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200:, means the whorls that constitute the embryonic shell at the apex of the shell, especially when this is clearly distinguishable from the later whorls of the shell, otherwise known as the
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176:. The apex is the first-formed, and therefore the oldest, part of the shell. To be more precise, the apex would usually be where the tip of the
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cephalopods, the pointed end of the shell is called the apex, and shell growth is away from the apex and toward the
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is situated, if that is still present in the adult shell (often it is lost or eroded away).
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is the small, open posterior end, and the opening itself is usually called the
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141:. The apex is the pointed tip (the oldest part) of the shell of a
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Where this feature is present, the space under the apex of a
330:. United Kingdom: Dorling Kindersley Limited. p. 250.
245:
or patelliform (limpet-like) gastropod shell is called the
168:
The word "apex" is most often used to mean the tip of the
281:. The first chamber of the apex is sometimes called the
309:
may be present at the apex of each of the two valves.
207:
Comparison of the apical part and the whole shell of
297:shell is the area around what is most commonly the
49:. Unsourced material may be challenged and removed.
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305:. In some species the embryonic shell or
109:Learn how and when to remove this message
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351:
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650:Flotation devices ("secondary fins")
47:adding citations to reliable sources
18:
13:
942:) → Juvenile → Subadult → Adult •
14:
1491:
1328:Reproductive system of gastropods
1402:
1333:Respiratory system of gastropods
1248:Circulatory system of gastropods
686:Hepatopancreas (digestive gland)
609:
603:
597:
227:
218:
23:
655:Funnel–mantle locking apparatus
34:needs additional citations for
1273:Excretory system of gastropods
1263:Digestive system of gastropods
842:Nuchal folds (occipital folds)
837:Nuchal crest (occipital crest)
319:
268:
156:The apex is used in end-blown
16:Part of the shell of a mollusk
1:
312:
252:
163:
1418:. You can help Knowledge by
1338:Sensory organs of gastropods
1303:Nervous system of gastropods
948:Protoconch (embryonic shell)
237:Limpet-like gastropod shells
7:
1369:Circumesophageal nerve ring
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293:The apex of a valve of a
326:Dance, S. Peter (2022).
188:Coiled gastropod shells
1414:-related article is a
929:Developmental stages:
821:Spadix and antispadix
705:Nephridia ("kidneys")
210:Otukaia kiheiziebisu
43:improve this article
1293:Hypobranchial gland
1241:Internal soft parts
1165:External soft parts
916:Squid giant synapse
58:"Apex" mollusc
1475:Cephalopod zootomy
847:Occipital membrane
720:Pericardial glands
415:Argonautid eggcase
172:of the shell of a
1470:Gastropod anatomy
1427:
1426:
1392:
1391:
1318:Oesophageal pouch
1177:Caudal mucous pit
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785:Suckers and hooks
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710:Nidamental glands
640:Dermal structures
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337:978-0-2415-1551-8
133:) is part of the
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1308:Nidamental gland
1232:Suprapedal gland
1129:Other hard parts
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940:Doratopsis stage
911:Squid giant axon
830:Occipital region
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681:Ctenidia (gills)
676:Branchial hearts
669:Internal anatomy
633:External anatomy
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1480:Gastropod stubs
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1283:Hancock's organ
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907:Nervous system
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852:Olfactory organ
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443:Belemnoid guard
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420:Nautiloid shell
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263:apical aperture
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127:adjectival form
121:In anatomy, an
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898:Chromatophores
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410:Ammonoid shell
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794:Buccal region
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700:Needham's sac
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469:
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463:Spirula shell
461:
459:
458:Gladius (pen)
456:
454:
451:
449:
448:Cirrate shell
446:
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307:prodissoconch
304:
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248:
247:apical cavity
244:
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194:apical whorls
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63:
60: –
59:
55:
54:Find sources:
48:
44:
38:
37:
32:This article
30:
26:
21:
20:
1420:expanding it
1409:
1394:
1045:Periostracum
1009:
928:
857:Nuchal organ
756:Hectocotylus
645:Fins (wings)
551:Body chamber
515:Periostracum
499:
327:
321:
292:
272:
262:
257:The apex of
256:
246:
240:
208:
206:
193:
191:
167:
155:
130:
122:
120:
105:
96:
86:
79:
72:
65:
53:
41:Please help
36:verification
33:
1374:Trochophore
1359:Pseudofeces
1313:Odontophore
1268:Diverticula
1212:Pneumostome
1055:Planispiral
944:Egg fossils
903:Photophores
866:Other parts
811:Odontophore
733:Head &
566:Phragmocone
269:Cephalopods
259:tusk shells
192:The phrase
1459:Categories
1323:Osphradium
1298:Nephridium
1217:Rhinophore
1207:Parapodium
1136:Clausilium
1075:Selenizone
1065:Protoconch
1015:Body whorl
878:Statocysts
715:Osphradium
453:Cuttlebone
379:Cephalopod
313:References
283:protoconch
253:Scaphopods
202:teleoconch
198:protoconch
182:protoconch
164:Gastropods
151:cephalopod
99:April 2023
69:newspapers
1412:gastropod
1354:Epiphragm
1258:Ctenidium
1146:Operculum
1141:Love dart
1105:Umbilicus
1070:Sculpture
1050:Peristome
1025:Columella
988:Gastropod
936:Paralarva
763:Tentacles
576:Siphuncle
535:Umbilicus
520:Sculpture
425:Orthocone
275:orthocone
243:patellate
180:shell or
178:embryonic
174:gastropod
147:scaphopod
143:gastropod
1187:Cnidosac
1005:Aperture
801:Aptychus
773:Dactylus
544:Internal
495:Aperture
488:External
481:Features
436:Internal
403:External
289:Bivalves
279:aperture
1384:Veliger
1364:Torsion
990:anatomy
891:General
691:Ink sac
556:Camerae
530:Sutures
381:anatomy
295:bivalve
158:conches
139:mollusk
83:scholar
1227:Siphon
1197:Mentum
1192:Mantle
1182:Cerata
1156:Radula
1100:Suture
1020:Callus
816:Radula
768:Carpus
625:funnel
622:&
620:Mantle
581:Whorls
505:Callus
468:Stylet
334:
328:Shells
131:apical
85:
78:
71:
64:
56:
1410:This
1347:Other
1202:Notum
1151:Pearl
1120:Whorl
1115:Varix
1110:Valve
1090:Spire
1060:Plait
1040:Nacre
997:Shell
932:Spawn
778:Manus
736:limbs
571:Septa
561:Nacre
525:Spire
510:Lirae
396:Types
388:Shell
196:, or
170:spire
149:, or
137:of a
135:shell
90:JSTOR
76:books
1416:stub
1253:Crop
1035:Lira
1010:Apex
873:Eyes
806:Beak
751:Arms
693:and
660:Tail
500:Apex
332:ISBN
303:beak
299:umbo
123:apex
62:news
1030:Lip
695:ink
301:or
273:In
45:by
1461::
946:•
934:→
285:.
265:.
249:.
213::
204:.
160:.
153:.
145:,
129::
1447:e
1440:t
1433:v
1422:.
980:e
973:t
966:v
938:(
371:e
364:t
357:v
340:.
125:(
112:)
106:(
101:)
97:(
87:·
80:·
73:·
66:·
39:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
