Patterns of caudal pneumaticity in <i>Giraffatitan</i> and <i>Apatosaurus</i> are complex and frequently include pneumatic hiatuses.
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Shading conventions follow Figure 4. The intermittent unilateral and bilateral pneumatic hiatuses (i.e., gaps in pneumatization) in Giraffatitan MB.R.5000 (‘Fund no’) contrast sharply with the very restricted pneumaticity in MB.R.2921 (‘Fund Aa’) and the isolated pneumatic features in Apatosaurus YPM 1980. YPM 1980 has the longest pneumatic hiatuses, unilaterally and bilaterally, that we have found to date in any dinosaur.
创建时间：
2016-02-23
