4 ms·
Curious. I believed trilobites have just evolved into "horseshoe crabs".
by qwerty456127 2y ago
Curious. I believed trilobites have just evolved into "horseshoe crabs".
- dredmorbius 2y agoThe new specimens, which were killed and fossilised quickly when volcanic ash smothered them underwater more than 500 million years ago, show details never before seen in any trilobite... First sentence of TFA. This is not a claim that all trilobites were made extinct by volcanic ash, but that these fossils were the result of an ashfall, by which previously unavailable anatomical detail was preserved. The headline is misleading, but even the shallowest read of the article would have mooted your speculation.
- pvaldes 2y agoIs easy to identify them as that, but Arachnids and antennas are incompatible and Chelicerata (like horseshoe crabs) is the only group bearing chelicera. Crustaceans have two pairs of antennas and different shaped legs. Insects are (almost) non marine (a few notorious exceptions). Millipedes were never found on the sea and the head appendix were placed in different segments. But the new info about the mouth parts is extraordinary and could still lead to big discoveries and earthquakes in taxonomy. The problem with this animals is that all the mouth pieces that fossilized were from different types or in different positions compared with all arthropods alive or extinct that were not trilobites.