. Bulletin of the British Museum (Natural History). appear in many cases to be bordered by rims of calcification like those of T. spathulata, T. perplexa and T. musaica. The secondary calcified orifice slopes distaliy toward the basal wall, and there is a distinct, thickened suboral bar, as in many Cribrimorpha. Similar zooids are found in the ances- trular region of other species (see pp. 106, 121 and Fig. 1). Avicularia are small and randomly orientated; the bar is visible in many cases. All the brood chambers are broken frontally; they are raised, 'hyperstomial', and do not appear to have b
. Bulletin of the British Museum (Natural History). appear in many cases to be bordered by rims of calcification like those of T. spathulata, T. perplexa and T. musaica. The secondary calcified orifice slopes distaliy toward the basal wall, and there is a distinct, thickened suboral bar, as in many Cribrimorpha. Similar zooids are found in the ances- trular region of other species (see pp. 106, 121 and Fig. 1). Avicularia are small and randomly orientated; the bar is visible in many cases. All the brood chambers are broken frontally; they are raised, 'hyperstomial', and do not appear to have been closed by the operculum. The exact locality of T. magonnica was given as 'Lower Eocene, Djebel Blidji vers le Nord, sur Osirea punica'. Although it seems very probable that other, more southerly African fossil speci- mens of T. ma(oiwica remain to be discovered, none were reported by Gorodiski & Balavoine (1961) from the Eocene of Senegal. No fossil specimens of Tremogasterina were found from the Upper Miocene of Loanda by Buge & Galopim de Carvalho (1964).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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