311:, is also classed among varieties of angelwing, growing up to 7 cm (2¾″). It has a thin, elongate shell resembling a small angelwing but lacks the rolled-out hinge area. Its beak is at one end of the shell with strong radial ribbing on the beak end. Teeth are located on hinge and a deep pallial sinus and partially united siphons. It has a white exterior and interior. It typically burrows into hard surfaces such as clay or peat in intertidal zones. It is commonly found on sounds and ocean beaches with a range from
1087:
1111:
1070:
125:
1123:
294:, is classed among the angelwing varieties, growing up to 5.7 cm (2¼″) and is similar to other angelwings but with weaker sculpture. One end is squared off and the other end pointed. Loose accessory plates are located above the hinge on live specimens. It possesses a white exterior and interior. It burrows into mud, clay or softwood. Occasionally it is washed onto sounds and ocean beaches, and has a habitat range from
102:
485:
257:
Piddocks are unique in that each side of their shells is divided into 2 or 3 separate sections. Furthermore, one of the piddock's shells has a set of ridges or "teeth", which they use to grind away at clay or soft rock and create tubular burrows. The shape of these burrows is due to the rotating
1110:
1387:
258:
motion of the piddock as it grinds the rock to make its home. The piddock stays in the burrow it digs for the entirety of its eight-year lifespan, with only its
1426:
1069:
1513:
1086:
1361:
1400:
1239:
1475:
1158:
1041:
974:
945:
667:
543:
397:
273:
Some species of
Pholadidae may reach up to 18 cm (7″). Their coloration is typically white, though through consumption of
1405:
1413:
1122:
1322:
1309:
124:
683:
1431:
1508:
362:
302:. This fragile shell is rarely dug from mud without breaking. It burrows deeply and has long, united siphons.
987:
957:
900:
830:
761:
430:
307:
913:
890:
854:
1249:
633:
610:
587:
738:
711:
701:
1462:
1327:
923:
864:
846:
820:
691:
564:
458:
201:
982:
787:
647:
424:
1097:
1049:
1031:
1008:
998:
840:
810:
800:
291:
1441:
1348:
1296:
1077:
952:
792:
779:
717:
510:
468:
414:
286:
1197:
1503:
1218:
728:
533:
111:
1480:
438:
352:
623:
600:
186:
119:
751:
577:
554:
1467:
774:
678:
1449:
1335:
333:
266:
for food. When the piddock dies and leaves an empty tubular burrow, other marine life such as
1392:
1021:
500:
1454:
1159:
http://www.registrelep.gc.ca/virtual_sara/files/cosewic/sr_Atlantic%20Mud-piddock_0810_e.pdf
1092:
657:
375:
259:
235:
1287:
965:
329:
324:
1139:
905:
882:
490:
448:
388:
1497:
1037:
970:
941:
663:
539:
404:
393:
380:
263:
59:
1340:
1301:
1234:
1116:
burrows, 2.5 cm (1″) or less, in calcic rock, coast
Boulogne - Calais (France)
1314:
1226:
1202:
484:
1418:
1374:
1281:
1102:
523:
295:
267:
34:
1272:
1169:
877:
639:
474:
101:
79:
44:
337:
136:
84:
1266:
274:
166:
156:
74:
69:
54:
49:
39:
316:
242:
239:
89:
64:
1379:
936:
312:
299:
146:
1366:
1243:
483:
277:
176:
1353:
1182:
246:
1247:
1210:
1075:
Valves of the
Atlantic mud-piddock or fallen angelwing,
1170:
Basic information for Pholas dactylus (Common piddock)
1256:
270:, crabs and other molluscs may use the burrow.
8:
1244:
100:
20:
1180:Vincent Pieribone and David F. Gruber.
1151:
1065:
7:
1442:3d670834-5068-4ced-80ab-57614d21f2b9
280:some may develop a pink coloration.
