108:
366:
595:
lacks eyes and facial sutures. The cephalic border carries one or two pairs of marginal spines. The glabella does not reach the border furrow and has two short pit-like pairs of lateral furrows. Occipital and genal spines are present. Thorax unknown, but all weymouthiids in which it is known have
512:
Rasetti (1966, p. 13, pl. 7, figs 1–6) is part of a trilobite faunule that was collected from unnamed limestone beds which form several outcrops on a hill (Griswold farm) about 1 mile southeast of North
Chatham, Columbia County, New York State, USA; the faunule is referred to as the
443:
but slightly”, although several of the characteristics in the former genus that he listed, include the preoccipital glabellar and anterolateral cephalic spines, and the configuration of the lateral glabellar furrows.
419:
include a sharply tapered and pointed glabella, no occipital spine, tubercles confined to posterior part of the cephalic border, strongly inflated genae, and a sculpture of tightly packed coarse granules.
424:
is characterised by an inflated posterior part of the glabella, the loss of anterolateral cephalic spines and a preoccipital glabellar node, and in having a very narrow cephalic border.
960:
881:
734:
WESTROP, S. R.; LANDING, E. (2011). "Lower
Cambrian (Branchian) eodiscoid trilobites from the lower Brigus Formation, Avalon Peninsula, Newfoundland, Canada".
407:
include anterolateral cephalic spines and a large preoccipital glabellar tubercle or spine. Both of these features have been considered as being diagnostic of
300:= late Lower Cambrian Stage 4 (upper of two stages subdividing the unnamed Series 2); the upper Botomian boundary corresponds to base of the Middle Cambrian,
623:
868:
950:
712:
499:
672:
KOBAYASHI T. 1943. Brief notes on the
Eodiscids 1, their classification with a description of a new species and a new variety.
456:
is known from the Lower
Cambrian of the United States (unnamed formation, East Chatham Quad, Columbia County, New York State
945:
776:
955:
940:
502:, University of Cambridge and was collected by Rushton from about 450' above base of the Purley Shale Formation (
635:
334:
hexa "six" and acanthos "spine", for having two pairs of border spines in addition to one pair of genal spines.
757:(2005). "5. Comparative morphology and relationships of the Agnostida". In Koenemann, S.; Jenner, R. (eds.).
459:
935:
836:
907:
122:
912:
656:
RASETTI, F., 1966. New Lower
Cambrian trilobite faunule from the Taconic sequence of New York.
894:
886:
899:
559:
506:
Biozone) at Camp Hill, St. Paul's Church, Stockingford, Nuneaton, Warwickshire, England .
754:
400:
365:
331:
225:
816:
RUSHTON, A.W.A. 1966. The
Cambrian Trilobites from the Purley Shales of Warwickshire.
107:
929:
521:
faunule is notable for the number and variety of trilobites of the family
Eodiscidae.
293:
205:
65:
807:. Revised, Volume 1 – Trilobita – Introduction, Order Agnostida, Order Redlichiida.
384:
234:
777:"East Chatham Quad, unnamed fm., NY (Cambrian of the United States) (trilobite)"
598:
565:
547:
301:
193:
40:
859:
553:
535:
378:
85:
50:
474:
461:
713:"New Lower Cambrian trilobite faunule from the Taconic sequence of New York"
575:
349:
181:
169:
157:
145:
90:
372:
A cladogram showing the relationship between several species of the genera
292:
Rasetti, 1966, is a genus of
Eodiscinid trilobite belonging to the family
853:
491:
353:
321:
297:
296:
Kobayashi T. (1943), Order
Agnostida Salter (1864). It lived during the
80:
75:
60:
55:
45:
873:
517:
faunule from one of the most common and characteristic trilobites. The
427:
Among genera currently assigned to
Weymouthiidae Kobayashi, 1943 (Jell
305:
249:
95:
70:
541:
487:), Canada (Newfoundland) and England (Purley Shales of Warwickshire).
133:
830:
364:
345:
341:
602:, with an axis composed of ten rings. Pleural fields unfurrowed.
834:
624:"A compendium of fossil marine animal genera (Trilobita entry)"
411:(e.g., Rushton, 1966; Rasetti, 1966;) but they are shared with
759:
Crustacean Issues 16, Crustacea and Arthropod Relationships
736:
Memoirs of the Association of Australasian Palaeontologists
695:
Quarterly Journal of the Geological Society of London
843:
596:three segments. The pygidium is much like that in
689:SALTER, J. W. 1864: On some new fossils from the
533:occurs in association with other Weymouthiidae (
320:is named for Dr. John M. Bird who collected the
8:
435:. 1997), Rushton (1966, p. 12) noted that, “
831:
795:
793:
674:Proceedings of the Imperial Academy, Tokyo
617:
615:
106:
20:
961:Paleontology in Newfoundland and Labrador
611:
498:Rushton, 1966, is A 57082, held at the
770:
768:
818:Palaeontographical Society Monographs
805:Treatise on Invertebrate Paleontology
717:Smithsonian Miscellaneous Collections
658:Smithsonian Miscellaneous Collections
7:
356:of cowardice during the Trojan War.
