3D models related to the publication: The early evolution of cranial appendages in Bovoidea revealed by new species of Amphimoschus (Mammalia: Ruminantia) from China

MorphoMuseuM ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. e151
Author(s):  
Yi-Kun Li ◽  
Bastien Mennecart ◽  
Manuela Aiglstorfer ◽  
Xi-Jun Ni ◽  
Qiang Li ◽  
...  
Keyword(s):  
New Species ◽  
3D Models ◽  
Early Evolution

Early Silurian Benthic Foraminifera from Saudi Arabia - including the oldest known multichambered lituolids

Stratigraphy ◽  
2020 ◽  
pp. 141-185
Author(s):  
Michael A. Kaminski ◽  
Pramudya R. D. Perdana
Keyword(s):  
Saudi Arabia ◽  
New Species ◽  
North America ◽  
Benthic Foraminifera ◽  
Early Evolution ◽  
Foraminiferal Assemblage ◽  
New Findings ◽  
New Finding ◽  
Agglutinated Foraminifera

ABSTRACT: A diverse assemblage of early Silurian agglutinated foraminifera is described from the transitional facies between the Qusaiba and Sharawra Formations of theQalibah Group of Saudi Arabia. The agglutinated foraminiferal assemblage consists of 73 species belonging to 24 genera, and is found in in dark graptolite-bearing claystone of Aeronian age. The assemblage is highly diverse compared with coeval early Silurian assemblages reported from Europe and North America. The assemblage is comprised mainly of species belonging to the monothalamid genera Saccammina, Psammosphaera, Lagenammina, Thurammina, Thuramminoides, Amphitremoida, Bathysiphon, Rhabdammina, and the tubothalamid genera Hyperammina, Tolypammina and Turritellella. The new species Thuramminoides ellipsoidalis n. sp. is described herein, but many of the species left in open nomenclature are also likely to be new. The assemblage also includes rare specimens belonging to the globothalamid (lituolid) genera Ammobaculites and Simobaculites. This new finding revises our understanding of the early evolution of the multichambered globothalamid foraminifera. Although the simple multichambered with rectilinear chamber arrangement are known from the Ordovician, our new findings show that the coiled globothalamids belonging to the order Lituolida are older than previously thought, and were already present in Gondwana by about 440 Ma.

scholarly journals Evolution and palaeoecology of early turtles: a review based on recent discoveries in the Middle Jurassic

2011 ◽  
Vol 182 (3) ◽  
pp. 231-240 ◽  
Author(s):  
Jérémy Anquetin
Keyword(s):  
New Species ◽  
Middle Jurassic ◽  
Morphological Characters ◽  
Early Evolution ◽  
Bone Histology ◽  
Phylogenetic Position ◽  
Crown Group ◽  
Three New Species ◽  
First Time ◽  
Lines Of Evidence

AbstractIn recent years, no less than five new species of early turtles have been described worldwide. Among them are three new turtles from Middle Jurassic deposits that partially fill a previous temporal and morphological gap in our knowledge of the early evolution of these shelled amniotes: Heckerochelys romani, Condorchelys antiqua and Eileanchelys waldmani. For the first time, the phylogenetic position of these three new species is tested in the context of the two presently competing cladistic models of turtle evolution. The addition of these taxa to each matrix does not favour or alter any of the two opposed hypotheses. However, it is demonstrated here that, by documenting yet unknown stages in the evolution of several morphological structures, these three species give stronger support to the model of an extended phylogenetic stem for turtles. These new lines of evidence include the structure of the vomer, the position of the aditus canalis stapedio-temporalis and of the posterior opening of the canalis cavernosus, and the morphology of the processus interfenestralis of the opisthotic.Recent discoveries also reinvigorate the debate about the palaeoecology of early turtles. Whereas simple morphological characters (e.g., shell fontanelle, ligamentous bridge, flattened carapace) can be misleading, forelimb proportions and shell bone histology have led to the conclusion that most stem turtles (i.e., Proganochelys quenstedti, Palaeochersis talampayensis, Proterochersis robusta, Kayentachelys aprix and meiolaniids) were terrestrial forms. At least two out of the five recently described early turtles have been convincingly interpreted as having aquatic habits: Odontochelys semitestacea and Eileanchelys waldmani. More investigation is needed, but this will undoubtedly trigger further debate on the primitive ecology of turtles and on the origin of aquatic habits in testudines (i.e., the crown-group), respectively.

