The new taxa named in the first paper are:
Luciasuchus lurusinqa gen. et sp. nov.
Rodeosuchus machukiru gen. et sp. nov.
On Mon, Oct 19, 2020 at 12:28 PM Ben Creisler <bcreisler@gmail.com> wrote:
Ben CreislerSome recent non-dino papers:I don't have access to the full text so I'm notÂsure if the "three new species" are named...StÃphane Jouve, Christian de Muizon, Ricardo Cespedes-Paz, VÃctor Sossa-Soruco & Stephane Knoll (2020)
The longirostrine crocodyliforms from Bolivia and their evolution through the Cretaceous-Palaeogene boundary.
Zoological Journal of the Linnean Society, zlaa081 (advance online publication)
doi: https://doi.org/10.1093/zoolinnean/zlaa081
https://academic.oup.com/zoolinnean/advance-article-abstract/doi/10.1093/zoolinnean/zlaa081/5930140
Numerous aquatic crocodyliforms have been found during the last four decades of fieldwork in the Maastrichtian El Molino and Palaeocene Santa LucÃa Formations in Bolivia. We describe new material in detail and review previously described specimens. This work enables identification of at least three new Palaeocene dyrosaurid species and the reassignment of the Maastrichtian crocodylian Dolichochampsa minima to Gavialoidea. Dolichochampsa minima is thus the oldest known South American member of this clade; previously, gavialoids were known from this continent only since the late Eocene. A new phylogenetic analysis suggests that Vectisuchus leptognathus and Elosuchus are more closely related to Dyrosauridae, and a new name, Dyrosauroidea, is proposed for this clade. Several characters previously considered as typical for dyrosaurids are present in Elosuchus. Comparison of this phylogenetic analysis with geographical and temporal distributions helps to reveal a new scenario for dyrosaurid dispersal. A high number of intercontinental interchanges occurred during the Maastrichtian, whereas higher intracontinental diversification occurred during the lower Palaeocene.==Birgit Szabo, Daniel W. A. Noble & Martin J. Whiting (2020)
Learning in nonâavian reptiles 40âyears on: advances and promising new directions.
Biological Reviews (advance online publication)
doi: https://doi.org/10.1111/brv.12658
https://onlinelibrary.wiley.com/doi/10.1111/brv.12658
Recently, there has been a surge in cognition research using nonâavian reptile systems. As a diverse group of animals, nonâavian reptiles [turtles, the tuatara, crocodylians, and squamates (lizards, snakes and amphisbaenids)] are good model systems for answering questions related to cognitive ecology, from the role of the environment on the brain, behaviour and learning, to how social and lifeâhistory factors correlate with learning ability. Furthermore, given their variable social structure and degree of sociality, studies on reptiles have shown that group living is not a preâcondition for social learning. Past research has demonstrated that nonâavian reptiles are capable of more than just instinctive reactions and basic cognition. Despite their ability to provide answers to fundamental questions in cognitive ecology, and a growing literature, there have been no recent systematic syntheses of research in this group. Here, we systematically, and comprehensively review studies on reptile learning. We identify 92 new studies investigating learning in reptiles not included in previous reviews on this topic â affording a unique opportunity to provide a more inâdepth synthesis of existing work, its taxonomic distribution, the types of cognitive domains tested and methodologies that have been used. Our review therefore provides a major update on our current state of knowledge and ties the collective evidence together under nine umbrella research areas: (i) habituation of behaviour, (ii) animal training through conditioning, (iii) avoiding aversive stimuli, (iv) spatial learning and memory, (v) learning during foraging, (vi) quality and quantity discrimination, (vii) responding to change, (viii) solving novel problems, and (ix) social learning. Importantly, we identify knowledge gaps and propose themes which offer important future research opportunities including how cognitive ability might influence fitness and survival, testing cognition in ecologically relevant situations, comparing cognition in invasive and nonâinvasive populations of species, and social learning. To move the field forward, it will be immensely important to build upon the descriptive approach of testing whether a species can learn a task with experimental studies elucidating causal reasons for cognitive variation within and among species. With the appropriate methodology, this young but rapidly growing field of research should advance greatly in the coming years providing significant opportunities for addressing general questions in cognitive ecology and beyond.
=====Alexander N. Kuznetsov (2020)
Reconstructing serial homology with a special emphasis on the nature of limbs in vertebrates and with references to Cruveilhier, Wyman, Belogolowy, and Balinsky.
Journal of Morphology (advance online publication)
doi: https://doi.org/10.1002/jmor.21274
https://onlinelibrary.wiley.com/doi/10.1002/jmor.21274
This analysis was inspired by the recent paper by Siomava et al. (2020) who attempted to deconstruct the serial homology concept, but retain the special homology. The criticism against this attempt is presented based on reconsideration of the original Owen's trinitarian concept of the general, serial, and special homology, and on a number of evidence on the vertebrate limbs serial homologies and on the vertebrate occiput special homologies which are currently missed by the morphologist community. The research of Belogolowy (1911) proved that the concept of special homology can be deconstructed with the same reasoning as suggested by Siomava et al. (2020) against the serial homology concept. It is argued that the deconstruction attempts come from wrong expectations in respect of homology. It is argued, that, due to developmental singularities, such as the zygote, or spore, or bud (in vegetative reproduction), the true homogeny is possible for genes only. The organs do not arise from organs, and therefore their genetic basis, and hence homology, can be changed in the developmental singularities. Thus, the morphological homology is not static. It can be acquired and it can evolve. Genetically, the evolution of morphological homologies can be thought of as a succession of coâoptions. The evidence for a succession of serial homologies in vertebrate limbs is suggested. It is argued that homology and analogy have a sense only in relation to each other. When two correspondences between two organs exist simultaneously, the older (deeper in time) is homology, and the newer (more superficial) is analogy. In this conceptual framework of evolvable homology, neither of the three Owen's types of homology can be abandoned. Three respective types of analogy should be added--the general analogy, the serial analogy, and the special analogy.