Devonian

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  • noun

Synonyms for Devonian

from 405 million to 345 million years ago

References in periodicals archive ?
Our study has shown that analysis of edge provides an adequate validation for two structures used to determine age of fish, otoliths and opercles, in the river redhorse, and that these structures are superior to scales in analysis of age.
The parameters for the von Bertalanffy growth equation and their 95% CLs were estimated from the lengths at age of fish at the date of capture by employing the nonlinear regression routine in SPSS (IBM Corp.
Correctly determining the age of fish, particularly elasmobranchs, is crucial if (unbiased) time-based life history rates such as growth, maturity, and mortality are to be estimated.
Age of fish Region of tag recovery and region of tagging EPS WPS NPR SNC Out-of-state Total Age 1 EPS 429 4 7 73 6 519 WPS 236 5 11 5 1 258 NPR 234 1 2119 66 1 2421 SNC 8 1 12 303 0 324 Age 2 EPS 524 12 10 9 17 572 WPS 80 3 2 1 1 87 NPR 158 4 813 64 1 1040 SNC 6 3 1 243 1 254 Age 3 EPS 78 0 2 2 0 82 WPS 3 0 0 0 0 3 NPR 1 0 27 2 0 30 SNC 0 0 0 34 0 34 Age 4+ EPS 225 11 94 4 7 341 WPS 1 0 1 0 0 2 NPR 29 3 127 1 0 160 SNC 1 0 1 43 1 46 Total 2013 47 3227 850 36 6173 Table 3 Summary of movement information for four age groups of red drum (Sciaenops ocellatus) in estuarine and coastal waters of North Carolina based on their age at tagging, 1983-2007.
The observed lengths at age of fish were assumed to be normally distributed about the predicted lengths at age for each sex, and to have a common standard deviation.
Overall, catch-at-age data indicated that inshore lizardfish did not fully recruit to the study sites until age three, but the mean age of fish sampled in summer was slightly less than 3 yr.
Age of fish was estimated by examining whole otoliths for fish less than 80 cm FL and thin sections were prepared for aging larger fish (DeVries and Grimes, 1997).
With the exception of the oldest age of fish at recapture, the fishing mortality rates also tend to be estimated with good precision (CVs of less than 0.
Otolith increments from known-age fish were enumerated to validate that growth increments were deposited daily and to validate the age of fish at first ring formation.