Sinanthobium daohugouense, a tiny new omaliine rove beetle (Coleoptera: Staphylinidae) from the Middle Jurassic of China

2013 ◽  
Vol 145 (5) ◽  
pp. 496-500 ◽  
Author(s):  
Chen-Yang Cai ◽  
Di-Ying Huang
Keyword(s):  
New Species ◽  
Middle Jurassic ◽  
Inner Mongolia ◽  
New Genus ◽  
Direct Evidence ◽  
Early Evolution ◽  
Rove Beetle ◽  
Jiulongshan Formation

AbstractA new rove beetle, Sinanthobium daohugouense, new genus, new species, is described and illustrated on the basis of a tiny impression fossil from the Middle Jurassic Jiulongshan Formation at Daohugou, Inner Mongolia, China. The new genus is placed in the subfamily Omaliinae (Coleoptera: Staphylinidae), tentatively in the Recent tribe Anthophagini. The first find of a definitive omaliine beetle from the Middle Jurassic of China provides direct evidence on the origin and early evolution of Omaliinae.

scholarly journals Systematics of the ant genus Proceratium Roger (Hymenoptera, Formicidae, Proceratiinae) in China – with descriptions of three new species based on micro-CT enhanced next-generation-morphology

ZooKeys ◽  
2018 ◽  
Vol 770 ◽  
pp. 137-192 ◽  
Author(s):  
Michael Staab ◽  
Francisco Hita Garcia ◽  
Cong Liu ◽  
Zheng-Hui Xu ◽  
Evan P. Economo
Keyword(s):  
New Species ◽  
3D Models ◽  
Micro Ct ◽  
Still Images ◽  
3D Surface ◽  
Surface Models ◽  
Scan Data ◽  
Three New Species ◽  
Worker Caste ◽  
Taxonomic System

The genusProceratiumRoger, 1863 contains cryptic, subterranean ants that are seldom sampled and rare in natural history collections. Furthermore, mostProceratiumspecimens are extremely hairy and, due to their enlarged and curved gaster, often mounted suboptimally. As a consequence, the poorly observable physical characteristics of the material and its scarcity result in a rather challenging alpha taxonomy of this group. In this study, the taxonomy of the ChineseProceratiumfauna is reviewed and updated by combining examinations of traditional light microscopy with x-ray microtomography (micro-CT). Based on micro-CT scans of seven out of eight species, virtual 3D surface models were generated that permit in-depth comparative analyses of specimen morphology in order to overcome the difficulties to examine physical material ofProceratium. Eight Chinese species are recognized, of which three are newly described:ProceratiumbruelheideiStaab, Xu & Hita Garcia,sp. n.andP.kepingmaisp. n.belong to theP.itoiclade and have been collected in the subtropical forests of southeast China, whereasP.shoheisp. n.belongs to theP.stictumclade and it is only known from a tropical forest of Yunnan Province.ProceratiumnujiangenseXu, 2006syn. n.is proposed as a junior synonym ofP.zhaoiXu, 2000. These taxonomic acts raise the number of known ChineseProceratiumspecies to eight. In order to integrate the new species into the existing taxonomic system and to facilitate identifications, an illustrated key to the worker caste of all Chinese species is provided, supplemented by species accounts with high-resolution montage images and still images of volume renderings of 3D models based on micro-CT. Moreover, cybertype datasets are provided for the new species, as well as digital datasets for the remaining species that include the raw micro-CT scan data, 3D surface models, 3D rotation videos, and all light photography and micro-CT still images. These datasets are available online (Dryad, Staab et al. 2018, http://dx.doi.org/10.5061/dryad.h6j0g4p).

scholarly journals A new species of basal rhynchosaur (Diapsida: Archosauromorpha) from the early Middle Triassic of South Africa, and the early evolution of Rhynchosauria

2016 ◽  
Vol 177 (4) ◽  
pp. 1030-1030
Author(s):  
Richard J. Butler ◽  
Martín D. Ezcurra ◽  
Felipe C. Montefeltro ◽  
Adun Samathi ◽  
Gabriela Sobral
Keyword(s):  
South Africa ◽  
New Species ◽  
Middle Triassic ◽  
Early Evolution ◽  
Early Middle Triassic ◽  
A New Species

scholarly journals First records and three new species of the family Symphytognathidae (Arachnida, Araneae) from Thailand, and the circumscription of the genus Crassignatha Wunderlich, 1995

ZooKeys ◽  
2021 ◽  
Vol 1012 ◽  
pp. 21-53
Author(s):  
Francisco Andres Rivera-Quiroz ◽  
Booppa Petcharad ◽  
Jeremy A. Miller
Keyword(s):  
New Species ◽  
Dna Sequences ◽  
Phylogenetic Analyses ◽  
Coastal Region ◽  
3D Models ◽  
Morphological Data ◽  
The North ◽  
The Family ◽  
Ct Analysis ◽  
Three New Species

