Results 41 to 50 of about 236 (131)

Evolutionary origin of teeth [PDF]

, 2019
Teeth and jaws have been widely perceived as key innovations underpinning the adaptive radiation and the evolutionary success of jawed vertebrates. However, the origin, evolution, and developmental evolution of teeth are all the subject of controversy ...
Donoghue, Philip, Rucklin, Martin
core   +2 more sources

A new Groenlandaspidid Arthrodire (Vertebrata: Placodermi) from the Famennian of Belgium [PDF]

, 2005
A new species of the arthrodire genus Groenlandaspis is described from the upper part of the Evieux Formation (Upper Famennian), based on several specimens collected from quarries at Modave and Villers-le-Temple,Liège Province, Belgium.
Clément, G, Janvier, P
core   +1 more source

A novel specimen-based mid-Paleozoic dataset of antiarch placoderms (the most basal jawed vertebrates)

Earth System Science Data, 2023
Abstract. Antiarcha data are essential to quantitative studies of basal jawed vertebrates. The absence of structured data on key groups of early vertebrates, such as Antiarcha, has lagged in understanding their diversity and distribution patterns. Previous works of early vertebrates usually focused on anatomy and phylogeny, given their significant ...
Z. Pan, Z. Niu, Z. Xian, M. Zhu, M. Zhu, M. Zhu   +5 more
openaire   +3 more sources

A critical appraisal of appendage disparity and homology in fishes [PDF]

, 2019
Fishes are both extremely diverse and morphologically disparate. Part of this disparity can be observed in the numerous possible fin configurations that may differ in terms of the number of fins as well as fin shapes, sizes and relative positions on the ...
Abel O., Adam H., Agulnik S. I., Albert J. S., Aldridge R. J., Aldridge R. J., Allen G. R., Alves‐Gomes J. A., Andrews E. A., Aristotle, Aristotle, Arsenault M., Arsenault M., Azariah J., Balfour F. M., Balfour F. M., Bardack D., Belon P., Bemis W. E., Bigelow H. B., Bigelow H. B., Bigelow H. B., Blieck A., Blieck A., Blieck A., Blom H., Bridge T. W., Brito P. M., Brugghen W., Burrow C. J., Burrow C. J., Burrow C. J., Burrow C. J., Burrow C. J., Béchard I., Carr R. K., Chen J. Y., Cloutier R., Cloutier R., Cloutier R., Coates M. I., Coates M. I., Compagno L. J. V., Cuvier G., Cuvier G., Cuvier G., Denison R. H., Denison R. H., Denison R. H., Denison R. H., Didier D. A., Dineley D. L., Dineley D. L., Dingerkus G., Dollo L., Duméril A. M. C., Dzik J., Dzik J., Eeden F. J. M., Ferraris C., Fink W. L., Fischer W., Forey P. L., Forey P. L., Fowler H. W., Fricke R., Friedman M., Froese R., Gagnier P.‐Y., Gagnier P.‐Y., Gagnier P.‐Y., Gagnier P.‐Y., Gagnier P.‐Y., Gagnier P.‐Y., Gai Z.‐K., Garman S., Garstang W., Garstang W., Gayet M., Gayet M., Gegenbaur C., Ginter M., Goodrich E. S., Goodyear R. H., Gormon J. R., Goujet D., Goujet D., Goüan A., Gray J. E., Greenwood P. H., Grogan E. D., Günther A. C. L. G., Hairapetian V., Hall B. K., Hall B. K., Halstead B. W., Halstead L. B., Halstead L. B., Hanke G. F., Hanke G. F., Hanke G. F., Hanke G. F., Hanke G. F., Hardisty M. W., Hedges S. B., Heidtke U., Heintz A., Heintz A., Heintz A., Hennig W., Herdman W. A., Hopson J. A., Hubbs C. L., Hulley P. A., Isaac A., Janvier P., Janvier P., Janvier P., Janvier P., Janvier P., Janvier P., Janvier P., Janvier P., Janvier P., Janvier P., Jarvik E., Jarvik E., Jarvik E., Jayaram K. C., Jayaram K. C., Jefferies R. P. S., Jefferies R. P. S., Jessen H. L., Jessen H. L., Johansson P. K. E., Johnson G. D., Jordan D. S., Jordan D. S., Kaup J. J., Kawaguchi K., Kemp N. E., Kiaer J., Kiaer J., Kirkaldy J. W., Koenen A., Kowalevsky A. O., Kuo C.‐H., Lacépède B. G. E., Lankester E. R., Lankester E. R., Lankester E. R., Lauder G. V., Lehtola K. A., Liu Y., Lund R., Lund R., Luo H. L., Mabee P. M., Mallatt J., McCosker J. E., McCosker J. E., McMillan C. B., McNeill Alexander R., Meek S. E., Miles R. S., Miles R. S., Miyashita T., Märss T., Novitskaya L. I., O'Shaughnessy K. L., Owen R., Owen R., Owen R., Pan J., Patterson C., Patterson C., Pietsch T. W., Pletcher F. T., Poplin C., Poss S. G., Potvin‐Leduc D., Potvin‐Leduc D., Renaud C. B., Richardson L. R., Richardson L. R., Ritchie A., Ritchie A., Ritchie A., Ritchie A., Ritchie A., Roberts T. R., Rondelet G., Rosenberger L. J., Rowe T., Ruvinsky I., Sansom I. J., Schaeffer B., Schaeffer B., Schmalhausen J. J., Schultze H.‐P., Schultze H.‐P., Schultze H.‐P., Shu D. G., Siebert D. J., Smith M. P., Stensiö E. A., Stensiö E. A., Stensiö E. A., Stensiö E. A., Stensiö E. A., Sweet W. C., Tanaka M., Tarlo L. B., Tarlo L. B., Taverne L., Thacher J. K., Tinker S. W., Trueb L., Turner S., Turner S., Turner S., Turner S., Turner S., Vorobyeva E. I., Vorobyeva E. I., Vézina D., Walcott C. D., Walcott C. D., Webb P. W., Westoll T. S., Westoll T. S., White E. I., Wilson M. V. H., Wisner R. L., Wisner R. L., Wängsjö G., Young G. C., Young G. C., Zajíc J., Zangerl R., Zangerl R., Zhu M., Zhu M., Zidek J., Zittel K. A., Žigaitė Ž.   +245 more
core   +1 more source

