Knowledge

Ghost lineage

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77: 20: 2389: 1958: 1968: 2066: 2401: 109:. It seems that coelacanths have also been around for the past 80 million years but have failed to leave any fossils. The reason for this is their environment, which is deep water near volcanic islands; therefore, these sediments are hard to get to, giving these coelacanths an 80 million year gap or ghost lineage. Another ghost lineage was that of the 36:
existence of the lineage and extrapolating relationships between organisms based on phylogenetic analysis. Ghost lineages assume unseen diversity in the fossil record and serve as predictions for what the fossil record could eventually yield; these hypotheses can be tested by unearthing new fossils or running phylogenetic analyses.
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are related concepts, as both stem from gaps in the fossil record. A ghost lineage is any gap in a taxon's fossil record, with or without reappearance, while a Lazarus taxon is a type of ghost lineage wherein a species is believed to have gone extinct due to an absence of it in the fossil record, but
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is a hypothesized ancestor in a species lineage that has left no fossil evidence, but can still be inferred to exist or have existed because of gaps in the fossil record or genomic evidence. The process of determining a ghost lineage relies on fossilized evidence before and after the hypothetical
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The duration between distinct fossils can be measured and used to derive information about the evolutionary history of a species. A study conducted in 1998 showed that a correlation exists between the diversification of a species and the duration of its ghost lineage; namely that a shorter ghost
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crayfish, a variety of plants, and humans. A study comparing the genomes of 69 modern bonobos and chimpanzees found between .9-4.2% of gene flow from ancient bonobos and an archaic great ape lineage to modern bonobos, allowing researchers to reconstruct 4.8% of this ghost population’s genome.
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When looking back at extinct organisms, there are some groups of organisms (or lineages) that have gaps in their fossil records. These organisms or species may be closely related to one another, but there are no traces in the fossil records or sediment beds that might shed some light on their
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origins. Biologists may infer the existence of ghost lineages by examining sequential stratigraphic units in the fossil record. Fossils can then be mapped onto cladograms and range charts to assess which lineages are missing in the fossil record. A classic example is the
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Furthermore, previous models for European ancestry suggested that European populations descended from two ancient populations, but genetic evidence now suggests that a third “ghost population”, the Ancient North Eurasians, has also contributed to European ancestry.
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It is important to note that ghost lineages and ghost taxa are not the same. A ghost lineage is a one direct connection between the descendant and the ancestor, whereas a ghost taxon has many split descendants.
183:"Whole-genome sequence analysis of a Pan African set of samples reveals archaic gene flow from an extinct basal population of modern humans into sub-Saharan populations" 1690: 60:....I refer to these as ghost lineages because they are invisible to the fossil record." Phylogenetic trees constructed based on fossil records and 362:
