to the Late Triassic
Continuous presence of dinosauromorphs in South America throughout the Middle to the Late Triassic Open
The dawn of dinosaurs is marked by the appearance of the saurischian lineages in the Late Triassic fossil record, around 230 million years ago. This early burst of diversification of the group is majoritarily represented by sauropodomorphs…
View article: Wing bone laminarity in Pterosaurs: insights into torsional adaptations for flight evolution
Wing bone laminarity in Pterosaurs: insights into torsional adaptations for flight evolution Open
Powered flight has evolved separately in three tetrapod clades: pterosaurs, birds (avian dinosaurs), and bats. To meet the challenges of powered flight, tetrapods acquired structural, mechanical, and physiological adaptations. Circumferent…
View article: Bad Science – what is in the pipeline?
Bad Science – what is in the pipeline? Open
View article: 2024 - an interesting year for the Annals of the Brazilian Academy of Sciences
2024 - an interesting year for the Annals of the Brazilian Academy of Sciences Open
View article: Cretaceous Pterosaurs of the Araripe Basin: A Comprehensive Taxonomic Update and Paleobiological Insights
Cretaceous Pterosaurs of the Araripe Basin: A Comprehensive Taxonomic Update and Paleobiological Insights Open
More than fifty years after the first discoveries of pterosaurs in the Araripe Basin, this sedimentary unit remains one of the most informative windows into the diversity and biology of these fantastic flying reptiles. With dozens of propo…
View article: A new species of Darwinopterus (Wukongopteridae, Pterosauria) from western Liaoning provides some new information on the ontogeny of this clade
A new species of Darwinopterus (Wukongopteridae, Pterosauria) from western Liaoning provides some new information on the ontogeny of this clade Open
The Wukongopteridae is an important pterosaur clade from the Yanliao Biota, combining features of basal and derived pterosaurs. So far, the Wukongopteridae consists of five species divided into three genera: Wukongopterus lii, Darwinopteru…
View article: The AABC 2025 Impact Factor
The AABC 2025 Impact Factor Open
View article: Exploring the complex cranial morphology of Tupandactylus imperator (Pterodactyloidea, Tapejaridae) based on a new specimen
Exploring the complex cranial morphology of Tupandactylus imperator (Pterodactyloidea, Tapejaridae) based on a new specimen Open
Tupandactylus imperator, a striking tapejarid pterosaur from the Lower Cretaceous (Aptian) Crato Formation (Araripe Basin), is renowned for its extraordinary cranial crest, one of the proportionally largest among pterosaurs and, indeed, al…
View article: Haliskia peterseni, a new anhanguerian pterosaur from the late Early Cretaceous of Australia
Haliskia peterseni, a new anhanguerian pterosaur from the late Early Cretaceous of Australia Open
Pterosaur remains have been reported from every continent; however, pterosaur skeletons remain rare. A new pterosaur is presented here, Haliskia peterseni gen. et sp. nov., constituting the most complete specimen from Australia from the up…
View article: New insights into pterosaur cranial anatomy: X-ray imaging reveals palatal structure and evolutionary trends
New insights into pterosaur cranial anatomy: X-ray imaging reveals palatal structure and evolutionary trends Open
View article: New challenges ahead in scientific publishing
New challenges ahead in scientific publishing Open
View article: A brief assessment of the influence of Animal Science in the Impact Factor of the AABC
A brief assessment of the influence of Animal Science in the Impact Factor of the AABC Open
View article: Cretaceous spreite-dominated ichnoassemblages in Antarctica
Cretaceous spreite-dominated ichnoassemblages in Antarctica Open
This study investigates ichnoassemblages characterized by spreite trace fossils from the Upper Cretaceous Snow Hill Island Formation on Vega Island, Antarctica. The succession reveals alternating heterolithic beds of sandy siltstones to ve…
View article: Contribution of the special issue on the BRICS Astronomy Working Group to the AABC impact factor
Contribution of the special issue on the BRICS Astronomy Working Group to the AABC impact factor Open
View article: Biological collections in danger?
