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Journal of Systematic Palaeontology
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2.31
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570
Papers 586
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#1Cástor Cartelle (PUC-MG: Pontifícia Universidade Católica de Minas Gerais)H-Index: 10
#2Gerardo De Iuliis (U of T: University of Toronto)H-Index: 18
Last.François Pujos (CONICET: National Scientific and Technical Research Council)H-Index: 16
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Glossotherium phoenesis sp. nov. from the late Pleistocene of intertropical Brazil is described and compared with Glossotherium robustum and Glossotherium tropicorum. Compared to these two species, the main differences occur in the shape of the nasal region and pterygoids, proportionate narrowing of the skull, length and arrangement of the tooth rows, degree of projection and form of the mandibular symphysis, height at various points along the dentary, and proportions of the radius, among others...
#1Christopher R. Poole (UCL: University College London)H-Index: 1
#2Bridget S. Wade (UCL: University College London)H-Index: 27
The extant morphospecies of the Trilobatus sacculifer plexus (T. sacculifer, T. quadrilobatus, T. immaturus and T. trilobus) have widespread biogeographical distributions and long stratigraphical ranges, and are thus routinely utilized in palaeoceanographical studies. The descendant morphospecies Globigerinoidesella fistulosa is comparatively short-ranging (Pliocene–Pleistocene) and an important biostratigraphical marker. However, taxonomic concepts of these morphospecies are inconsistently appl...
#1Zi-Wei Yin (SHNU: Shanghai Normal University)H-Index: 5
#2Zi-Wei Yin (SHNU: Shanghai Normal University)H-Index: 2
Last.Alfred F. Newton (FMNH: Field Museum of Natural History)H-Index: 20
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The ant-like stone beetle supertribe Mastigitae (Staphylinidae: Scydmaeninae) comprises nine extant and five extinct genera that exhibit unusual morphological specializations and ecological adaptions. Recent discoveries of mastigite fossils from Upper Cretaceous–middle Eocene deposits have significantly improved our knowledge of the evolutionary history of this group, yet a direct fossil record for two modern tribes of unclear affinities, i.e. Leptomastacini and Papusini, is lacking. Herein we d...
#1Mengjie Jin (SYSU: Sun Yat-sen University)H-Index: 2
#2Adam Ślipiński (CSIRO: Commonwealth Scientific and Industrial Research Organisation)H-Index: 7
Last.Hong Pang (SYSU: Sun Yat-sen University)H-Index: 11
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†Mesopassandra keyao gen. et sp. nov., representing the first Mesozoic record of the family Passandridae (Coleoptera: Cucujoidea), is here described from Upper Cretaceous Burmese amber. Based on a phylogenetic analysis of 30 adult characters †Mesopassandra was recovered as the sister group to all remaining Passandridae, having a large labrum, bidentate mandibles and presumably 5-5-4 tarsi in the male. It is here placed in a new subfamily, †Mesopassandrinae subfam. nov. Ancestral area was reconst...
#1Romain Sabroux (University of Paris)H-Index: 1
#2Denis Audo (Yunnan University)
Last.Alexandre Hassanin (University of Paris)H-Index: 7
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Sea spiders (Pycnogonida) are strange arthropods characterized by a unique morphology, including reduced body, egg-carrying appendages and a proboscis. This peculiar body plan dates at least as early as the first undoubted occurrence of the group, 425 million years ago in the Silurian. All extant species belong to the order Pantopoda, characterized by cylindrical legs and an unsegmented abdomen. Palaeozoic fossils are much more diversified and exhibit features very different from pantopod morpho...
#1Sangmin Lee (Deakin University)H-Index: 3
#2Guang Rong Shi (Deakin University)H-Index: 31
Last.Jun-ichi TazawaH-Index: 11
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This study reports diverse spiriferellid brachiopods from the Permian rocks of Svalbard and adjacent areas (Arctic Canada and Subpolar Urals of Russia) located at the northern margin of Pangaea. In total, 11 brachiopod species in four genera are recognized and described in detail, including two new species (Spiriferella protodraschei and Arcullina? enokiani). According to our taxonomic investigation, morphological characteristics of the ventral sulcus and dorsal fold are relatively stable within...
#1Romain Garrouste (University of Paris)H-Index: 10
#2André Nel (University of Paris)H-Index: 15
Four ‘routes’, Beringian, De Geer, Thulean and Turgai Strait, are currently considered to explain Cenozoic continental interchanges between Eurasia and North America. These ‘routes’ had a crucial importance for vertebrates and insects. While vertebrates are not infrequent in these zones, there is very little direct evidence of insects to date the migrations and justify particular ‘routes’. A ‘route’ is generally chosen on the basis of indirect evidence, such as molecular dating of clades. Alaska...
#1Jaelyn J. Eberle (CU: University of Colorado Boulder)H-Index: 14
#2William A. Clemens (University of California, Berkeley)H-Index: 8
Last.Patrick S. Druckenmiller (UAF: University of Alaska Fairbanks)H-Index: 14
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The northernmost record of Metatheria, Unnuakomys hutchisoni gen. et sp. nov., is described from the Pediomys Point locality in Upper Cretaceous (lower Maastrichtian) strata of the Prince Creek Formation cropping out along the Colville River on the North Slope of Alaska, USA (70°N). Based on over 60 specimens (including tooth-bearing dentaries and a maxillary fragment), the new taxon is unusual in having two well-developed stylar cusps in the C position flanking the deepest part of the ectoflexu...
#1Eduardo Villalobos-Segura (Birkbeck, University of London)
#2Charlie J. Underwood (Birkbeck, University of London)H-Index: 23
Last.Kerin M. Claeson (Heritage College of Osteopathic Medicine)H-Index: 9
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A new fossil batoid (ray), Asflapristis cristadentis gen. et sp. nov., is described from six exceptionally well-preserved, three-dimensional skeletal remains from the Turonian (Late Cretaceous) of Morocco. Mechanical and acid preparation and computed tomographic scanning of these specimens reveal details of much of the proximal skeleton, especially the skull, synarcual and pectoral skeleton, with only the more distal parts of the skeleton missing. These fossils represent a relatively large anima...
#1Thomas J. Challands (Edin.: University of Edinburgh)H-Index: 8
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Until recently the immediate aftermath of the Hangenberg event of the Famennian Stage (Upper Devonian) was considered to have decimated sarcopterygian groups, including lungfish, with only two taxa, Occludus romeri and Sagenodus spp., being unequivocally recorded from rocks of Tournaisian age (Mississippian, Early Carboniferous). Recent discoveries of numerous morphologically diverse lungfish tooth plates from southern Scotland and northern England indicate that at least 10 dipnoan taxa existed ...
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