Norell MA, Novacek MJ (March 1992). "The fossil record and evolution: comparing cladistic and paleontologic evidence for vertebrate history".
323: 1439: 739: 27:. Thick horizontal lines signify the existence of a fossil record for the respective time and taxa. Thin lines represent ghost lineages. 568:
Kuhlwilm M, Han S, Sousa VC, Excoffier L, Marques-Bonet T (June 2019). "Ancient admixture from an extinct ape lineage into bonobos".
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In 1992, an article stated: "These additional entities are taxa that are predicted to occur by the internal branching structure of
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often give an indication that species with similar phenotypes existed, although its fossil has not been discovered.
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Genetic evidence has revealed ghost populations in many species, including modern bonobos and chimpanzees,
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A selection of gaps within the fossil record of animals having hard body parts. Other notable examples are
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Lorente-Galdos B, Lao O, Serra-Vidal G, Santpere G, Kuderna LF, Arauna LR, et al. (April 2019).
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Taxic Origin and Temporal Diversity: The Effect of Phylogeny, in Extinction and Phylogeny
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then reappears after a period of time. Examples of Lazarus taxa include the famous
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Unmack PJ, Adams M, Bylemans J, Hardy CM, Hammer MP, Georges A (March 2019).
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Langer MC, RincĂłn AD, Ramezani J, SolĂłrzano A, Rauhut OW (October 2014).
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Phylogenetic lineage that is inferred to exist but has no fossil record
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lineage implies that there will be greater species diversification.
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The Mistaken Extinction: Dinosaur Evolution and the Origin of Birds
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10.1666/0094-8373(1998)024[0254:GLAATT]2.3.CO;2
567: 610: 351:. Columbia University Press, New York. pp. 89–118. 2061: 48:, as well as the Philippine naked-backed fruit bat. 347:Norell MA (1992). Novacek MJ, Wheeler QD (eds.). 243:. University of California Museum of Paleontology 2419: 125: 1998: 703: 361: 525: 2005: 1991: 710: 696: 672:"New Branch Added to European Family Tree" 306: 644: 502: 441: 340: 208: 198: 1944:Transgenerational epigenetic inheritance 717: 75: 18: 2420: 346: 321: 264: 1986: 1707:Dialogues Concerning Natural Religion 691: 666: 664: 563: 561: 415: 238: 2400: 458: 411: 409: 260: 258: 234: 232: 230: 228: 134: 13: 1112:Evolutionary developmental biology 661: 558: 14: 2439: 2012: 406: 355: 255: 225: 2399: 2388: 2387: 2240:Phylogenetic comparative methods 2064: 1966: 1957: 1956: 422:Proceedings. 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Freeman. 265:Norell MA (January 1993). 2383: 2355:Phylogenetic nomenclature 2347: 2321: 2273: 2215: 2152: 2081: 2059: 2020: 1952: 1852: 1777: 1681: 1608: 1564: 1419: 1323: 1140: 1099: 1032:Parent–offspring conflict 968: 837:Earliest known life forms 758: 725: 582:10.1038/s41559-019-0881-7 416:Wills MA (October 2007). 307:Dingus L, Rowe T (1998). 200:10.1186/s13059-019-1684-5 1885:Cultural group selection 1749:The eclipse of Darwinism 1721:On the Origin of Species 1696:Transmutation of species 674:. 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1638:Cospeciation 1633:Cladogenesis 1582:Saltationism 1539:Mating types 1462:Color vision 1447:Avian flight 1369:mitochondria 1107:Canalisation 985:Biodiversity 730:Introduction 676:. 