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162 results for “Isopora”
Figure 41 in Fossils reveal a high diversity of the staghorn coral genera Acropora and Isopora (Scleractinia: Acroporidae) in the Neogene of Indonesia
Figure 41. Isopora matahari sp. nov. A, C, D, Holotype, NHMUK PI AZ 7101, TF56, Badak, East Kalimantan, Early to Middle Miocene (14.8–17.9 Ma). B, paratype, NHMUK PI AZ 9118, TF56, Badak, East Kalimantan, Early to Middle Miocene (14.8–17.9 Ma), sturdy cylindrical branches recovered in the same sample with the holotype. A, whole specimen. C, transverse section of primary branch showing axial corallite. D, detail of incipient branchlet. E and F, detail of small conical and subimmersed radial corallites.
Figure 39 in Fossils reveal a high diversity of the staghorn coral genera Acropora and Isopora (Scleractinia: Acroporidae) in the Neogene of Indonesia
Figure 39. Acropora renemai sp. nov. Holotype, A, D, H, NHMUK PI AZ 7439, TF502, Bontang, East Kalimantan, Late Miocene (9.4–9.8 Ma). A, whole specimen. B, C, E–G, paratype, NHMUK PI AZ 9117, TF502, Bontang, East Kalimantan, Late Miocene (9.4–9.8 Ma): B, AZ 9117a–d anticlockwise, four specimens showing different parts of a colony. C, AZ 9117b, transverse section of a branch showing axial corallite and cylindrical branches. D, AZ 7439, holotype, electron micrograph of the branch tip showing immersed radial corallites. E, AZ 9117e, branch tip showing appressed tubular radial corallites. F, AZ 9117a, detail of appressed tubular radial corallite. G, AZ 9117c, detail of incipient branch and immersed radial corallites. H, AZ 7439, holotype, electron micrograph of dense reticulate coenosteum formed of elaborated spinules.
Figure 38 in Fossils reveal a high diversity of the staghorn coral genera Acropora and Isopora (Scleractinia: Acroporidae) in the Neogene of Indonesia
Figure 38. Acropora hasibuani sp. nov. Holotype, NHMUK PI AZ 7107, TF517, Sangatta, East Kalimantan, Late Miocene (8.9–9.3 Ma). A, whole colony in the field showing arborescent to open caespitose growth form. B, reconstructed part of the holotype colony showing long branches with basal ramification. C, AZ 7107a, b, detail of two fragments of the holotype showing relatively aligned radial corallites. D and E, AZ 7107c, d, electron micrographs long axial corallites and radial corallites. F and G, AZ 7107c, electron micrographs of tubular and tubular appressed radial corallites. H, AZ 7107c, electron micrograph of dense reticulate coenosteum formed of elaborated spinules.
Figure 40. Isopora brueggemanni. A, C, G–I in Fossils reveal a high diversity of the staghorn coral genera Acropora and Isopora (Scleractinia: Acroporidae) in the Neogene of Indonesia
Figure 40. Isopora brueggemanni. A, C, G–I. NHMUK PI AZ 6906. TF516, Sangatta, East Kalimantan, Late Miocene (8.9–9.3 Ma). B, D, F, NHMUK PI AZ 8802, TF516, Sangatta, East Kalimantan, Late Miocene (8.9–9.3 Ma). A, AZ 6906, whole specimen showing branch tip. B, AZ 8802a, b, two specimens showing corallite arrangement and rounded tubular radials. C, AZ 6906, transverse section of a cylindrical branch. D, AZ 8802a, electron micrograph of a branch tip. E, AZ 6906, electron micrograph of a radial corallite showing septa arrangement and more than three synapticular rings. F, AZ 8802a, electron micrograph of axial corallite. G–I AZ 6906: G, electron micrograph of radial corallites; H, electron micrograph of coenosteum showing meandroid spinules; I, detail of meandroid elaborated spinules.
