placoderm वाक्य
उदाहरण वाक्य
मोबाइल
- Viviparity in " Incisoscutum " and the ptyctodontids show that these placoderms were the first K-strategists in relation to breeding.
- Despite the original interpretation presented by Denison in 1941, not all paleontologists agree that placoderms like " Bothriolepis " actually possessed lungs.
- Spiny sharks were another class of fish which appeared also in the fossil records during the Silurian at about the same time as the placoderms.
- In the early middle Devonian ( 416-385 Ma ), while the predatory placoderms dominated the seas, some sarcopterygians came into freshwater habitats.
- The various groups of placoderms were diverse and abundant during the Devonian, but became extinct at the end-Devonian Hangenberg event 360 million years ago
- The earliest antiarch placoderms first appeared in the Silurian period of the Paleozoic Era and could be found distributed on every continent by the Devonian period.
- The placoderm " Brindabellaspis stensioi " was once regarded as a weejasperaspid because of the similarities between its dermal plates to the other weejasperaspids.
- The ptyctodontid fishes are the only group of placoderms to display sexual dimorphism, where males have clasping organs and females have smooth pelvic fin bases.
- McLennegan s reason for studying the lake is for its remarkable property of prehistoric life washing ashore, such as tree-like ferns and placoderms.
- ""'Potangaspis " "'is an extinct genus of placoderm fish which existed in China during the Devonian period.
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