5 Works

Data from: The earliest bird-line archosaurs and the assembly of the dinosaur body plan

Sterling J. Nesbitt, Richard J. Butler, Martin D. Ezcurra, Paul M. Barrett, Michelle R. Stocker, Kenneth D. Angielczyk, Roger M. H. Smith, Christian A. Sidor, Grzegorz Niedźwiedzki, Andrey G. Sennikov & Alan J. Charig
The relationship between dinosaurs and other reptiles is well established, but the sequence of acquisition of dinosaurian features has been obscured by the scarcity of fossils with transitional morphologies. The closest extinct relatives of dinosaurs either have highly derived morphologies or are known from poorly preserved or incomplete material. Here we describe one of the stratigraphically lowest and phylogenetically earliest members of the avian stem lineage (Avemetatarsalia), Teleocrater rhadinus gen. et sp. nov., from the...

Data from: An Eocene paraclupeid fish (Teleostei, Ellimmichthyiformes) from Bolca, Italy: the youngest marine record of double-armoured herrings

Giuseppe Marramà, Alexandre F. Bannikov, Jürgen Kriwet & Giorgio Carnevale
A new double‐armoured herring of the clupeomorph order Ellimmichthyiformes, Eoellimmichthys superstes gen. et sp. nov., is described herein based on a single partially complete specimen from the early Eocene Pesciara site of the Bolca Konservat‐Lagerstätte, north‐eastern Italy. The fossil documented herein exhibits a unique combination of features (e.g. ornamentation of the skull bones; medial fusion of the contralateral halves of the neural arches of abdominal vertebrae; teeth on endopterygoid, parhypural fused to the first preural...

Feeding in the Devonian antiarch placoderm fishes: a study based upon morpho-functional analysis of jaws

Zerina Johanson, Oleg Lebedev, Alexander Kuznetsov, Aleksey Tsessarsky, Kate Trinajstic & Farkhad Isakhodzayev
Antiarch placoderm fishes were an abundant component of the Middle Paleozoic vertebrate assemblages. Despite a large number of known taxa and specimens, the morphology and function of the skeletal elements of their jaws is inadequately known. Because of this, questions regarding their feeding modes and their roles in the trophic webs remains open. We present a skeleto-muscular model of the antiarch jaw apparatus with an attempt to reconstruct its potential biomechanical function. The position of...

Burmorussidae, a new family of parasitic wasps (Insecta: Hymenoptera) from mid-Cretaceous Burmese amber

Zhang Qi, Kopylov Dmitry, Rasnitsyn Alexandr, Zheng Yan & Zhang Haichun
A new genus and species, Burmorussus mirabilis, is described based on two specimens from the mid-Cretaceous Burmese amber, and considered to be a specialized parasitic wasp of wood-living hosts. The new taxon is characterized by an orussid-like ocellar crown, big eyes, antennae attached well above the clypeus, and antennal grooves or ventral transverse frontal carinae absent. Additionally, all legs carry a prominent lanceolate lobe on the 3rd tarsomere. A similar structure is found, but organized...

A probable oligochaete from an Early Triassic Lagerstätte of the southern Cis-Urals and its evolutionary implications

Andrey Zhuravlev, Dmitry Shcherbakov, Tarmo Timm, Alexander Tzetlin & Olev Vinn
Oligochaetes, despite their important role in terrestrial ecosystems and a tremendous biomass, are extremely rare fossils. The palaeontological record of these worms is restricted to some cocoons, presumable trace fossils and a few body fossils the most convincing of which are discovered in Mesozoic and Cenozoic strata. The Olenekian (Lower Triassic) siliciclastic lacustrine Petropavlovka Lagerstätte of the southern Cis-Urals yields a number of extraordinary freshwater fossils including an annelid. The segmented body with a secondary...

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  • Institute of Paleontology A A Borisyak
  • Field Museum of Natural History
  • Estonian University of Life Sciences
  • Moscow State University
  • Burke Museum of Natural History and Culture
  • Natural History Museum
  • Nanjing Institute of Geology and Paleontology
  • Linyi University
  • Curtin University
  • Virginia Tech