Figure 29 in Fossils reveal a high diversity of the staghorn coral genera Acropora and Isopora (Scleractinia: Acroporidae) in the Neogene of Indonesia
Figure 29. Acropora kirstyae. NHMUK PI AZ 8845, TF56, Badak, East Kalimantan, Early to Middle Miocene (14.8– 17.9 Ma). A, colony fragments showing evidence of arborescent form. B and C, AZ 8845a: B, electron micrograph composition of a branch tip showing axial corallite and appressed tubular radial corallites; C, electron micrograph of an appressed tubular corallite. D and E, AZ 8845b: D, transverse section of a branch showing axial corallite; E, electron micrograph showing variation of radial corallites. F, AZ 8845a, electron micrograph of reticulate elaborated spinules on coenosteum.
Figure 33. Acropora elegans. A in Fossils reveal a high diversity of the staghorn coral genera Acropora and Isopora (Scleractinia: Acroporidae) in the Neogene of Indonesia
Figure 33. Acropora elegans. A, NHMUK PI AZ 9077, TF153, Bontang, East Kalimantan, Early to Middle Miocene (15.3– 17.9 Ma). Aspect of a colony in the field showing horizontally extended branches. B–D, NHMUK PI AZ 7099, TF153, Bontang, East Kalimantan, Early to Middle Miocene (15.3–17.9 Ma): B and C, AZ 7099a-b, specimens interpreted as the main axes and primary branches of a colony. D, AZ 7099b, flattened irregular branch in transverse section. E, AZ 6503, whole specimen. F and G, NHMUK PI AZ 7097, TF153, Bontang, East Kalimantan, Early to Middle Miocene (15.3– 17.9 Ma): F, whole specimen; G, electron micrograph of tubular appressed radial corallites. H–J, NHMUK PI AZ 6503, TF153, Bontang, East Kalimantan, Early to Middle Miocene (15.3–17.9 Ma): H, electron micrograph of tubular appressed radial corallites; I, incipient branch, triangle indicates radial corallite; J, detail of coenosteum with elaborate spinules.
Figure 37 in Fossils reveal a high diversity of the staghorn coral genera Acropora and Isopora (Scleractinia: Acroporidae) in the Neogene of Indonesia
Figure 37. Acropora russelli. NHMUK PI AZ 8834, TF500, Bontang, East Kalimantan, Late Miocene (9.4–9.8 Ma). A, arborescent colony embedded into a fine sediment matrix. B, detail of a branch showing radial corallite arrangement. C and D, detail of axial corallites showing costate coenosteum. E, detail of tubular radial corallite.
Figure 26. Acropora vaughani. A–C, RGM 3998 in Fossils reveal a high diversity of the staghorn coral genera Acropora and Isopora (Scleractinia: Acroporidae) in the Neogene of Indonesia
Figure 26. Acropora vaughani. A–C, RGM 3998, Sonde, Java, Pleistocene (0.8–2.6 Ma). A, whole specimen. B, detail of branch showing irregular distribution of radial corallites. C, detail of radial corallites showing thickened walls. D and E, RGM 167823, Fatu Lulih, Timor, Pliocene to Early Pleistocene (1.8–5.3): D, three fragments showing mid branch and branch tip (up right); E, detail of radial corallites with round calices and thickened walls. F, RGM 125829, Nalawo Valley, Nias, Sumatra, Pleistocene (0.8–2.6 Ma), whole specimen.
Figure 22 in Fossils reveal a high diversity of the staghorn coral genera Acropora and Isopora (Scleractinia: Acroporidae) in the Neogene of Indonesia
Figure 22. Acropora florida. NHMUK PI AZ 6905, TF516, Sangatta, East Kalimantan, Late Miocene (8.9–9.3 Ma). A, colony in the field preserved into a fine-sand and silt matrix. B, AZ 6905a–c, three fragments of a colony showing middle part of a primary branch (left) and branch tips with branchlets (centre and right). C, AZ 6905a, transverse section of a branch showing axial corallite. D, AZ 6905d, one fragment from the basal part of the colony showing asymmetric distribution of branchlets mainly on the upper side (left) and almost devoid from underneath (right). E–H, AZ 6905b: E, electron micrograph of a branchlet showing radial corallites around axial; F, detail of a tubular radial corallite; G, detail of costae on radial corallite wall; H, electron micrograph of reticulate coenosteum formed of simple flattened spinules in between radial corallites.
