. Bulletins of American paleontology. FusuLiNiD Wall Structure: Groves 203 Sample 30 volution no spec/men 1 1 1 1 P P P P f P P 2 P P P P P f f f ' 3 P P P P P P 4 P P P P P P â â â â â â KB 5 P P P P f f f 1 f 1 f 1 f 1 P 1 6 P P P f f P 7 P P P P P f f f p 8 P P P P f f f P p P P 9 P P P P P f P P p ~nH 10 P P P f f f P KIMfiSli 11 P P P P P P P 12 P P P P f f P 13 P P P f f f f p 14 P P P P P P P f p â a 15 P P P P P f f f P 16 P P f f f f P 17 P P P P f f P 18 P P P f f P p ^^^ â ^^^^ summary statistics | profusulinellid 18/18 18/18 17/18 13/18 8
. Bulletins of American paleontology. FusuLiNiD Wall Structure: Groves 203 Sample 30 volution no spec/men 1 1 1 1 P P P P f P P 2 P P P P P f f f ' 3 P P P P P P 4 P P P P P P â â â â â â KB 5 P P P P f f f 1 f 1 f 1 f 1 P 1 6 P P P f f P 7 P P P P P f f f p 8 P P P P f f f P p P P 9 P P P P P f P P p ~nH 10 P P P f f f P KIMfiSli 11 P P P P P P P 12 P P P P f f P 13 P P P f f f f p 14 P P P P P P P f p â a 15 P P P P P f f f P 16 P P f f f f P 17 P P P P f f P 18 P P P f f P p ^^^ â ^^^^ summary statistics | profusulinellid 18/18 18/18 17/18 13/18 8/18 7/18 9/16 3/8 3/5 1/2 n/a fusulinellid 0/18 0/18 1/18 5/18 10/18 11/18 7/16 5/8 2/5 1/2 n/a. 4.âExample data sheet for recording wall structure observations at half-volution increments (sample 30, N = 18 spec- imens). Abbreviations: p, profusulinellid-type wall; f, fusulinellid- type wall. Note that summary statistics and corresponding histogram do not include observations from the final Vi volution of unabraded specimens (, specimens 5, 8). The population represented in this sample includes specimens with exclusively profusulinellid-type walls {, specimens 3, 11), some with extremely limited devel- opment of fusulinellid-type walls ( specimens I, 9), and the remainder with moderate development of fusulinellid-type walls. This population is assigned to Fiisiilincllu primaeva (Skinner, 1931). is somehow inserted between the tectum and inner tec- torium. Clearly this interpretation cannot be supported by observations, nor does it make sense developmen- tally. I beheve a source of confusion for Thompson was the fact that the diaphanotheca in the fusuHnellid- type wall appears lighter than in the profusulinellid- type wall. This is probably because in the fusulinellid- type wall the diaphanotheca is sandwiched between two darker layers (tectum and ceiling epitheca), where- as in the profusulinellid-type wall it is adjacent to the tectum only a
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Keywords: ., bookauthorpaleonto, bookcentury1800, bookdecade1890, bookyear1895