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Retrieved 190: 186: 176: 141:allopolypoid 138: 129: 117: 95: 89:Protanguilla 87: 81: 66: 55: 41:Lazarus taxa 38: 32: 30: 25:ichthyosaurs 2360:Crown group 2322:Group types 2053:Systematics 1939:Systematics 1810:Mutationism 1628:Catagenesis 1556:Snake venom 1489:Eusociality 1467:in primates 1457:Cooperation 1385:In animals 1205:butterflies 1178:Cephalopods 1168:Brachiopods 1100:Development 1074:Mate choice 827:Convergence 810:Coevolution 768:Abiogenesis 623:(1): 4730. 247:November 4, 119:Tachiraptor 46:coelacanths 2038:Cladistics 1800:Lamarckism 1778:Philosophy 1701:David Hume 1663:Peripatric 1658:Parapatric 1643:Ecological 1623:Anagenesis 1618:Allopatric 1610:Speciation 1574:Gradualism 1499:Metabolism 1359:chromosome 1349:Eukaryotes 1127:Modularity 1044:Population 970:Population 931:Speciation 909:Panspermia 862:Extinction 857:Exaptation 832:Divergence 805:Cladistics 793:Reciprocal 773:Adaptation 678:2019-12-11 481:: 140184. 333:2019-12-04 169:References 111:averostran 103:lungfishes 99:coelacanth 2375:Supertree 2339:Polyphyly 2334:Paraphyly 2329:Monophyly 2301:Apomorphy 2281:Primitive 2224:PhyloCode 2106:Cladogram 1934:Protocell 1785:Darwinism 1673:Sympatric 1422:processes 1310:Tetrapods 1259:Kangaroos 1185:Dinosaurs 1122:Inversion 1091:Variation 1012:Gene flow 1005:Inclusive 815:Mutualism 760:Evolution 598:139107044 193:(1): 77. 114:theropods 107:tetrapods 2422:Category 2394:Category 2297:Derived 2043:Taxonomy 1962:Category 1837:Vitalism 1832:Theistic 1825:Spandrel 1509:Morality 1504:Monogamy 1379:plastids 1344:Flagella 1300:Reptiles 1281:sea cows 1264:primates 1173:Molluscs 1151:Bacteria 1039:Mutation 972:genetics 948:Taxonomy 894:Mismatch 874:Homology 788:Cheating 783:Altruism 655:30894575 590:31036897 552:83773704 513:26064540 452:17652067 400:26752987 392:17749423 219:31023378 152:See also 72:Examples 2406:Commons 2132:Lineage 1853:Related 1683:History 1544:Meiosis 1479:Empathy 1474:Emotion 1374:nucleus 1315:Viruses 1305:Spiders 1217:Mammals 1200:Insects 1000:Fitness 936:Species 735:Outline 646:6426837 625:Bibcode 504:4448901 483:Bibcode 443:2274967 372:Bibcode 364:Science 282:Bibcode 210:6485163 1972:Portal 1648:Hybrid 1484:Ethics 1326:organs 1288:Plants 1274:lemurs 1269:humans 1254:horses 1244:hyenas 1232:wolves 1227:canids 1161:origin 653:  643:  596:  588:  550:  511:  501:  450:  440:  398:  390:  217:  207:  2370:Basal 2195:UPGMA 2127:Grade 2123:Clade 1435:Death 1430:Aging 1409:brain 1195:Fungi 1156:Birds 1069:Fungi 867:Event 750:Index 594:S2CID 548:S2CID 477:(2). 396:S2CID 270:(PDF) 1922:Tree 1394:hair 1334:Cell 1237:dogs 1222:cats 1212:Life 1190:Fish 1143:taxa 651:PMID 586:PMID 509:PMID 448:PMID 388:PMID 249:2019 215:PMID 86:and 52:Name 2125:vs 1420:Of 1389:eye 1339:DNA 1324:Of 1141:Of 641:PMC 633:doi 578:doi 540:doi 499:PMC 491:doi 438:PMC 430:doi 426:274 380:doi 368:255 290:doi 278:293 205:PMC 195:doi 122:. 2424:: 663:^ 649:. 639:. 631:. 619:. 615:. 592:. 584:. 572:. 560:^ 546:. 536:24 534:. 530:. 507:. 497:. 489:. 473:. 469:. 446:. 436:. 424:. 420:. 408:^ 394:. 386:. 378:. 366:. 326:. 288:. 276:. 272:. 257:^ 227:^ 213:. 203:. 191:20 189:. 185:. 31:A 2006:e 1999:t 1992:v 1598:/ 1589:/ 1580:/ 1576:/ 711:e 704:t 697:v 681:. 657:. 635:: 627:: 621:9 600:. 580:: 574:3 554:. 542:: 515:. 493:: 485:: 475:1 454:. 432:: 402:. 382:: 374:: 336:. 296:. 292:: 284:: 251:. 221:. 197:: 92:.

Index


ichthyosaurs
Lazarus taxa
coelacanths
phylogenetic trees
Darwin's Theory of Evolution

Chronoperates
Protanguilla
coelacanth
lungfishes
tetrapods
averostran
theropods
Tachiraptor
allopolypoid
parthenogenetic
Ghost population
Lazarus taxon
"Whole-genome sequence analysis of a Pan African set of samples reveals archaic gene flow from an extinct basal population of modern humans into sub-Saharan populations"
doi
10.1186/s13059-019-1684-5
PMC
6485163
PMID
31023378



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