cangkang foraminifera
DESCRIPTION
Cangkang ForaminiferaTRANSCRIPT
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CANGKANG FORAMINIFERA(FORAMINIFERA TEST)Forams test are generally composed of secreted calcium carbonate (CaCO3), but less commonly they may be composed of organic material or cemented particles scavanged from the sea floor.
Forams produce tests in range of shapes & sized(http://oceanworld.tamu.edu/students/forams/forams_what_is.htm)
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MORFOLOGI CANGKANGFORAMINIFERAMONOTHALAMUS:1. Bulat2. Botol3. Tabung4. Botol & Tabung5. Planispiral6. Planispiral-tidak teratur7. Palnispiral-lurus
POLYTHALAMUS:1. Uniformed2. Biformed3. Triformed4. Multiformed
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BAGIAN-BAGIAN DARI CANGKANG FORAMFORAMINIFERA BENTONIK KECILFORAMINIFERA PLANGTONIK
2 1 2 1 1 1 1 3 1 2 4 3 5
Dorsal Ventral Ventral Peripheral Dorsal
KamarSutura 1 1 1 AperturUmbilical area 2Proloculus
Ventral Dorsal Peripheral
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SUSUNAN KAMAR DARI CANGKANG FORAMINIFERA
Linier & mempunyai leher
TIDAK TERPUTAR
Curvilinier
Equitant
UNISERIAL
Planispiral coiled
UNIFORMED
TERPUTAR
Nautiloid
Involute
Evolute
Rotaloid
Helicoid
BISERIAL
TRISERIAL
POLYTHALAMUS TEST
BIFORMED
TRIFORMED
MULTIFORMED
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BENTUK-BENTUK DASARCANGKANG FORAM
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APERTURJENIS APERTUR:Primer, Sekunder dan Supplementary
POSISI APERTUR:
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APERTURBENTUK APERTUR
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ORNAMENTASI
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KOMPOSISI DINDING CANGKANGKhitin/TektinAglutinin/ArenaceousSilikaan (Siliceous)Gampingan (Calcareous)- Porselen- Hyalin- Gampingan granular- Gampingan yang kompleks
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CONTOH BERBAGAI JENIS KOMPOSISI DINDING CANGKANG FORAMINIFERA
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KOMPOSISI DINDING CANGKANG