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Did you mean confront【古生】;confronts【古生】 (37,941 results)?
Conodont pearls?
Glenister BF, Klapper G, Chauff KM. Glenister BF, et al. Science. 1976 Aug 13;193(4253):571-3. doi: 10.1126/science.193.4253.571. Science. 1976. PMID: 17759585
Conodonts are zoologically enigmatic, toothlike phosphatic microfossils occurring in marine sedimentary rocks ranging in age from Cambrian to Triassic. ...Mineralogy, morphology, and occurrence of these spheres suggest that they are pearls secreted by the conodont-b …
Conodonts are zoologically enigmatic, toothlike phosphatic microfossils occurring in marine sedimentary rocks ranging in age from Cam …
Evolution and development of teeth.
McCollum M, Sharpe PT. McCollum M, et al. J Anat. 2001 Jul-Aug;199(Pt 1-2):153-9. doi: 10.1046/j.1469-7580.2001.19910153.x. J Anat. 2001. PMID: 11523817 Free PMC article. Review.
Complex structures with dentine and enamel have been described in the earliest jawless vertebrates, conodonts. Such fossils have been used to suggest that teeth and jaws have evolved and developed independently. ...
Complex structures with dentine and enamel have been described in the earliest jawless vertebrates, conodonts. Such fossils have been …
The 'Tully monster' is a vertebrate.
McCoy VE, Saupe EE, Lamsdell JC, Tarhan LG, McMahon S, Lidgard S, Mayer P, Whalen CD, Soriano C, Finney L, Vogt S, Clark EG, Anderson RP, Petermann H, Locatelli ER, Briggs DE. McCoy VE, et al. Nature. 2016 Apr 28;532(7600):496-9. doi: 10.1038/nature16992. Epub 2016 Mar 16. Nature. 2016. PMID: 26982721
Its phylogenetic position has remained uncertain and it has been compared with nemerteans, polychaetes, gastropods, conodonts, and the stem arthropod Opabinia. Here we review the morphology of Tullimonstrum based on an analysis of more than 1,200 specimens. ...
Its phylogenetic position has remained uncertain and it has been compared with nemerteans, polychaetes, gastropods, conodonts, and th …
A high-resolution record of early Paleozoic climate.
Goldberg SL, Present TM, Finnegan S, Bergmann KD. Goldberg SL, et al. Proc Natl Acad Sci U S A. 2021 Feb 9;118(6):e2013083118. doi: 10.1073/pnas.2013083118. Proc Natl Acad Sci U S A. 2021. PMID: 33526667 Free PMC article.
We find good agreement of bulk rock [Formula: see text] with brachiopod and conodont [Formula: see text] trends through time. Given evidence that the [Formula: see text] value of seawater has not evolved substantially through the Phanerozoic, we interpret this record as pr …
We find good agreement of bulk rock [Formula: see text] with brachiopod and conodont [Formula: see text] trends through time. Given e …
The acquisition of myelin: a success story.
Zalc B. Zalc B. Novartis Found Symp. 2006;276:15-21; discussion 21-5, 54-7, 275-81. doi: 10.1002/9780470032244.ch3. Novartis Found Symp. 2006. PMID: 16805421 Review.
The close association between the apparition of a hinged-jaw and the myelin sheath has led to speculation that among the devonian fishes that have disappeared today, the jawless conodonts and ostracoderms were not myelinated, and that myelin was first acquired by the oldes …
The close association between the apparition of a hinged-jaw and the myelin sheath has led to speculation that among the devonian fishes tha …
The conodont controversies.
Aldridge RJ, Purnell MA. Aldridge RJ, et al. Trends Ecol Evol. 1996 Nov;11(11):463-8. doi: 10.1016/0169-5347(96)10048-3. Trends Ecol Evol. 1996. PMID: 21237922
The discovery of fossilized conodont soft tissues has led to suggestions that these enigmatic animals were among the earliest vertebrates and that they were macrophagous, using their oropharyngeal skeletal apparatus to capture and process prey. These conclusions have prove …
The discovery of fossilized conodont soft tissues has led to suggestions that these enigmatic animals were among the earliest vertebr …
Conodont affinity and chordate phylogeny.
Donoghue PC, Forey PL, Aldridge RJ. Donoghue PC, et al. Biol Rev Camb Philos Soc. 2000 May;75(2):191-251. doi: 10.1017/s0006323199005472. Biol Rev Camb Philos Soc. 2000. PMID: 10881388 Review.
Current information on the conodonts Clydagnathus windsorensis (Globensky) and Promissum pulchrum Kovacs-Endrody, together with the latest interpretations of conodont hard tissues, are reviewed and it is concluded that sufficient evidence exists to justify interpret …
Current information on the conodonts Clydagnathus windsorensis (Globensky) and Promissum pulchrum Kovacs-Endrody, together with the l …
Growth and feeding ecology of coniform conodonts.
Leonhard I, Shirley B, Murdock DJE, Repetski J, Jarochowska E. Leonhard I, et al. PeerJ. 2021 Dec 14;9:e12505. doi: 10.7717/peerj.12505. eCollection 2021. PeerJ. 2021. PMID: 34993015 Free PMC article.
Conodonts were the first vertebrates to develop mineralized dental tools, known as elements. Recent research suggests that conodonts were macrophagous predators and/or scavengers but we do not know how this feeding habit emerged in the earliest coniform conodonts …
Conodonts were the first vertebrates to develop mineralized dental tools, known as elements. Recent research suggests that conodon …
Nanomechanical variability in the early evolution of vertebrate dentition.
Shohel M, Ray KK, Tivanski AV, McAdams NEB, Bancroft AM, Cramer BD, Forbes TZ. Shohel M, et al. Sci Rep. 2022 Jun 17;12(1):10203. doi: 10.1038/s41598-022-14157-2. Sci Rep. 2022. PMID: 35715512 Free PMC article.
Conodonts are an extinct group of primitive jawless vertebrates whose elements represent the earliest examples of a mineralized feeding apparatus in vertebrates. Their relative relationship within vertebrates remains unresolved. As teeth, conodont elements are not h …
Conodonts are an extinct group of primitive jawless vertebrates whose elements represent the earliest examples of a mineralized feedi …
Paleotemperature record of the Middle Devonian Kačák Episode.
Suttner TJ, Kido E, Joachimski MM, Vodrážková S, Pondrelli M, Corradini C, Corriga MG, Simonetto L, Kubajko M. Suttner TJ, et al. Sci Rep. 2021 Aug 16;11(1):16559. doi: 10.1038/s41598-021-96013-3. Sci Rep. 2021. PMID: 34400691 Free PMC article.
Reconstruction of the seawater temperature contributes to a better understanding of the climate conditions marine biota were exposed to during the event interval. To date, conodont apatite-based paleotemperatures across the Eifelian-Givetian boundary interval have been pub …
Reconstruction of the seawater temperature contributes to a better understanding of the climate conditions marine biota were exposed to duri …
82 results