Paleontology and Evolutionary Science

Article commentary

Pseudorhabdosynochus sulamericanus (Monogenea, Diplectanidae), a parasite of deep-sea groupers (Serranidae) occurs transatlantically on three congeneric hosts (Hyporthodus spp.), one from the Mediterranean Sea and two from the western Atlantic

Editor rating: 7 / 10

Marta Riutort –– The article presents new data, both morphological and molecular, supporting a strange pattern of distribution for a parasite. This is probably only a first step but interesting to understand how these animals disperse and differentiate.
The masquerade game: marine mimicry adaptation between egg-cowries and octocorals

Editor rating: 7 / 10

Mauricio Rodriguez-Lanetty –– An interesting study that add to the understanding of the evolution of mimicry in egg-cowrie gastropods and also provides a creative learning tool implementation.
New holostean fishes (Actinopterygii: Neopterygii) from the Middle Triassic of the Monte San Giorgio (Canton Ticino, Switzerland)

Editor rating: 8 / 10

Jérémy Anquetin –– A model of morphological description and interesting ecomorphological study.
Love the one you’re with: replicate viral adaptations converge on the same phenotypic change

Editor rating: 7 / 10

Alexander Mikheyev –– It is a bit inconclusive, but deals with important questions in biology.
Dental microwear reveals mammal-like chewing in the neoceratopsian dinosaur Leptoceratops gracilis

Editor rating: 7 / 10

Mathew Wedel –– The documentation of mammalian-like jaw mechanics in an herbivorous dinosaur is novel and important - it could help explain the ecological dominance of horned dinosaurs in the Cretaceous Period.
The crouching of the shrew: Mechanical consequences of limb posture in small mammals

Editor rating: 7 / 10

John Hutchinson –– Fascinating case of 2 animals of different limb posture but similar dynamics at same speed in some ways, yet divergent in others. Makes sense and adds to our understanding of size, posture and gait.
The systematics of the Mongolepidida (Chondrichthyes) and the Ordovician origins of the clade

Editor rating: 7 / 10

Kenneth De Baets –– The authors convincingly demonstrate that mongolepids - taxa known from scales, can be determined as sharks and they are components of a major radiation of jawed fish that took place in the Silurian. This further demonstrates a major gap in the fossil record of presumed early chondrichthyan lineages with breaks of ~40 Mya and point to diversification event(s) concealed by an incomplete fossil record (possibly a consequence of insufficient sampling, restricted palaeoenvironmental distribution and/or the low-preservation potential of the chondrichthyan endoskeleton).
Observed shifts in the contact zone between two forms of the diving beetle Hydroporus memnonius are consistent with predictions from sexual conflict

Editor rating: 7 / 10

Dezene Huber –– Shows an interesting range expansion of a morphology within a species. Not clear on the reason (authors suggest sexual conflict). But an interesting phenomenon that takes some careful observation to notice, and worth further study.
Geometric morphometric analysis of intratrackway variability: a case study on theropod and ornithopod dinosaur trackways from Münchehagen (Lower Cretaceous, Germany)

Editor rating: 7 / 10

Herbert Maschner –– Trackways are one of the more important areas of paleontological research and this paper develops a suite of techniques to quantify the analysis of ancient trackways.
A review and phylogeny of Scarabaeine dung beetle fossils (Coleoptera: Scarabaeidae: Scarabaeinae), with the description of two Canthochilum species from Dominican amber

Editor rating: 8 / 10

Kenneth De Baets –– This is a nice cross-discipline effort between paleontologist and biologists to calibrate the evolutionary history of scarab beetles. It describes new fossils and using various methods to test their phylogenetic position based on the characters they possess. It should be useful for people working on scarab beetles as well as people working on similar effort for other groups.

Discussing these articles

@NicholasAG72 @TomHoltzPaleo @Dean_R_Lomax @dustydino A few Cretaceous beetle fossils and trace fossils have been attributed to dung beetles, but their identification is not definitive (https://t.co/Ni93dHiur5).

@yamamotoyama555 @GET_AWAY_TRIKE レプトケラトプスでこんな研究がありますね https://t.co/LKJEjGvnL5

https://t.co/HAR1gsJxLW My Pseudorhabdosynochus sulamericanus article was published 1 year ago today in #OpenAccess journal @thePeerJ

'The masquerade game: marine mimicry adaptation between egg-cowries and octocorals' #OpenAccess @thePeerJ https://t.co/k9sT2RShfQ

Press Release: "Aftermath of a mass extinction"
http://www.en.uni-muenchen.de/news/newsarchiv/2016/lopezarbarello_ticinolepis.html

Chew on this! Mammal-like mastication for the dinosaur Leptoceratops
http://blogs.plos.org/paleocomm/2016/07/06/chew-on-this-mammal-like-mastication-for-the-dinosaur-leptoceratops/