Abstract The identity and source of flexible. semi-transparent. vascular-like components recovered from non-avian dinosaur bone are debated. because: (1) such preservation is not predicted by degradation models; (2) taphonomic mechanisms for this type of preservation are not well defined; and (3) although support for molecular endogeneity has been demonstrated in select specimens. https://fitnessgravesyardes.shop/product-category/generator-brake-controller/