108:
421:
298:
491:
354:
281:
Christian B. Skovsted; John S. Peel (2007). "Small shelly fossils from the argillaceous facies of the Lower
Cambrian Forteau Formation of western Newfoundland".
462:
486:
341:
501:
506:
496:
455:
393:
245:
type. The outer surface of their shell is smooth, whereas the inner surface has a net-like ridges. They are known from late
448:
107:
481:
309:
380:
398:
238:
102:
385:
367:
359:
165:
372:
432:
246:
178:
152:
475:
250:
242:
61:
36:
332:
420:
81:
46:
254:
119:
86:
428:
326:
299:
Fossil Focus: The place of small shelly fossils in the
Cambrian explosion
139:
76:
71:
56:
51:
41:
346:
91:
66:
129:
303:
307:
215:(Landing & Bartovski 1996) Skovsted & Peel 2007
436:
241:
comprising straight or slightly coiled shells of the
316:
276:
274:
272:
270:
456:
8:
492:Paleozoic life of Newfoundland and Labrador
463:
449:
304:
20:
266:
209:
7:
417:
415:
14:
487:Cambrian animals of North America
419:
106:
1:
283:Acta Palaeontologica Polonica
435:. You can help Knowledge by
223:Zhou & Xiao 1984 (type)
523:
502:Cambrian genus extinctions
414:
507:Prehistoric mollusc stubs
208:
203:
103:Scientific classification
101:
23:
16:Extinct genus of molluscs
497:Paleozoic life of Quebec
381:Paleobiology Database
239:small shelly fossil
32:Late Early Cambrian
444:
443:
427:This prehistoric
409:
408:
368:Open Tree of Life
310:Taxon identifiers
230:
229:
224:
216:
199:
166:Helcionelliformes
514:
465:
458:
451:
423:
416:
402:
401:
389:
388:
376:
375:
363:
362:
350:
349:
337:
336:
335:
305:
291:
290:
278:
222:
214:
197:
190:
177:
164:
151:
111:
110:
96:
33:
29:Temporal range:
21:
522:
521:
517:
516:
515:
513:
512:
511:
472:
471:
470:
469:
412:
410:
405:
397:
392:
384:
379:
371:
366:
358:
353:
345:
340:
331:
330:
325:
312:
295:
294:
280:
279:
268:
263:
196:
188:
175:
162:
149:
105:
97:
95:
94:
89:
84:
79:
74:
69:
64:
59:
54:
49:
44:
39:
31:
30:
27:
17:
12:
11:
5:
520:
518:
510:
509:
504:
499:
494:
489:
484:
482:Helcionellidae
474:
473:
468:
467:
460:
453:
445:
442:
441:
424:
407:
406:
404:
403:
390:
377:
364:
351:
338:
322:
320:
314:
313:
308:
302:
301:
293:
292:
265:
264:
262:
259:
247:Early Cambrian
237:is a genus of
228:
227:
226:
225:
217:
206:
205:
201:
200:
186:
182:
181:
179:Helcionellidae
173:
169:
168:
160:
156:
155:
153:Helcionelloida
147:
143:
142:
137:
133:
132:
127:
123:
122:
117:
113:
112:
99:
98:
90:
85:
80:
75:
70:
65:
60:
55:
50:
45:
40:
35:
34:
28:
15:
13:
10:
9:
6:
4:
3:
2:
519:
508:
505:
503:
500:
498:
495:
493:
490:
488:
485:
483:
480:
479:
477:
466:
461:
459:
454:
452:
447:
446:
440:
438:
434:
431:article is a
430:
425:
422:
418:
413:
400:
395:
391:
387:
382:
378:
374:
369:
365:
361:
356:
352:
348:
343:
339:
334:
328:
324:
323:
321:
319:
315:
311:
306:
300:
297:
296:
289:(4): 729β748.
288:
284:
277:
275:
273:
271:
267:
260:
258:
256:
252:
251:North America
249:rocks across
248:
244:
243:helcionelloid
240:
236:
235:
221:
218:
213:
210:
207:
202:
198:Runnegar 1980
195:
194:
187:
184:
183:
180:
174:
171:
170:
167:
161:
158:
157:
154:
148:
145:
144:
141:
138:
135:
134:
131:
128:
125:
124:
121:
118:
115:
114:
109:
104:
100:
93:
88:
83:
78:
73:
68:
63:
58:
53:
48:
43:
38:
26:
22:
19:
437:expanding it
426:
411:
317:
286:
282:
233:
232:
231:
220:M. rostratum
219:
211:
192:
191:
24:
18:
318:Mackinnonia
234:Mackinnonia
212:M. taconica
193:Mackinnonia
25:Mackinnonia
476:Categories
261:References
255:Greenland
126:Kingdom:
120:Eukaryota
333:Q6724540
327:Wikidata
204:Species
172:Family:
140:Mollusca
136:Phylum:
130:Animalia
116:Domain:
429:mollusc
399:1421002
373:4969070
360:1208360
347:3246231
185:Genus:
159:Order:
146:Class:
394:WoRMS
355:IRMNG
433:stub
386:7947
342:GBIF
253:and
37:Preκ
478::
396::
383::
370::
357::
344::
329::
287:52
285:.
269:^
257:.
87:Pg
464:e
457:t
450:v
439:.
189:β
176:β
163:β
150:β
92:N
82:K
77:J
72:T
67:P
62:C
57:D
52:S
47:O
42:κ
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
