| 释义 |
rostro-
used as combining form of rostrum in some scientific terms, as rostro-antennary, rostro-branchial, rostro-lateral; rostrocaudally adv.; rostro-ˈcarinate a. Archæol., of or pertaining to stone implements of a keeled and beaked shape, esp. those characteristic of the Oldowan and Sangoan cultures of the African Pleistocene, and to flint objects from the Red Crag deposits of East Anglia, formerly thought to be hand tools of late Pliocene date, but now believed to be natural formations; also ellipt. as n.
1888Huxley & Martin's Elem. Biol. 225 A rostro-antennary branch;..distributed to the antennule and rostrum.
1912R. Lankester in Phil. Trans. R. Soc. B. CCII. 295 We distinguish..an anterior surface, narrowed to the form of a keel and ending in a beak (hence we call the implement ‘rostro-carinate’) as a consequence of the oblique direction and convergence of the lateral surfaces, which approach one another so as to leave only a narrow keel-like ridge between them. 1934Jrnl. R. Anthrop. Inst. LXIV. 337 Among these large tools (which were afterwards called Sangoan), a number of well-made rostro-carinate forms is to be distinguished. 1952Mem. Geol. Survey Uganda VI. ii. 64 The most finely finished product is somewhat canoe-like in shape—sharp prow, blunt stern..; the less finished or those not elaborately shaped, rather like a flat bottomed boat or rostro-carinate. 1957J. K. Charlesworth Quaternary Era II. xxxviii. 1016 The Cromerian implements..are ochreous or orange-brown artefacts, often striated as at East Runton. The tools are usually made from heavy flakes but include rostrocarinates and crude Abbevillean forms. 1964K. P. Oakley Frameworks for dating Fossil Man iv. 176 Some [Oldowan flakes] were beak-shaped. [Note, p. 263] ‘Rostro-carinate’, a term which is better avoided since it suggests identification with the flaked flints well known under that name from the Crags of East Anglia which are now regarded to be of natural origin.
1960Jrnl. Compar. Neurol. CXV. 166/2 In the medial nucleus a topographic organization is suggested in which the nucleus has effectively made a 180° rotation rostro-caudally. 1975Nature 17 Apr. 617/2 There is also a gradient, though less steep, rostrocaudally along the eminentia.
1872H. A. Nicholson Palaeont. 151 The one nearest the rostrum ‘rostro-lateral’. |