628:Bulletins of American Paleontology
14:
500:Sedgwick Museum of Earth Sciences
824:): p. 16, pl. 1, figs. 20 a, b.
395:and slightly more distantly to
348:around 800 B.C.E.) who accused
340:is named after a Greek in the
1:
391:is most closely related to
16:Extinct genus of trilobites
977:
951:Animals described in 1966
344:(an epic poem written by
255:
248:
240:
233:
123:Scientific classification
121:
114:
105:
23:
761:. Boca Raton: CRC Press.
591:Like all Weymouthiidae,
775:Paleobiology Database.
573:, several species of
369:
908:Paleobiology Database
634:: 560. Archived from
622:SEPKOSKI, J. (2002).
439:Rasetti differs from
368:
711:RASETTI, F. (1966).
519:Acimetopus bilobatus
515:Acimetopus bilohatus
415:. Synapomorphies of
405:Acidiscus-Bolboparia
330:is derived from the
946:Cambrian trilobites
799:WHITTINGTON, H. B.
638:on 5 September 2006
471: /
370:
956:Fossils of Canada
923:
922:
895:Open Tree of Life
837:Taxon identifiers
803:., 1997. Part O,
693:-flags of Wales.
475:42.400°N 73.500°W
285:
284:
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263:
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941:Agnostida genera
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560:Leptochilodiscus
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29:Temporal range:
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583:(Dorypygidae).
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480:42.400; -73.500
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242:Acidiscus birdi
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116:Acidiscus birdi
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510:A. hexacanthus
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401:Synapomorphies
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328:A. hexacanthus
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298:Botomian stage
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936:Weymouthiidae
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755:FORTEY, R. A.
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352:of greed and
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294:Weymouthiidae
291:
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278:Rushton, 1966
276:
273:
270:Rasetti, 1966
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262:Rasetti, 1966
260:
257:
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254:
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247:
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227:
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206:Weymouthiidae
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191:
189:Superfamily:
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780:. Retrieved
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640:. Retrieved
636:the original
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530:
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496:A. theristes
495:
453:
448:Distribution
440:
436:
432:
431:Whittington
428:
426:
422:Stigmadiscus
421:
416:
412:
408:
404:
397:Stigmadiscus
396:
392:
388:
385:Stigmadiscus
383:
377:
373:
371:
338:A. theristes
337:
327:
317:
288:
287:
286:
275:A. theristes
274:
266:
258:
241:
235:Type species
218:
217:
115:
33:
24:
18:
782:19 December
701:, 233–241.
599:Serrodiscus
587:Description
566:Serrodiscus
548:Bathydiscus
478: /
441:Serrodiscus
304:Series and
302:Miaolingian
194:Eodiscoidea
930:Categories
742:: 209–262.
723:(9): 1–52.
642:12 January
606:References
571:Calodiscus
554:Bolboparia
536:Acimetopus
504:Protolenus
417:Bolboparia
413:Bolboparia
393:Bolboparia
379:Bolboparia
177:Suborder:
146:Arthropoda
32:Botomian (
845:Acidiscus
676:, Volume
593:Acidiscus
576:Olenellus
437:Acidiscus
409:Acidiscus
389:Acidiscus
374:Acidiscus
350:Agamemnon
312:Etymology
289:Acidiscus
219:Acidiscus
182:Eodiscina
170:Agnostida
158:Trilobita
129:Kingdom:
34:Olenellus
25:Acidiscus
860:Q4674105
854:Wikidata
663:, 1-52.
531:A. birdi
492:Holotype
454:A. birdi
361:Taxonomy
354:Achilles
322:holotype
318:A. birdi
259:A. birdi
201:Family:
141:Phylum:
134:Animalia
900:5130546
887:1336932
874:4639293
691:Lingula
526:Ecology
466:73°30′W
463:42°24′N
308:stage.
306:Wuliuan
250:species
226:Rasetti
213:Genus:
165:Order:
153:Class:
581:Bonnia
579:, and
542:Analox
228:, 1966
36:-zone)
913:19168
882:IRMNG
801:et al
433:et al
346:Homer
342:Iliad
332:Greek
869:GBIF
784:2012
644:2008
490:The
403:for
382:and
41:PreꞒ
721:148
661:148
632:364
569:),
494:of
932::
910::
897::
884::
871::
856::
792:^
767:^
740:42
738:.
719:.
715:.
699:20
697:,
678:19
630:.
626:.
614:^
563:,
557:,
551:,
545:,
539:,
429:in
399:.
376:,
91:Pg
822:1
820:(
786:.
646:.
324:.
96:N
86:K
81:J
76:T
71:P
66:C
61:D
56:S
51:O
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
