ʻO wai nā trilobite?
Trilobites Pau ʻole papa nā ʻōkuhi mua i ʻike ʻia ma ka honua. Ua noho lākou ma nā moana kahiko ma mua o 250,000,000 mau makahiki i hala. ʻIke ʻo Pontontologists i kā lākou mau mōʻalihaku ma nā wahi āpau.
Ua mālama kekahi i ko lākou kala ola. Ma kahi o nā hale hōʻikeʻike āu e ʻike ai i kēia mau hōʻike kupaianaha, hōʻiliʻili kekahi iā lākou ma ka home. nolaila trilobites hiki ke ʻike ʻia i ka lehulehuhe kiʻi.
Loaʻa iā lākou ko lākou inoa mai ko lākou kino. Ua mahele ʻia kā lākou iwi i ʻekolu mau ʻāpana. Eia kekahi, hiki i ka lōʻihi a me ka transverse. Ua pālahalaha a ʻano ʻē kēia mau holoholona prehistoric.
I kēia lā aia ma kahi o 10,000 mau ʻano. No laila, kūpono lākou i ka manaʻo ʻo ka wā Paleozoic ke au o nā trilobite. Ua make lākou i 230 mau makahiki i hala aku nei, e like me kekahi o ke kuhiakau: ʻai loa ʻia lākou e nā holoholona ʻē aʻe.
Nā hiʻohiʻona a me nā wahi noho o nā trilobites
Wehewehe helehelena trilobite ma muli o nā ʻano ʻike like ʻole a me nā noiʻi i mālama ʻia e nā ʻepekema. Pālahalaha ke kino o ka holoholona prehistoric. A uhi ʻia me ka pūpū paʻakikī, ʻo ia nā ʻāpana he nui.
ʻO ka nui o kēia mau mea mai 5 mm (conocoryphus) a i 81 cm (isotelus). Hiki ke kau ʻia nā pepeiaohao a i ʻole nā kakalaioa lōʻihi ma ka pale. Hiki i kekahi o nā laha ke pelu i ko lākou kino palupalu, e uhi ana iā lākou iho me kahi pūpū. Aia ka waha e waiho ana ma ka peritoneum.
Hoʻokau pū ʻia ka pūpū e hoʻopili i nā mea kūloko. I nā trilobite liʻiliʻi, he chitin wale nō ia. A no nā mea nui, ua impregnated pū ʻia me ka calcium kalapona, no ka ikaika nui aʻe.
He ʻano semicircular ke poʻo, a uhi ʻia me kahi pale kūikawā, lawelawe ʻia i mea pale no ka ʻōpū, ka puʻuwai a me ka lolo. Aia kēia mau mea ola nui, e like me ka ʻepekema, i loko.
Nā lālā ma trilobites hana i kekahi mau hana: kaʻa, hanu a me ka nau. ʻO ke koho ʻana o kekahi o lākou kaukaʻi ʻia i ka wahi o nā hale lole. Palupalu lākou āpau a no laila ʻaʻole mālama pinepine ʻia i nā fossil.
Akā ʻo ka mea kupaianaha o kēia mau holoholona, ʻo ka noʻonoʻo, a i ʻole ka maka. ʻAʻohe o lākou ʻano laha: noho lākou i ka wai lepo a hohonu paha i lalo. ʻO nā mea ʻē aʻe iā lākou ma nā wāwae ikaika: ke kanu nā trilobites iā lākou iho i ke one, ua mau ko lākou mau maka i ka papa.
Akā ʻo ka mea nui, he ʻano helehelena paʻakikī ko lākou. Ma kahi o nā aniani maʻamau, loaʻa iā lākou nā aniani i hana ʻia me ka helu mineral. Ua hoʻonohonoho ʻia ka ʻili o ka maka i mea e loaʻa ai i nā arthropods kahi 360-kekona o ka nānā.
I ke kiʻi, ka maka o kahi trilobite
ʻO nā ʻāpana o ka hoʻopā ʻana i nā trilobites he antennae lōʻihi - antennae ma ke poʻo a kokoke i ka waha. ʻO ka nohona o kēia mau arthropods ka mahele kai, akā ua noho kekahi a ua ʻau i ka limu. Aia kekahi mau manaʻo e pili ana kekahi mau hiʻohiʻona e noho ana i ka kolamu wai.