Biological collections in danger? Open
The importance of biological collections has been emphasized several times in the literature (e.g., Suarez & Tsutsui 2004) and there is a general feeling that these specimens -some obtained with great difficulty-, are considered important …
View article: A new book on Evolution
A new book on Evolution Open
View article: Bioestratinomic Classification and Genesis of Shell Beds (Coquinas) from the Santa Marta Formation (Upper Cretaceous) of James Ross Island, Antarctica
Bioestratinomic Classification and Genesis of Shell Beds (Coquinas) from the Santa Marta Formation (Upper Cretaceous) of James Ross Island, Antarctica Open
Shell beds, or coquinas, have a complex origin, limiting their utility in paleoecology. However, such accumulations can serve as crucial paleoenvironmental indicators, since their bioestratinomic and diagenetic properties explain the physi…
View article: Anthropocene epoch proposal rejected - does it really matter?
Anthropocene epoch proposal rejected - does it really matter? Open
As has reported for some time now, several researchers have embraced the idea that we currently live in a time so different from last centuries that we should separate it into a distinct geological time unit.Specialists who fall under the …
View article: Contribution of a special issue on Antarctic research to the AABC impact factor
Contribution of a special issue on Antarctic research to the AABC impact factor Open
View article: A new toothless pterosaur from the Early Cretaceous Jehol Biota with comments on the Chaoyangopteridae
A new toothless pterosaur from the Early Cretaceous Jehol Biota with comments on the Chaoyangopteridae Open
The Chaoyangopteridae is a clade of azhdarchoid pterosaurs that stands out in China, particularly in the Jehol Biota, as a Cretaceous group of medium-sized and high-crested pterosaurs. Herein, we describe a new species, Meilifeilong youhao…
View article: A new gnathosaurine (Pterosauria, Archaeopterodactyloidea) from the Late Jurassic of Portugal
A new gnathosaurine (Pterosauria, Archaeopterodactyloidea) from the Late Jurassic of Portugal Open
An incomplete, yet remarkably-sized dentated rostrum and associated partial cervical vertebrae of a pterosaur (ML 2554) were recently discovered from the Late Jurassic (Late Kimmeridgian-Early Tithonian) Lourinhã Formation of Praia do Cani…
View article: New reptile shows dinosaurs and pterosaurs evolved among diverse precursors
New reptile shows dinosaurs and pterosaurs evolved among diverse precursors Open
View article: A Cápsula do Tempo do Museu Nacional/UFRJ: uma iniciativa para a preservação da memória acadêmica, cultural e científica
A Cápsula do Tempo do Museu Nacional/UFRJ: uma iniciativa para a preservação da memória acadêmica, cultural e científica Open
Este artigo tem como objetivo problematizar a iniciativa de uma instituição museológica bicentenária – o Museu Nacional, em relação à idealização e confecção de sua Primeira Cápsula do Tempo. O Museu Nacional sofreu um incêndio de fortes p…
View article: MEU AMIGO JORGE CALVO!
MEU AMIGO JORGE CALVO! Open
Por volta das 11h30min do dia 10 de janeiro de 2023 faleceu o Dr. Jorge Orlando Calvo em um hospital de Neuquén, Argentina, onde estava internado desde o início do mês. Tendo desenvolvido uma excelente relação com a sua ex-mulher, que esta…
View article: The Santa Filomena meteorite shower: Trajectory, classification, and opaque phases as indicators of metamorphic conditions
The Santa Filomena meteorite shower: Trajectory, classification, and opaque phases as indicators of metamorphic conditions Open
On August 19, 2020, at 13:18—UTC, a meteor event ended as a meteorite shower in Santa Filomena, a city in the Pernambuco State, northeast Brazil. The heliocentric orbital parameters resulting from images by cameras of the weather broadcast…
View article: Ankylosaurian body armor function and evolution with insights from osteohistology and morphometrics of new specimens from the Late Cretaceous of Antarctica
Ankylosaurian body armor function and evolution with insights from osteohistology and morphometrics of new specimens from the Late Cretaceous of Antarctica Open
The body armor of ankylosaurians is a unique morphological feature among dinosaurs. While ankylosaurian body armor has been studied for decades, paleohistological analyses have only started to uncover the details of its function. Yet there…
View article: A new issue of the AABC focused on Antarctic research
A new issue of the AABC focused on Antarctic research Open
View article: To charge or not to charge, that is the question!
To charge or not to charge, that is the question! Open
Year after year, the issue of charging for publications (and there are several ways to do it) continues to haunt the scientific publishing industry.Researchers, publishers, and funding agencies face this dilemma, and no consensual solution…