Примери за trilobite

• Some, such as those on brachiopods, trilobites and chitinozoa, record information pooled by many specialists; others are the work of one or a few workers.

• Though commonly observed, blindness in trilobites remains difficult to explain in terms of adaptation.

• The trilobites are disarticulated and generally fragmentary, which may indicate that they have been subjected to post-mortem transport.

• Distribution of trilobites within these formations is random, and boundaries between the lithostratigraphic units are typically not exposed.

• The trilobite was collected from a bed that is 28 cm thick, composed of limestone (moderately resistant micritic mudstone to wackestone).

• The similarities are observed on the genus level, whereas on species level, trilobites from all these areas display a distinct endemicity.

• The latter is well illustrated, with comments on faunas and facies, and listing the trilobites which have been found in particular formations and members.

• Many specimens are incomplete, and this, together with their co-occurrence with fragmentary trilobites, spicules of sponges, sclerites of chancelloriids and other shelly organisms, suggests transportation.

• Wellpreserved, non-abraded brachiopods and club-like bryozoans are abundant, whereas gastropods and disarticulated trilobite cuticles are sparse.

• It also increases our knowledge of the evolution of early ontogeny in proetoid trilobites.

• We could all write of our first trilobite find.

• These cor relations are based on small shelly fossil and trilobite taxa.

• Skeletal grains are disarticulated and generally from brachiopods and trilobites.

• Much scarcer are other types of bituminous skeletal limestones, which consist mostly of crinoid ossicles associated with rare brachiopod and trilobite remains.

• Despite extensive searching, no specimens were found stratigraphically lower in the outcrop, and lack of exposure prevented sampling just above the trilobite occurrence.