Figure 13. Acropora abrotanoides. RGM 893236893236 in Fossils reveal a high diversity of the staghorn coral genera Acropora and Isopora (Scleractinia: Acroporidae) in the Neogene of Indonesia
Figure 13. Acropora abrotanoides. RGM 893236893236, Kalang Anjar, Java, Miocene (5.3–23 Ma). Whole specimen is a branch tip showing the typical dimorphic radial corallites.
Figure 10. Acropora valida, RGM 791826 in Fossils reveal a high diversity of the staghorn coral genera Acropora and Isopora (Scleractinia: Acroporidae) in the Neogene of Indonesia
Figure 10. Acropora valida, RGM 791826, Mola Valley, Sumatra, Pleistocene (0.8–2.6 Ma). A, three specimens, showing two branch tips (left and middle) and middle part of a branch (right). B–D, RGM 791826a: upper view of axial and radial corallites. C, detail of a tapering branch tip. D, detail of tubular rounded corallites and subimmersed corallites with reticulate coenosteum throughout. E, detail of axial corallite and branch tip showing asymmetric arrangement of radial corallites.
Figure 16. Acropora duncani. Lectotype, NHMW 1959 in Fossils reveal a high diversity of the staghorn coral genera Acropora and Isopora (Scleractinia: Acroporidae) in the Neogene of Indonesia
Figure 16. Acropora duncani. Lectotype, NHMW 1959/334/12, Gunung Selah, Ci Lanangthale, Java, Late Miocene (8.5– 11.6 Ma). A, branch fragment and detail figured in Reuss (1866, pl. 2, fig. 2a, b). B, transverse section of the branch showing axial corallite. C, lateral view of lectotype specimen showing small radial corallites and incipient secondary branches.
Figure 19 in Fossils reveal a high diversity of the staghorn coral genera Acropora and Isopora (Scleractinia: Acroporidae) in the Neogene of Indonesia
Figure 19. Acropora papillare. NHMUK PI AZ 6977, TF275, Kari Orang, Bengalon, East Kalimantan, Early Miocene (18–20 Ma). A, aspect of a colony in situ as seen from below, showing corymbose to caepito-corymbose growth form. B, detail of a transverse section of a branch in the field, branch diameter approx. 15 mm. C, AZ 6977a–c, three cylindrical branches showing wide-open branching pattern and incipient branches. D, AZ 6977d, electron micrograph of a branch tip. E, AZ 6977d, top view of axial corallite. F, AZ 6977e, transverse section of branch showing eight radial corallites arranged around the axial. G and H, AZ 6977b: G, electron micrograph of radial corallites near the tip – short tubular and subimmersed radials; H, detail of tubular radial corallite with thickened lower wall. I, AZ 6977d, electron micrograph of reticulate coenosteum formed of a mix of simple and laterally flattened elaborated spinules.
Figure 32 in Fossils reveal a high diversity of the staghorn coral genera Acropora and Isopora (Scleractinia: Acroporidae) in the Neogene of Indonesia
Figure 32. Acropora filiformis NHMUK PI AZ 7441, TF500, Bontang, East Kalimantan, Late Miocene (9.4–9.8 Ma). A, long branches of a colony in the field preserved in a clay-rich sediment matrix. B, detail of upright slender branch. C, AZ 7441a–d, four fragments of the colony, showing sparse distribution of radial corallites. D, AZ 7441a, transverse section of branch showing axial corallite. E–G, AZ 7441a, electron micrograph of appressed tubular corallites. H, AZ 7441a, electron micrograph of coenosteum between corallites formed of reticulated elaborated spinules.