A new tubalepid fish (Antiarcha, Placodermi) from the Middle Devonian of Huize, Yunnan, China

Swiss Journal of Palaeontology
A new genus and species of tubalepid antiarch, Tongdulepis concavus gen. et sp. nov., is described from the Middle Devonian (Qujing Formation, late Eifelian) in Huize County, Qujing, northeastern Yunnan, China.
Yanchao Luo, Zhaohui Pan, Min Zhu
doaj   +1 more source

Development, Anatomy, and Phylogenetic Relationships of Jawless Vertebrates and Tests of Hypotheses about Early Vertebrate Evolution [PDF]

, 2018
The origin and early evolution of vertebrates remain one of the central questions of comparative biology. This clade, which features a breathtaking diversity of complex forms, has generated profound, unresolved questions, including: How are major ...
Miyashita, Tetsuto
core   +2 more sources

Reinterpreting the age of the uppermost ‘Old Red Sandstone’ and Early Carboniferous in Scotland [PDF]

, 2019
In Scotland, the base of the Ballagan Formation has traditionally been placed at the first grey mudstone within a contiguous Late Devonian to Carboniferous succession.
Bennett, Carys E., Browne, Michael A.E., Davies, Sarah J., Kearsey, Timothy I., Marshall, John E.A., Millward, David, Reeves, Emma J., Smithson, Timothy R.   +7 more
core   +1 more source

A new species of the antiarch Microbrachius from the Middle Devonian (Givetian) of Belarus

Estonian Journal of Earth Sciences, 2017
A new antiarch species Microbrachius kedoae n. sp. is described from the Middle Devonian (Givetian) of Belarus. The species is based on isolated dermal plates recovered from a borehole near the village of Gavrilchitsy about 25 km southwest of the city of Soligorsk.
Elga Mark-Kurik, Michael J. Newman, Ursula Toom, Jan L. den Blaauwen   +3 more
openaire   +2 more sources

Evolution and Development of the Vertebrate Mechanosensory Lateral Line [PDF]

The mechanosensory lateral line is a crucial sensory system ancestrally present in all vertebrate lineages. Identifiable in the earliest vertebrate fossils, lateral lines have been evolving for half a million years through major morphological ...
Venkataraman, Vishruth
core   +1 more source

Trait-based diversification shifts reflect differential extinction among fossil taxa [PDF]

, 2014
Evolution provides many cases of apparent shifts in diversification associated with particular anatomical traits. Three general models connect these patterns to anatomical evolution: (i) elevated net extinction of taxa bearing particular traits, (ii ...
Estabrook, George F., Wagner, Peter J.
core   +6 more sources