The family Symphytognathidae is reported from Thailand for the first time. Three new species: Anapistula choojaiaesp. nov., Crassignatha seeliamsp. nov., and Crassignatha seedamsp. nov. are described and illustrated. Distribution is expanded and additional morphological data are reported for Patu shiluensis Lin & Li, 2009. Specimens were collected in Thailand between July and August 2018. The newly described species were found in the north mountainous region of Chiang Mai, and Patu shiluensis was collected in the coastal region of Phuket. DNA sequences are provided for all the species here studied. The relations of these symphytognathid species were tested using previously published phylogenetic analyses on micro orb-weavers. Also, we used micro CT analysis to build 3D models of the male genitalia and somatic characters of two species of Crassignatha Wunderlich, 1995. The molecular phylogeny and 3D models were used to discuss the taxonomy and circumscription of the currently valid symphytognathid genera, with focus on Crassignatha and Patu Marples, 1951. Based on this, three new combinations are suggested: Crassignatha bicorniventris (Lin & Li, 2009), comb. nov., Crassignatha quadriventris (Lin & Li, 2009), comb. nov., and Crassignatha spinathoraxi (Lin & Li, 2009), comb. nov. A new record of Crassignatha danaugirangensisMiller et al. 2014 is reported from Brunei.

scholarly journals A new species of basal rhynchosaur (Diapsida: Archosauromorpha) from the early Middle Triassic of South Africa, and the early evolution of Rhynchosauria

2015 ◽  
Vol 174 (3) ◽  
pp. 571-588 ◽  
Author(s):  
Richard J. Butler ◽  
Martín D. Ezcurra ◽  
Felipe C. Montefeltro ◽  
Adun Samathi ◽  
Gabriela Sobral
Keyword(s):  
South Africa ◽  
New Species ◽  
Middle Triassic ◽  
Early Evolution ◽  
Early Middle Triassic ◽  
A New Species

scholarly journals New fossil records of Xyelidae (Hymenoptera) from the Middle Jurassic of Inner Mongolia, China

2021 ◽  
Vol 733 ◽  
pp. 146-159
Author(s):  
Yan Zheng ◽  
Haiyan Hu ◽  
Dong Chen ◽  
Jun Chen ◽  
Haichun Zhang ◽  
...  
Keyword(s):  
New Species ◽  
Middle Jurassic ◽  
Inner Mongolia ◽  
New Genus ◽  
Early Evolution ◽  
Morphological Data ◽  
Ovipositor Sheath ◽  
Two New Species ◽  
Fossil Records

A new genus and two new species of Xyelidae Newman, 1834 (Hymenoptera Linnaeus, 1758), Platyxyela tenuis sp. nov. and Scleroxyela daohugouensis gen. et sp. nov. are described and illustrated from the Middle Jurassic Daohugou Beds of Ningcheng, Inner Mongolia, China. Platyxyela tenuis sp. nov. (Xyelinae Newman, 1834, Liadoxyelini Rasnitsyn, 1966) can be distinguished from its congeners by short forewing length and ovipositor sheath strongly narrowed toward acute apex. Scleroxyela daohugouensis gen. et sp. nov. is placed within Macroxyelinae Ashmead, 1898, Xyeleciini Benson, 1945 based on pterositigma completely sclerotised and costal space sclerotised before ptrostigma, 1-Rs half as long as 1-M, and 1m-cu short. It is the first recorded species of Xyeleciini in Daohugou Beds. Furthermore, an updated key of identification of subfamilies and tribes of Xyelidae is provided. Our findings of new morphological data provide insights into the early evolution of Hymenoptera, as well as effectively enrich our understanding of the diversity of Xyelidae in the Mesozoic.

scholarly journals Atolchelys lepida , a new side-necked turtle from the Early Cretaceous of Brazil and the age of crown Pleurodira

2014 ◽  
Vol 10 (7) ◽  
pp. 20140290 ◽  
Author(s):  
Pedro S. R. Romano ◽  
Valéria Gallo ◽  
Renato R. C. Ramos ◽  
Luzia Antonioli
Keyword(s):  
New Species ◽  
Early Cretaceous ◽  
Cladistic Analysis ◽  
Early Evolution ◽  
Phylogenetic Position ◽  
Molecular Clocks ◽  
Minimum Age

We report a new pleurodiran turtle from the Barremian Morro do Chaves Formation, Sergipe-Alagoas Basin, Brazil. We tested the phylogenetic position of Atolchelys lepida gen. et sp. nov. by including it in a comprehensive cladistic analysis of pleurodires. The new species is a basal member of Bothremydidae and simultaneously the oldest unambiguous crown Pleurodira. The biogeographic and chronostratigraphic significance of the finding has implications for the calibration of molecular clocks studies by pushing back the minimum age of crown Pleurodira by more than 12 Ma ( ca 125 Ma). The reanalysis of Pelomedusoides relationships provides evidence that the early evolution and relationships among the main lineages of side-necked turtles can be explained, at least partially, by a sequence of vicariance events.

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