"Minimum standard";Definition
"Locator – Ontogeny";"“The process of individual development from a single cell, an egg cell or a zygote, to an adult organism is known as ontogeny.” (Cabej 2012: 307); “the development of vertebrate embryos proceeds from general features, which are shared by all of them, to more specific features” (Cabej 2012: 310)."
"Variable – Stage";"“Stage defines … a period of time. The word stage is explained as ‘one of the distinguishable periods of growth and development of a plant or animal’ (Merriam Webster).” (Cabej 2012: 310); “[a] spatiotemporal region encompassing some part of the life cycle of an organism” (UBERON:0000105); the stages and their definitions refer to the development of the turbinal skeleton."
"Character states";
"– Epithelial bulge";"Based on fissuration, the “[f]ormation of clefts into the nasal wall that result in projecting contours” (Smith et al. 2021a: 895)."
"– Mesenchymal condensation";"Process by which “… a simple mass with well-vascularized dispersed mesenchyme … condenses” (Smith et al. 2021a: 888)."
"– Mesenchyme";"“Portion of tissue composed of mesenchymal cells (motile cells that develop from epithelia via an epithelial to mesenchymal transition) and surrounding extracellular material. … In vertebrates, it derives largely from mesoderm, and sometimes the terms are used interchangeably, e.g., lateral plate mesoderm/mesenchyme” (UBERON:0003104)."
"– Chondrification";"“Cell condensation that is an aggregation of mesenchymal cells that are committed to differentiate into chondroblasts and chondrocytes” (UBERON:0005863; synonym Cartilaginous condensation)."
"– Cartilage";"“Skeletal tissue that is avascular, rich in glycosaminoglycans (GAGs) and typically includes chondrocytes within isolated lacunae. Cartilage tissue is deposited by chondroblasts” (UBERON:0002418)."
"– Endochondral ossification";"“Replacement ossification wherein bone tissue replaces cartilage” (UBERON:GO:0001958)."
"– Bone";"“Skeletal tissue with a collagen-rich extracellular matrix vascularized, mineralized with hydroxyapatite and typically including osteocytes located in lacunae that communicate with one another by cell processes (in canaliculi). Bone is deposited by osteoblasts.” (UBERON:0002481). Entire cartilaginous tissue has fully ossified; no cartilage remains (own definition F. Wagner)."