1514:Taxa named by Jean-Baptiste Lamarck
14:
262:exposed to take in water that it
1128:Angelwing and associated burrows
1121:
1109:
1085:
1068:
123:
1184:Harvard University Press, 2005.
488:Two views of a whole shell of
1:
825:Kennedy and Armentrout, 1989
652:A. E. Verrill and Bush, 1890
367:Kuroda & Teramachi, 1930
1213:Seashells of NC Field Guide
345:Genera and selected species
290:, often referred to as the
1530:
284:The Atlantic mud-piddock,
336:in his 1887 discovery of
214:
209:
120:Scientific classification
118:
108:
99:
23:
743:Okamoto & Habe, 1987
733:Okamoto & Habe, 1987
615:(G. B. Sowerby II, 1849)
419:(G. B. Sowerby II, 1849)
332:and was investigated by
109:One valve of a shell of
463:(G. B. Sowerby I, 1834)
363:Aspidopholas yoshimurai
308:Petricola pholadiformis
1095:of the rough piddock,
901:Pholadidea loscombiana
869:Evans and Fisher, 1966
831:Penitella kamakurensis
762:Parapholas californica
494:
1463:Paleobiology Database
914:Pholadidea spathulata
891:Pholadidea acherontea
855:Penitella richardsoni
628:G. B. Sowerby I, 1824
487:
953:Pholas campechiensis
634:Martesia cuneiformis
611:Lignopholas rivicola
588:Jouannetia quillingi
322:The common piddock (
305:The false angelwing
1228:Cyrtopleura costata
1221:Cyrtopleura costata
1204:Cyrtopleura costata
895:Beu and Climo, 1974
739:Nipponopholas satoi
712:Netastoma rostratum
702:Netastoma japonicum
534:Cyrtopleura costata
328:) is known for its
112:Cyrtopleura costata
924:Pholadidea tridens
865:Penitella turnerae
821:Penitella hopkinsi
692:Netastoma darwinii
605:R. D. Turner, 1955
565:Diplothyra smithii
495:
459:Barnea subtruncata
16:Family of bivalves
1491:
1490:
1450:Open Tree of Life
1250:Taxon identifiers
1055:
1045:
1027:
1014:
1004:
991:
983:Pholas orientalis
977:
961:
948:
929:
919:
909:
896:
886:
870:
860:
850:
836:
826:
816:
806:
796:
788:Penitella conradi
783:
767:
757:
744:
734:
721:
707:
697:
687:
671:
653:
648:Martesia fragilis
643:
629:
616:
606:
593:
583:
570:
560:
547:
529:
516:
506:
478:
464:
454:
444:
434:
425:Barnea manilensis
420:
410:
400:
384:
368:
358:
221:
220:
205:
1521:
1509:Bivalve families
1484:
1483:
1471:
1470:
1458:
1457:
1445:
1444:
1435:
1434:
1422:
1421:
1419:NHMSYS0021054653
1409:
1408:
1396:
1395:
1383:
1382:
1370:
1369:
1357:
1356:
1344:
1343:
1331:
1330:
1318:
1317:
1305:
1304:
1292:
1291:
1290:
1277:
1276:
1275:
1245:
1185:
1178:
1172:
1167:
1161:
1156:
1125:
1113:
1098:Zirfaea pilsbryi
1089:
1072:
1053:
1050:Zirfaea pilsbryi
1035:
1032:Zirfaea crispata
1025:
1013:(Spengler, 1792)
1012:
1009:Talona explanata
1002:
986:
978:– common piddock
969:
956:
940:
927:
917:
904:
894:
881:
868:
858:
844:
841:Penitella penita
835:(Yokoyama, 1922)
834:
824:
814:
811:Penitella gabbii
804:
801:Penitella fitchi
791:
778:
765:
755:
742:
732:
715:
706:(Yokoyama, 1920)
705:
695:
682:
661:
658:Martesia striata
651:
637:
627:
614:
604:
591:
582:Desmoulins, 1828
581:
568:
558:
537:
527:
514:
504:
472:
462:
452:
442:
428:
418:
409:(Deshayes, 1874)
408:
392:
379:
366:
357:P. Fischer, 1887
356:
292:fallen angelwing
200:
128:
127:
104:
94:
31:
27:Temporal range:
21:
1529:
1528:
1524:
1523:
1522:
1520:
1519:
1518:
1494:
1493:
1492:
1487:
1479:
1474:
1466:
1461:
1453:
1448:
1440:
1438:
1430:
1425:
1417:
1412:
1404:
1399:
1391:
1386:
1378:
1373:
1365:
1360:
1352:
1347:
1339:
1334:
1326:
1321:
1313:
1308:
1300:
1295:
1286:
1285:
1280:
1271:
1270:
1265:
1252:
1206:Angelwing clams
1194:
1189:
1188:
1179:
1175:
1168:
1164:
1157:
1153:
1148:
1136:
1129:
1126:
1117:
1114:
1105:
1090:
1081:
1078:Barnea truncata
1073:
1064:
966:Pholas dactylus
918:(Sowerby, 1850)
696:(Sowerby, 1849)
511:Chaceia ovoidea
469:Barnea truncata
415:Barnea fragilis
347:
330:bioluminescence
325:Pholas dactylus
287:Barnea truncata
255:
199:
122:
95:
93:
92:
87:
82:
77:
72:
67:
62:
57:
52:
47:
42:
37:
30:Jurassic–Recent
29:
28:
25:
17:
12:
11:
5:
1527:
1525:
1517:
1516:
1511:
1506:
1496:
1495:
1489:
1488:
1486:
1485:
1472:
1459:
1446:
1436:
1423:
1410:
1397:
1384:
1371:
1358:
1345:
1332:
1319:
1306:
1293:
1278:
1262:
1260:
1254:
1253:
1248:
1242:
1241:
1237:
1232:
1224:
1216:
1208:
1200:
1193:
1192:External links
1190:
1187:
1186:
1173:
1162:
1150:
1149:
1147:
1144:
1143:
1142:
1140:Pholad borings
1135:
1132:
1131:
1130:
1127:
1120:
1118:
1115:
1108:
1106:
1091:
1084:
1082:
1074:
1067:
1063:
1060:
1059:
1058:
1057:
1056:
1046:
1017:
1016:
1015:
994:
993:
992:
979:
962:
932:
931:
930:
920:
910:
897:
873:
872:
871:
861:
851:
837:
827:
817:
807:
797:
770:
769:
768:
766:(Conrad, 1837)
747:
746:
745:
724:
723:
722:
708:
698:
674:
673:
672:
654:
644:
619:
618:
617:
596:
595:
594:
573:
572:
571:
550:
549:
548:
519:
518:
517:
491:Barnea candida
482:
481:
480:
479:
465:
455:
449:Barnea similis
445:
435:
421:
411:
401:
389:Barnea candida
371:
370:
369:
346:
343:
342:
341:
334:Raphaël Dubois
320:
303:
254:
251:
219:
218:
212:
211:
207:
206:
194:
190:
189:
184:
180:
179:
174:
170:
169:
164:
160:
159:
154:
150:
149:
144:
140:
139:
134:
130:
129:
116:
115:
106:
105:
97:
96:
88:
83:
78:
73:
68:
63:
58:
53:
48:
43:
38:
33:
32:
26:
15:
13:
10:
9:
6:
4:
3:
2:
1526:
1515:
1512:
1510:
1507:
1505:
1502:
1501:
1499:
1482:
1477:
1473:
1469:
1464:
1460:
1456:
1451:
1447:
1443:
1437:
1433:
1428:
1424:
1420:
1415:
1411:
1407:
1402:
1398:
1394:
1389:
1385:
1381:
1376:
1372:
1368:
1363:
1359:
1355:
1350:
1346:
1342:
1337:
1333:
1329:
1324:
1320:
1316:
1311:
1307:
1303:
1298:
1294:
1289:
1283:
1279:
1274:
1268:
1264:
1263:
1261:
1259:
1255:
1251:
1246:
1240:
1238:
1236:
1233:
1231:
1229:
1225:
1223:
1222:
1217:
1215:
1214:
1211:NC Sea Grant
1209:
1207:
1205:
1201:
1199:
1196:
1195:
1191:
1183:
1177:
1174:
1171:
1166:
1163:
1160:
1155:
1152:
1145:
1141:
1138:
1137:
1133:
1124:
1119:
1112:
1107:
1104:
1100:
1099:
1094:
1088:
1083:
1080:
1079:
1071:
1066:
1061:
1052:
1051:
1047:
1043:
1039:
1034:
1033:
1029:
1028:
1024:
1023:
1018:
1011:
1010:
1006:
1005:
1001:
1000:
995:
989:
985:
984:
980:
976:
972:
968:
967:
963:
959:
955:
954:
950:
949:
947:
943:
939:
938:
933:
926:
925:
921:
916:
915:
911:
907:
903:
902:
898:
893:
892:
888:
887:
884:
880:
879:
874:
867:
866:
862:
859:Kennedy, 1989
857:
856:
852:
848:
843:
842:
838:
833:
832:
828:
823:
822:
818:
815:(Tryon, 1863)
813:
812:
808:
803:
802:
798:
794:
790:
789:
785:
784:
781:
777:
776:
771:
764:
763:
759:
758:
754:
753:
748:
741:
740:
736:
735:
731:
730:
729:Nipponopholas
725:
719:
714:
713:
709:
704:
703:
699:
694:
693:
689:
688:
685:
681:
680:
675:
669:
665:
660:
659:
655:
650:
649:
645:
641:
636:
635:
631:
630:
626:
625:
620:
613:
612:
608:
607:
603:
602:
597:
590:
589:
585:
584:
580:
579:
574:
567:
566:
562:
561:
557:
556:
551:
545:
541:
536:
535:
531:
530:
526:
525:
520:
515:(Gould, 1851)
513:
512:
508:
507:
503:
502:
497:
496:
493:
492:
486:
476:
471:
470:
466:
461:
460:
456:
451:
450:
446:
443:Pennant, 1777
441:
440:
436:
432:
427:
426:
422:
417:
416:
412:
407:
406:
405:Barnea davidi
402:
399:
395:
391:
390:
386:
385:
382:
378:
377:
372:
365:
364:
360:
359:
355:
354:
349:
348:
344:
339:
335:
331:
327:
326:
321:
318:
314:
310:
309:
304:
301:
297:
293:
289:
288:
283:
282:
281:
279:
276:
271:
269:
265:
261:
252:
250:
248:
245:similar to a
244:
241:
237:
233:
229:
225:
217:
213:
208:
203:
198:
195:
192:
191:
188:
185:
183:Superfamily:
182:
181:
178:
175:
172:
171:
168:
165:
162:
161:
158:
155:
152:
151:
148:
145:
142:
141:
138:
135:
132:
131:
126:
121:
117:
114:
113:
107:
103:
98:
91:
86:
81:
76:
71:
66:
61:
56:
51:
46:
41:
36:
22:
19:
1257:
1227:
1220:
1212:
1203:
1181:
1176:
1165:
1154:
1096:
1076:
1048:
1030:
1020:
1007:
997:
981:
964:
951:
935:
928:(Gray, 1843)
922:
912:
899:
889:
876:
863:
853:
839:
829:
819:
809:
805:Turner, 1955
799:
793:Valenciennes
786:
780:Valenciennes
773:
760:
756:Conrad, 1848
750:
737:
727:
718:Valenciennes
710:
700:
690:
677:
656:
646:
632:
622:
609:
599:
592:Turner, 1955
586:
576:
563:
553:
532:
522:
509:
505:Turner, 1855
499:
489:
467:
457:
453:(Gray, 1835)
447:
439:Barnea parva
437:
423:
413:
403:
387:
374:
361:
353:Aspidopholas
351:
323:
306:
285:
272:
256:
231:
227:
223:
222:
215:
196:
110:
18:
1375:iNaturalist
1282:Wikispecies
1219:Angelwing,
1103:Puget Sound
601:Lignopholas
569:Tryon, 1862
559:Tryon, 1862
528:Tryon, 1862
524:Cyrtopleura
296:Nova Scotia
268:sea anemone
226:, known as
187:Pholadoidea
1504:Pholadidae
1498:Categories
1315:Pholadidae
1302:Pholadidae
1288:Pholadidae
1258:Pholadidae
1146:References
1054:Lowe, 1931
1026:Gray, 1842
1003:Gray, 1842
878:Pholadidea
752:Parapholas
578:Jouannetia
555:Diplothyra
253:Background
232:angelwings
224:Pholadidae
197:Pholadidae
24:Pholadidae
1198:Angelwing
775:Penitella
684:Carpenter
679:Netastoma
338:luciferin
216:See text
143:Kingdom:
137:Eukaryota
1354:46470664
1273:Q3015714
1267:Wikidata
1230:taxonomy
1134:See also
1038:Linnaeus
971:Linnaeus
942:Linnaeus
664:Linnaeus
624:Martesia
540:Linnaeus
431:Philippi
394:Linnaeus
275:red tide
243:molluscs
234:, are a
228:piddocks
193:Family:
167:Bivalvia
157:Mollusca
153:Phylum:
147:Animalia
133:Domain:
1093:Siphons
1062:Gallery
1022:Zirfaea
849:, 1837)
720:, 1846)
642:, 1822)
501:Chaceia
477:, 1822)
433:, 1847)
317:Uruguay
264:filters
240:bivalve
210:Genera
202:Lamarck
173:Order:
163:Class:
1455:204583
1439:NZOR:
1393:115668
1380:117462
1019:Genus
999:Talona
996:Genus
990:, 1791
988:Gmelin
960:, 1791
958:Gmelin
937:Pholas
934:Genus
908:, 1819
906:Turton
885:, 1819
883:Turton
875:Genus
847:Conrad
795:, 1846
782:, 1846
772:Genus
749:Genus
726:Genus
686:, 1864
676:Genus
621:Genus
598:Genus
575:Genus
552:Genus
521:Genus
498:Genus
383:, 1826
376:Barnea
373:Genus
350:Genus
313:Canada
300:Brazil
260:siphon
236:family
204:, 1809
1476:WoRMS
1468:61721
1432:52914
1406:81784
1388:IRMNG
1341:7NKFK
1328:55565
381:Risso
278:algae
177:Myida
1427:NCBI
1401:ITIS
1367:3477
1362:GBIF
1323:BOLD
1235:ITIS
1042:1758
975:1758
946:1758
668:1758
544:1758
398:1758
247:clam
35:PreꞒ
1481:252
1414:NBN
1349:EoL
1336:CoL
1310:AFD
1297:ADW
1101:in
640:Say
475:Say
315:to
298:to
238:of
230:or
1500::
1478::
1465::
1452::
1429::
1416::
1403::
1390::
1377::
1364::
1351::
1338::
1325::
1312::
1299::
1284::
1269::
1040:,
973:,
944:,
666:,
542:,
396:,
249:.
85:Pg
1044:)
1036:(
845:(
716:(
670:)
662:(
638:(
546:)
538:(
473:(
429:(
340:.
319:.
90:N
80:K
75:J
70:T
65:P
60:C
55:D
50:S
45:O
40:Ꞓ
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