Evolution a i ka manawa hea i noho ai nā trilobites
I ka manawa mua loa trilobites ua ʻike ʻia ma ka Cambrian wā, a laila hoʻomaka ka ulu o kēia papa. Akā i kēia manawa ʻo Carboniferous ua hoʻomaka lākou e make iki. A i ka hopena o ke au Paleozoic, ua nalowale loa lākou mai ke alo o ka Honua.
ʻO ka hapanui, ua iho mai kēia mau arthropods mai ka Vendian primitives. I ke kaʻina evolution o trilobites loaʻa i ka ʻāpana caudal a me ke poʻo, ʻaʻole i hoʻokaʻawale ʻia i nā ʻāpana, akā uhi ʻia me hoʻokahi pūpū.
I ka manawa like, ua hoʻonui ka huelo, a ua ʻike ʻia ka hiki ke wili. Ua kūpono ia i ka wā i puka mai ai nā cephalopods a hoʻomaka i ka ʻai ʻana i kēia mau arthropods.
I ke ao hou, ua noho ʻia ka hakahaka o nā trilobite e nā isopod (isopods). ʻIke nui lākou e like me kahi lāhui luku, ʻokoʻa i nā antennae mānoanoa e pili ana i nā ʻāpana nui. Puka mai trilobites loaʻa kahi nui waiwai no ka hoʻomohala ʻana i ka honua holoholona a hāʻawi i ka impetus i ka puka ʻana o nā meaola paʻakikī.
ʻO nā ulu āpau o nā trilobite i hana ʻia e like me ke kumumanaʻo o ka evolution. Na ke ʻano o ke koho kūlohelohe ʻana mai nā ʻano maʻalahi o nā arthropods, ʻoi aku o nā mea paʻakikī - nā mea "hemolele". ʻO ka refutation wale nō o kēia kuhiakau ʻo ia ka hanana paʻakikī paʻakikī o ka maka trilobite.
Loaʻa i kēia mau holoholona luku ka ʻōnaehana ʻike paʻakikī loa, ʻaʻole hiki ke hoʻohālikelike ʻia ka maka o ke kanaka me ia. A hiki i kēia manawa, ʻaʻole hiki i nā ʻepekema ke hoʻoponopono i kēia mea pohihihi. A ʻōlelo pū lākou i ka ʻōnaehana ʻike i kahi hana hoʻohaʻahaʻa i ka wā o ka evolution.
ʻO ka meaʻai Trilobite a me ka hana hou
Nui a hewahewa nā ʻano o ka trilobites, a ʻokoʻa hoʻi ka papaʻai. Ua ʻai kekahi i ka silt, a ʻo plankton kekahi. Akā, he poʻe ʻaihue kekahi, ʻoiai ka nele o nā auwae kamaʻāina. Kūleʻa lākou i ka meaʻai me ka tentacles.
I ke kiʻi, isotelus ka trilobite
I ka mea hope loa, ua loaʻa nā koena o nā mea e like me ka worm, nā ʻāpala a me nā brachiopod i loko o ka ʻōpū. Manaʻo ʻia ua ʻimi a ʻai lākou i nā mea ola e noho ana i ka honua. Hiki trilobites ʻai a ʻAmona... Eia kekahi, ʻike pinepine ʻia lākou ma kahi kokoke i nā fossil i loaʻa.
Ke nānā nei i nā koena, ua hoʻoholo ka poʻe ʻepekema he heterosexual ka trilobites. Hōʻoia kēia e ka ʻeke i hoʻopaʻa ʻia i ʻike ʻia. I ka mua, ua pae ʻia mai kahi larva mai kahi hua manu i hoʻomoe ʻia, ma kahi o ka millimeter ka nui, a hoʻomaka e neʻe passively i ke kolamu wai.
He kino holoʻokoʻa kāna. Ma hope o kekahi manawa, mahele koke ʻia i 6 ʻāpana. A ma kahi o ke ola holoʻokoʻa, ua nui nā molts i kū, a ma hope o ka nui ʻana o ka nui o ke kino o ka trilobite ma ka hoʻohui ʻana i kahi ʻāpana hou. I ka hōʻea ʻana i kahi mokuʻāina piha, hoʻomau ka molopeki, akā ua hoʻonui wale ia i ka nui.