Figure 8 in Fossils reveal a high diversity of the staghorn coral genera Acropora and Isopora (Scleractinia: Acroporidae) in the Neogene of Indonesia
Figure 8. Acropora samoensis, NHMUK PI AZ 7103, TF505, Bontang gardens sections, East Kalimantan, Late Miocene (9.4–9.8 Ma). A, aspect of a colony in the field found within grey silt-rich sediments, showing a probably caespitocorymbose growth form. B, AZ 7103a, upper view of a branch fragment. C, three branches showing short tubular radial corallites, anticlockwise: AZ 7103a,b,c. D, AZ 7103b (up) and AZ 7103c (down), boring holes interpreted as being made by Lithophaga sp. E, AZ 7103b, electron micrograph showing the upper view of an axial corallite.
Figure 4 in Fossils reveal a high diversity of the staghorn coral genera Acropora and Isopora (Scleractinia: Acroporidae) in the Neogene of Indonesia
Figure 4. Examples of spinules and types of corallite wall and coenosteum recognized among the fossils of Indonesia: A, flattened spinules, reticulate coenosteum; B, simple to flattened spinules, reticulate coenosteum; C, simple spinules, reticulate coenosteum; D and E, simple flattened spinules, costate corallite wall; F, costate corallite wall, simple spinules of irregular costate coenosteum; G and H, elaborate spinules; I, meandroid elaborate spinules.
Figure 6 in Fossils reveal a high diversity of the staghorn coral genera Acropora and Isopora (Scleractinia: Acroporidae) in the Neogene of Indonesia
Figure 6. Stratigraphic range of Acropora and Isopora species. *Species from this study; remaining ranges were gathered from the literature review. Extension of the stratigraphic range based on the fossil material of this study is indicated as (←) for the earliest occurrence or (→) for latest occurrence. (?) Uncertain identification of Acropora lavandulina from Felix (1921). (M) Occurrence of fossil in the Miocene, 5.3–23 Ma, as no information on stratigraphic detail was available for some localities.
Figure 5 in Fossils reveal a high diversity of the staghorn coral genera Acropora and Isopora (Scleractinia: Acroporidae) in the Neogene of Indonesia
Figure 5. Diagram of morphometric characters used to describe Acropora and Isopora fossil specimens. A, schematics of arborescent (up) and corymbose (down) colonies showing distance between branches (character 1) and branch angle (character 6). B, single branch. C, calice from top view. D, branch tip from lateral view illustrating corallite and coenosteal measurements. E, upper view of the same branch tip illustrating an example of corallite arrangement sequence with one axial corallite and the first two series of radial corallites (r1, r2): 1–2–6. Numbers correspond to characters 1–17 listed in Table 2. Modified from Wolstenholme et al. (2003).
Figure 28. Acropora halmaherae, RGM125830 in Fossils reveal a high diversity of the staghorn coral genera Acropora and Isopora (Scleractinia: Acroporidae) in the Neogene of Indonesia
Figure 28. Acropora halmaherae, RGM125830, Gawo Valley, Nias, Sumatra, Pleistocene (0.8–2.6 Ma). A and B, RGM 125830a: A, whole specimen showing degraded tubular radial corallites; B, upper view showing the axial corallite. C and D, RGM125830b: C, whole specimen showing broken branches, probably hispidose; D, detail showing the axial corallite. E and F, RGM125830c: E, whole specimen showing tubular exsert and nariform radial corallites; F, detail of radial corallite and reticulate coenosteum.
Figure 12. Acropora grandis. RGM 41756 in Fossils reveal a high diversity of the staghorn coral genera Acropora and Isopora (Scleractinia: Acroporidae) in the Neogene of Indonesia
Figure 12. Acropora grandis. RGM 41756, Tarakan Island, East Kalimantan, Pliocene (2.6–5.3 Ma). A, the two branches, showing barnacle incrustations at the base of the larger one (RGM 41756a). B, RGM 41756b, detail of radial corallites of diverse shapes with calices pointing in different directions. C–E, RGM 41756a: C, detail of a short branchlet showing axial corallite. D, detail of nariform radial corallite with costate wall and tubular to subimmersed radials. E, detail of simple to lateral flattened spinules on intercorallite coenosteum.
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