A monograph of the British fossil corals - kreidefossilien.de

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XXX BRITISH FOSSIL CORALS. 26. Genus Astroccenia. Milne Edw. aud J. Haime, loc. cit., p. 296, 1848. Corallum very dense, and not bearing columnar processes, as in the preceding genus. Cfl^z'ce* polygonal. Co/M/«e//« styliform, not projecting much. No/ja/?'. /SVjote thick; apparently eight or ten systems, two or four of the secondary septa being as much developed as the six primary ones. Walls thick and united, as in Stylocoeuia. Tjrp. sp., Astroccenia Orbignyana, Milne Edw. and J. Haime, loc. cit., p. 297 ; Astrea formosissima, Michelin, Icon., pi. Ixxii, fig. 9. 27. Genus Stephanoccenia. Milne Edw. and J. Haime, loc. cit., p. 300, 1848. Corallum glomerulate ; the corallites united by their walls, which are thick and compact; gemmation lateral and marginal. C«//ces subpolygonal. Cb/«?«e//a styliform, and not projecting much. A coronet of ]jali, corresponding to the septa of the older cycla. Septa scarcely exsert, granulated on their sides, and forming six systems, which are in general equally developed. Typ. sp., Stephanoccenia intersepta, Milne Edw. and J. Haime, loc. cit., tab. vii, fig. 1 ; Astrea intersepta, Lamarck, Anim. sans Vert., t. ii, p. 2C6. 28. Genus Phylloccenia. Milne Edw. and J. Haime, loc. cit., p. 469, 1848. Coralhun glomerate, astreiform. Corallites united by the costse and the exotheca, which are highly developed. Calices with a free margin, slightly elevated. No columella, or only traces of a rucUmentary one. No jya//. Sejita very broad, exsert, and forming six systems ; gemmation lateral. Typ. sp., Phylloccenia irradians, Milne Edw. and J. Haime, loc. cit. ; Astrea radiata, Michelin, pi. xii, fig. 4. 29. Genus Dichoccenia. Milne Edw. aud J. Haime, loc. cit., p. 305, 1848. Corallum glomerate, astreiform. Corallites united by a veiy abundant and dense costal crenenchyraa, the upper surface of which is subgranulate. Calices circular or elliptical, with a projecting margin. Cohmdla small. Pali corresponding to most of the septa, which are exsert and granulated. Multiplication fissiparous. Typ. sp., Bichocoenia porcata, Milne Edw. and J. Haime, loc. cit. ; Astrea porcata, Lamarck, Anim. sans Vert., t. ii, p. 260.
; INTRODUCTION. xxxi 30. Genus Heteroccenia. Milne Edw. and J. Haime, loc. cit., p. 308, 1848. Coralliun resembling that of Sarcinula, but differing fi'oiu all the preceding genera by the small number and the unequal development of the sppta, which form in appearance only three systems. In general, one of the three large primary septa is more developed than the others, and remains sometimes alone in fossil species. Calices circular, with a projecting free margin. No col/t/iiella nor pali. Sepia exsert ; coenenchyma abundant, of a foliate structure, and having a granular surface. Typ. sp., Ileterocoenia exiguis, Milne Edw. and J. Haime, loc. cit., tab. ix, fig. 13 ; Lithodendron exigue, Michelin, Icon., Zooph. tab. Lxxii, fig. 7. Section IV.—EUSMILIN^ IMMERStE. CoraUum composite. Corallites disposed as in the preceding Section, but imbedded in an epithecal cellular tissue, and not united by costal laminae or miu-al annular expansions gemmation lateral and basal ; reproduction never fissiparous. 31. Genus Sarcinula. {In parte) Lamarck, Hist, des Anim. sans Vert., t. ii, p. 222, 1816; Anthophyllum,^h.T:e^nh., op. cit., p. 89, 1834. Corallum fasciculate, and almost massive. Corallites tall, free towards their upper end, which projects more or less above the smface of the cellular exotheca. Walls strong, with costae but little developed. No colmneUa, or only a rudimentary one. Septa very exsert. Bissepiments in general simple, and not abundant. Typ. sp., Sarcinula organum, Lamarck, loc. cit., p. 223 ; Milne Edw., Atlas du Regne Animal de Cuvier, Zoopb., pi. lxx.\v, fig. 1. Second Tribe—ASTREIN^. Septa having their upper edge lobulated, dentate, or armed with spines, and often imperfect near their inner edge. Cost(P also spinulous, dentate or crenulate, but never forming simple cristse, as is often the case in Eusmilinse. Columella in general spongy, rarely lamellar, and never styhform. Corallum in genei'al massive. Section I.—ASTREIN^ HIRT^. pro- Corallum simple or composite, and then formed by pei'fectly deUneated corallites^ duced by fissiparity, or by calicular gemmation.
