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317:. The fossil specimens already bear strong resemblance to the modern genera. The halosaurs' greatly elongated bodies end in whip-like tails; their scales are large. One small dorsal fin is close to the sharply pointed, mostly scaleless head. The tail fin is greatly reduced, with the anal fin being the largest fin. Their pectoral fins are slender and greatly elongated. Their mouths are somewhat large, with the lower jaw shorter than the upper jaw. The
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system enabling the detection of vibrations in the water is highly developed; the pores run the length of the fish's body. Some species are also known to hold their elongated pectorals erect and forward, possibly providing a further means of detection.
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In life, most halosaurs are grey to bluish-black in colour. Like other notacanthiform fish, halosaurs are able to regenerate their tails easily if lost. This adaptation can be likened to certain terrestrial
336:) is also one of the most deep-living fish, recorded at depths of 3,300 m (11,000 ft). Halosaurs have developed certain adaptations to life at these extreme depths, where no light penetrates. Their
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fish, spending their time cruising over or resting on the sea floor, where temperatures may be just 2-4 °C. They propel themselves with rhythmic, lateral undulations of their bodies, not unlike
249:. Halosaurs are thought to have a worldwide distribution, with some 17 species in three genera represented. Only a handful of specimens have been observed alive, all in chance encounters with
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Aldrovandia oleosa, a New
Species of the Halosauridae, with Observations on Several Other Species of the Family
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281:". Halosaurs have a spotty fossil record, the oldest known genus being
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Collection of genus-group names in a systematic arrangement
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Video footage of a halosaur from NOAA's Ocean
Explorer
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352:. Halosaurs are thought to prey mainly on benthic
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237:found only at great ocean depths. As the family
256:The term "halosaur" refers to the type genus,
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328:The largest species, the 90-cm (3-ft) long
321:is absent in all known species, except for
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251:Remotely operated underwater vehicles
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1749:AC642D14-3A43-FFC1-34F2-FD7ADF862CD7
1710:dd64350b-b26a-499b-9f90-99e07ae56255
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58:Scientific classification
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462:. February 2006 version.
452:; Pauly, Daniel (eds.).
334:Halosauropsis macrochir
1731:Paleobiology Database
454:"Family Halosauridae"
410:"Part 7- Vertebrates"
323:Aldrovandia oleosa
273:meaning "sea" and
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1718:Open Tree of Life
1518:Taxon identifiers
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420:on 5 October 2016
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416:. Archived from
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330:abyssal halosaur
243:Notacanthiformes
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38:Temporal range:
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1785:Halosauridae
1583:Halosauridae
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731:Aulothrissus
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551:Infraclass:
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422:. Retrieved
418:the original
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390:glass lizard
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338:lateral line
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145:Halosauridae
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121:Superorder:
29:
1643:iNaturalist
1550:Wikispecies
1417:Aldrovandia
1390:Notacanthus
1306:Italoalbula
1126:Bullichthys
1032:Promegalops
973:Megalopidae
841:Naiathaelon
791:Eoprotelops
781:Elopsomolos
721:Anaethalion
705:Elopiformes
684:Elopomorpha
650:Elopomorpha
611:Neopterygii
596:Neopterygii
547:Neopterygii
378:cephalopods
366:crustaceans
362:echinoderms
167:Aldrovandia
125:Elopomorpha
1779:Categories
1441:Halosaurus
1343:Pteralbula
1216:Protalbula
1196:Palealbula
1186:Osmeroides
1156:Holcolepis
1116:Brannerion
1022:Paratarpon
962:Protoelops
942:Kipalelops
831:Leptoelops
761:Echinelops
751:Davichthys
659:see below↓
545:Subclass:
510:Elopomorph
396:References
358:polychaete
356:, such as
350:sea snakes
311:California
309:strata of
293:Westphalia
291:strata of
259:Halosaurus
181:Halosaurus
111:Division:
42:to present
1383:Lipogenys
1313:Nemoossis
1256:Casierius
1237:Albulidae
1206:Paraelops
1042:Protarpon
1005:Elopoides
995:Brouweria
952:Lyrolepis
895:Phyllodus
888:Paralbula
874:Egertonia
851:Protelops
638:Teleostei
623:Teleostei
553:Teleostei
527:Kingdom:
287:from the
277:meaning "
227:Halosaurs
115:Teleostei
81:Kingdom:
75:Eukaryota
35:Halosaurs
18:Halosaurs
1541:Q1193126
1535:Wikidata
1501:Category
1451:Laytonia
1012:Megalops
913:Elopidae
801:Epaelops
535:Chordata
533:Phylum:
529:Animalia
459:FishBase
386:reptiles
370:copepods
368:such as
302:Laytonia
233:-shaped
207:Synonyms
189:Laytonia
141:Family:
95:Chordata
91:Phylum:
85:Animalia
71:Domain:
1296:Istieus
1286:Hajulia
539:Class:
424:30 June
360:worms,
346:benthic
307:Miocene
305:, from
297:Germany
158:Genera
150:Günther
131:Order:
101:Class:
1762:125500
1736:265727
1723:925747
1707:NZOR:
1700:143897
1674:161657
1661:113533
1246:Albula
1136:Euroka
512:genera
374:fishes
364:, and
315:Oregon
279:lizard
275:sauros
235:fishes
1757:WoRMS
1744:Plazi
1656:IRMNG
1648:85807
1609:625JN
932:Elops
264:Greek
1695:NCBI
1669:ITIS
1635:9666
1630:GBIF
1622:5416
1591:BOLD
1477:Eels
1475:see
636:see
609:see
582:see
426:2016
376:and
313:and
271:hals
229:are
152:1868
1682:NBN
1617:EoL
1604:CoL
1596:941
1578:AFD
1565:ADW
231:eel
1781::
1759::
1746::
1733::
1720::
1697::
1684::
1671::
1658::
1645::
1632::
1619::
1606::
1593::
1580::
1567::
1552::
1537::
456:.
412:.
380:.
295:,
269:,
253:.
1447:†
1423:†
1339:†
1329:†
1319:†
1302:†
1292:†
1282:†
1272:†
1262:†
1252:†
1222:†
1212:†
1202:†
1192:†
1182:†
1172:†
1162:†
1152:†
1142:†
1132:†
1122:†
1112:†
1102:†
1048:†
1038:†
1028:†
1018:†
1001:†
991:†
981:†
958:†
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938:†
921:†
862:†
847:†
837:†
827:†
817:†
807:†
797:†
787:†
777:†
767:†
757:†
747:†
737:†
727:†
717:†
502:e
495:t
488:v
428:.
332:(
194:†
186:†
20:)
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