ramiform$550828$ - definizione. Che cos'è ramiform$550828$
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In questa pagina puoi ottenere un'analisi dettagliata di una parola o frase, prodotta utilizzando la migliore tecnologia di intelligenza artificiale fino ad oggi:

  • come viene usata la parola
  • frequenza di utilizzo
  • è usato più spesso nel discorso orale o scritto
  • opzioni di traduzione delle parole
  • esempi di utilizzo (varie frasi con traduzione)
  • etimologia

Cosa (chi) è ramiform$550828$ - definizione

CLASS OF FISHES (FOSSIL)
Conodonts; Conodontophora; Conodonta; Euconodonta; Ozarkodiniform; Conodontophorida; Conodont element; Coniform cones; Ramiform bars; Pectiniform platforms; Conodont apparatus; Conodont teeth; Conodont elements; Euconodont; Platform conodont; Multielement conodont
  • Preserved articulated association of conodont elements belonging to the species ''[[Archeognathus]] primus'' (Ordovician, North America)
  • Figures 1, 2. Conodonts from the Deer Valley Member of the Mauch Chunk Formation, Keystone quarry, Pa. This collection (93RS–79c) is from the lower 10 cm of the Deer Valley Member. Note the nonabraded, although slightly broken, conodont elements of the high-energy oolitic marine facies of the Deer Valley Member.<br>1. ''[[Kladognathus]] sp.'', Sa element, posterior view, X140 2. ''[[Cavusgnathus]] unicornis'', gamma morphotype, Pa element, lateral view, X140 <br>3–9. Conodonts from the uppermost Loyalhanna Limestone Member of the Mauch Chunk Formation, Keystone quarry, Pa. This collection (93RS–79b) is from the upper 10 cm of the Loyalhanna Member. Note the highly abraded and reworked aeolian forms. <br>3, 4. ''[[Kladognathus]] sp.'', Sa element, lateral views, X140 <br>5. ''[[Cavusgnathus]] unicornis'', alpha morphotype, Pa element, lateral view, X140 <br>6, 7. ''[[Cavusgnathus]] sp.'', Pa element, lateral view, X140 <br>8. ''[[Polygnathus]] sp.'', Pa element, upper view, reworked Late Devonian to Early Mississippian morphotype, X140 <br>9. ''[[Gnathodus]] texanus?'', Pa element, upper view, X140 <br>10–14. Conodonts from the basal 20 cm of the Loyalhanna Limestone Member of the Mauch Chunk Formation, Keystone quarry, Pa. (93RS–79a), and Westernport, Md. (93RS–67), note the highly abraded and reworked aeolian forms <br>10. ''[[Polygnathus]] sp.'', Pa element, upper view, reworked Late Devonian to Early Mississippian morphotype, 93RS–79a, X140 <br>11. ''Polygnathus sp.'', Pa element, upper view, reworked Late Devonian to Early Mississippian morphotype, 93RS–67, X140 <br>12. ''[[Gnathodus]] sp.'', Pa element, upper view, reworked Late Devonian(?) through Mississippian morphotype, 93RS–67, X140 <br>13. ''[[Kladognathus]] sp.'', M element, lateral views, 93RS–67, X140 <br>14. ''[[Cavusgnathus]] sp.'', Pa element, lateral view, 93RS–67, X140}}
  • Complete element set of the conodont ''[[Hindeodus parvus]]''
  • Model of elements of ''Manticolepis subrecta'' – a conodont from the Upper Frasnian of Poland – photography taken in the Geological Museum of the Polish Geological Institute in Warsaw

conodont         
['k??n?d?nt]
¦ noun Palaeontology an extinct marine creature with a long worm-like body and numerous small teeth, now believed to be the earliest vertebrate.
?(also conodont element) a tooth of a conodont, often found as a fossil.
Origin
C19: from mod. L. Conodonta (name of a class), from Gk konos 'cone' + odous, odont- 'tooth'.
Conodont         
·noun A peculiar toothlike fossil of many forms, found especially in carboniferous rocks. Such fossils are supposed by some to be the teeth of marsipobranch fishes, but they are probably the jaws of annelids.

Wikipedia

Conodont

Conodonts (Greek kōnos, "cone", + odont, "tooth") are an extinct group of agnathan (jawless) vertebrates resembling eels, classified in the class Conodonta. For many years, they were known only from their tooth-like oral elements, which are usually found in isolation and are now called conodont elements. Knowledge about soft tissues remains limited. They existed in the world's oceans for over 300 million years, from the Cambrian to the beginning of the Jurassic. Conodont elements are widely used as index fossils, fossils used to define and identify geological periods. The animals are also called Conodontophora (conodont bearers) to avoid ambiguity.