48:
180:
is characterized by long siphuncle segments with the free part of the connecting rings only slightly inflated and by a narrow central canal and strongly curved radial canals located in the anterior part of each
403:
462:
390:
342:
Flower R.H. 1968, The First Great
Expansion of the Actinocerids. Part I Memoir 19, New Mexico Bureau of Mines and Mineral Resources, Socorro NM.
346:
472:
477:
467:
311:
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Flower R.H. 1957, Studies of the
Actinocerida. Memoir 2, New Mexico Bureau of Mines and Mineral Resources, Socorro NM.
283:
307:
145:
279:
47:
358:
457:
429:
42:
165:
125:
434:
349:, vol K, Nautiloidea. Curt Teichert and R.C. Moore Eds. University of Kansas Press and the GSA.
416:
408:
208:, once considered the prototypical actinocerid. Flower, (1968) on the other hand, showed that
421:
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during Red River time, near the start of the Late
Ordovician, precluding the inclusion of
451:
161:
112:
285:
A Manual of the
Mollusca; or, A Rudimentary Treatise of Recent and Fossil Shells
220:
214:
381:
198:
89:
30:
182:
99:
59:
250:(?) are associated with the Cape Calhoun fauna in Greenland.(Flower 1957)
375:
239:
79:
34:
395:
69:
352:
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is found in the
Shamattawa limestone of Hudson Bay (Flower 1957)
356:
258:
come from the Middle
Silurian of Michigan (Teichert 1964)
365:
345:Teichert, C. 1964, Actinoceroidea (K190) in the
8:
353:
20:
204:, whose ancestry lay in the direction of
271:
238:is known from the Upper Ordovician and
197:as being derived from the upper Middle
347:Treatise on Invertebrate Paleontology
7:
14:
463:Late Ordovician first appearances
242:of North America and Greenland.
46:
1:
193:Teichert, (1964) indicated
494:
473:Paleozoic life of Manitoba
312:"(Title of paper unknown)"
478:Paleozoic life of Nunavut
288:. Vol. 1. p. 16
43:Scientific classification
41:
23:
16:Extinct genus of molluscs
164:genus included in the
430:Paleobiology Database
29:Temporal range: Upper
468:Silurian extinctions
218:and split off from
176:,(Teichert 1964).
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444:
417:Open Tree of Life
359:Taxon identifiers
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316:Trans. Geol. Soc
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226:Discoactinoceras
212:is derived from
202:Discoactinoceras
170:Discoactinoceras
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21:
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308:Stokes, Charles
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280:Woodward, S. P.
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109:
45:
37:
27:
17:
12:
11:
5:
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248:H occidentalis
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28:
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3:
2:
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252:H paulodolata
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32:
26:
22:
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458:Actinocerida
366:
324:. Retrieved
319:
315:
302:
290:. Retrieved
284:
274:
259:
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251:
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231:Distribution
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177:
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156:
155:
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139:
138:
113:Actinocerida
24:
18:
221:Lambeoceras
215:Actinoceras
168:along with
162:actinocerid
100:Nautiloidea
90:Cephalopoda
452:Categories
266:References
244:H. arctica
206:Polydesmia
199:Ordovician
174:Huroniella
166:Huroniidae
126:Huroniidae
96:Subclass:
31:Ordovician
256:H munuens
183:siphuncle
66:Kingdom:
60:Eukaryota
382:Q5946981
376:Wikidata
310:(1824).
282:(1851).
260:H sepata
240:Silurian
189:Ancestry
185:segment
119:Family:
80:Mollusca
76:Phylum:
70:Animalia
56:Domain:
35:Silurian
422:4154454
409:1409976
396:4625374
367:Huronia
236:Huronia
210:Huronia
195:Huronia
178:Huronia
157:Huronia
148:(1824)
140:Huronia
132:Genus:
106:Order:
86:Class:
25:Huronia
326:28 May
160:is an
146:Stokes
435:12676
404:IRMNG
322:: 203
318:. 2.
292:3 May
391:GBIF
328:2018
294:2018
254:and
246:and
172:and
454::
432::
419::
406::
393::
378::
314:.
330:.
320:i
296:.
136:†
123:†
110:†
33:-
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