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- Els galeàspids (Galeaspida) són una classe extinta de peixos àgnats que van viure tant en aigua dolça com en el mar des del Silurià mitjà al Devonià inferior (430 a 370 milions d'anys enrere). Els seus fòssils s'han trobat a la Xina i el Vietnam. (ca)
- Die Galeaspida sind ausgestorbene kieferlose, fischartige Wirbeltiere, die im Silur und Devon lebten. Fossilien dieser sehr formenreichen Gruppe fand man in China, Tibet und im Norden Vietnams oft in küstennah abgelagerten marinen Sedimenten, sowie in Ablagerungen von Lagunen und Flussmündungen. Wahrscheinlich waren sie in der Region endemisch. (de)
- Los galeáspidos (Galeaspida) son una clase extinta de peces agnatos que vivieron tanto en agua dulce como en el mar desde el Silúrico Medio al Devónico Inferior (430 a 370 millones de años atrás). Sus fósiles se han hallado en China y Vietnam. (es)
- Galeaspida (from Latin, 'Helmet shields') is an extinct taxon of jawless marine and freshwater fish. The name is derived from galea, the Latin word for helmet, and refers to their massive bone shield on the head. Galeaspida lived in shallow, fresh water and marine environments during the Silurian and Devonian times (430 to 370 million years ago) in what is now Southern China, Tibet and Vietnam. Superficially, their morphology appears more similar to that of Heterostraci than Osteostraci, there being currently no evidence that the galeaspids had paired fins. A galeaspid Tujiaaspis vividus from the Silurian period of China was described in 2022 as having a precursor condition to the form of paired fins seen in Osteostraci and gnathostomes. Earlier than this, Galeaspida were already in fact regarded as being more closely related to Osteostraci, based on the closer similarity of the morphology of the braincase. (en)
- Galeaspida Galeaspida Galéaspides, vue d'artiste. Classe † Galeaspida, 1965 Ordres de rang inférieur
* †Eugaleaspidiformes
* †
* †
* † Galeaspida (les galéapsides en français) constituent une classe éteinte de vertébrés marins agnathes apparus au Silurien et disparus au Dévonien. (fr)
- I galeaspidi (Galeaspida) sono un gruppo di “pesci” primitivi, fossili del Siluriano e del Devoniano della Cina. (it)
- Galeaspida ("Elmos couraçados") é um extinto táxon de peixes sem mandíbulas marinhos e de água doce. Seu nome é derivado de uma palavra latina para elmo, galea, e refere-se a seus massivos escudos ósseos na cabeça. Galeaspida viveram em águas rasas e frescas e ambientes marinhos durante os períodos Siluriano e Devoniano (430 a 370 milhões de anos atrás) no que hoje é a China e o Vietnã. (pt)
- Galeaspida — вимерлий клас безщелепних морських та прісноводних риб, що існував у силурі та ранньому девоні (439—400 млн років тому). (uk)
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- 14026 (xsd:nonNegativeInteger)
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- Llandovery–Early Devonian, (en)
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- Eugaleaspidiformes (Liu, 1965) (en)
- Huananaspidiformes (Janvier, 1975) (en)
- Polybranchiaspidiformes (Janvier, 1996) (en)
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- Els galeàspids (Galeaspida) són una classe extinta de peixos àgnats que van viure tant en aigua dolça com en el mar des del Silurià mitjà al Devonià inferior (430 a 370 milions d'anys enrere). Els seus fòssils s'han trobat a la Xina i el Vietnam. (ca)
- Die Galeaspida sind ausgestorbene kieferlose, fischartige Wirbeltiere, die im Silur und Devon lebten. Fossilien dieser sehr formenreichen Gruppe fand man in China, Tibet und im Norden Vietnams oft in küstennah abgelagerten marinen Sedimenten, sowie in Ablagerungen von Lagunen und Flussmündungen. Wahrscheinlich waren sie in der Region endemisch. (de)
- Los galeáspidos (Galeaspida) son una clase extinta de peces agnatos que vivieron tanto en agua dulce como en el mar desde el Silúrico Medio al Devónico Inferior (430 a 370 millones de años atrás). Sus fósiles se han hallado en China y Vietnam. (es)
- Galeaspida Galeaspida Galéaspides, vue d'artiste. Classe † Galeaspida, 1965 Ordres de rang inférieur
* †Eugaleaspidiformes
* †
* †
* † Galeaspida (les galéapsides en français) constituent une classe éteinte de vertébrés marins agnathes apparus au Silurien et disparus au Dévonien. (fr)
- I galeaspidi (Galeaspida) sono un gruppo di “pesci” primitivi, fossili del Siluriano e del Devoniano della Cina. (it)
- Galeaspida ("Elmos couraçados") é um extinto táxon de peixes sem mandíbulas marinhos e de água doce. Seu nome é derivado de uma palavra latina para elmo, galea, e refere-se a seus massivos escudos ósseos na cabeça. Galeaspida viveram em águas rasas e frescas e ambientes marinhos durante os períodos Siluriano e Devoniano (430 a 370 milhões de anos atrás) no que hoje é a China e o Vietnã. (pt)
- Galeaspida — вимерлий клас безщелепних морських та прісноводних риб, що існував у силурі та ранньому девоні (439—400 млн років тому). (uk)
- Galeaspida (from Latin, 'Helmet shields') is an extinct taxon of jawless marine and freshwater fish. The name is derived from galea, the Latin word for helmet, and refers to their massive bone shield on the head. Galeaspida lived in shallow, fresh water and marine environments during the Silurian and Devonian times (430 to 370 million years ago) in what is now Southern China, Tibet and Vietnam. Superficially, their morphology appears more similar to that of Heterostraci than Osteostraci, there being currently no evidence that the galeaspids had paired fins. A galeaspid Tujiaaspis vividus from the Silurian period of China was described in 2022 as having a precursor condition to the form of paired fins seen in Osteostraci and gnathostomes. Earlier than this, Galeaspida were already in fact r (en)
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- Galeaspida (en)
- Galeàspids (ca)
- Galeaspida (de)
- Galeaspida (es)
- Galeaspida (fr)
- Galeaspida (it)
- Galeaspida (pt)
- Galeaspida (uk)
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