Page 5: THE PALiEONTOGRAPHICAL SOCIETY. INS
Page 8 and 9: i. E. ADLJIED, PBINTr.B, BARTHOLOME
Page 10: e 7b-^,pi'? PRINTED BY C. AND .1. A
Page 13 and 14: INTRODUCTION. iii centre of the ram
Page 15 and 16: INTRODUCTION. v certain parts of th
Page 17 and 18: INTRODUCTION. vii in which the mult
Page 19 and 20: INTRODUCTION. ix Sub-class 1. CORAL
Page 21 and 22: ; INTRODUCTION. xi Sub-order 1. ZOA
Page 23 and 24: INTRODUCTION. xiii 3. Genus Acantho
Page 25 and 26: ; INTRODUCTION. xv formed by proces
Page 27 and 28: ; INTRODUCTION. xvii IS. Genus Plat
Page 29 and 30: INTRODUCTION. xix Aberrant Group. P
Page 31 and 32: INTRODUCTION. xxi 8. Genus Amphelia
Page 33 and 34: INTRODUCTION. xxiii 3. Genus Dkndra
Page 35 and 36: INTRODUCTION. xxv 5. Genus Ccelosmi
Page 37 and 38: INTRODUCTION. xxvii in the two prec
Page 39: ; INTRODUCTION. xxix 23. Genus Pler
Page 43 and 44: INTRODUCTION. xxxiii 30. Genm Symph
Page 45 and 46: ;; INTRODUCTION. xxxv 44. Gentts Tr
Page 47 and 48: LNTRODUCTION. xxxvii 50. Genus Dipl
Page 49 and 50: INTRODUCTION. xxxix Section IV.—
Page 51 and 52: ; INTRODUCTION. xli 64. Genus Astro
Page 53 and 54: INTRODUCTION. xliii which thus form
Page 55 and 56: ; INTRODUCTION. xlv 79. Genus Oclan
Page 57 and 58: INTRODUCTION. xlvii 4. Genus Micbab
Page 59 and 60: INTRODUCTION. xlix 14. Genus Ctclos
Page 61 and 62: INTRODUCTION. li the sclerenchyma,
Page 63 and 64: INTRODUCTION. liii 7. Genus Stephan
Page 65 and 66: INTRODUCTION. Iv Family VII. PORITI
Page 67 and 68: . INTRODUCTION. Ivii Second Tribe
Page 69 and 70: INTRODUCTION. lix 4. Genus Fistulip
Page 71 and 72: INTRODUCTION. hi but much shorter,
Page 73 and 74: INTRODUCTION. Ixiii Family X. SERIA
Page 75 and 76: ; INTRODUCTION. Ixv Family XIII. CY
Page 77 and 78: INTRODUCTION. kvii 7. Gejius Hallia
Page 79 and 80: INTRODUCTION. hix 17. Genus Gonioph
Page 81 and 82: INTRODUCTION. Ixxi or costal radii
Page 83 and 84: INTRODUCTION. • Ixxiii The genera
Page 85 and 86: INTRODUCTION. Ixxv Family I. ALCYON
Page 87 and 88: INTRODUCTION. Ixxvii Second Tribe
Page 89 and 90: INTRODUCTION. Ixxix 1 7. Ge?ius Dis
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INTRODUCTION. Ixxxi 8. Genus Soland
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INTRODUCTION. Ixxxiii 3. Ge7lUS ViR
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INTRODUCTION. Ixxxv Order 3. PODACT
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CORALS OF THE UPPER CHALK. 46 towar
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CORALS OF THE UPPER CHALK. 47 Famil
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: CORALS FROIM THE UPPER CHALK. 49
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CORALS FROM THE UPPER CHALK. 51 Tho
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CORALS FROM THE LOWER CHALK. 53 CHA
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CORALS FROM THE LOWER CHALK. 55 the
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CORALS FROM THE UPPER GREENSAND. 57
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; CORALS FROM THE UPPER GREENSAND.
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CORALS FROM THE GAULT. CHAPTER VI.
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; CORALS FROM THE GAULT. 03 3. Genu
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CORALS FROM THE GAULT. 65 found nea
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CX)RALS FROM THE GAULT. G7 and have
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' Petref. : ; CORALS FROM THE GAULT
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; CORALS FROM THE LOWER GREENSAND.
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TAB. IX. CORALS FROM THE UPPER CHAL
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TAB. XI. CORALS FROM THE GAULT. Cya
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302 TABLE OF BRITISH FOSSIL CORALS.
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304 TABLE OF BRITISH FOSSIL CORALS.
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A. GENERAL INDEX;
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308 GENERAL INDEX.
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310 GENERAL INDEX.
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312 GENERAL INDEX. Dendrophyllia de
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314 GENERAL INDEX. . Halysites cate
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310 GENERAL INDEX.
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318 GENERAL INDEX.
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320 GENERAL INDEX.
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322 GENERAL INDEX. Xenia Zaphrentis
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