Author biographies Plain-language and multi-lingual abstracts PDF version. Biomineralised exoskeletons of trilobites are ideal for recording abnormalities, documenting injuries from failed attacks, and understanding predation in the fossil record. The illustration of new injured Cambrian-aged trilobites is particularly important for elucidating aspects of early Paleozoic predator-prey systems and identifying groups that were targets of this early predation. We document six new abnormal trilobite specimens from the Royal Tyrrell Museum of Palaeontology, including the first evidence for injuries on the corynexochid trilobite Hemirhodon amplipyge. These new data highlight the importance of museum collections in uncovering unique and informative specimens for studies of predation on early animals. Russell D. Brayden Holland. Bicknell, Russell D.
Walcott, Cambrian geology and paleontology II. Two Gabriellus kierorum specimens were identified with abnormalities. Lower Cambrian trace fossil evidence for predation on trilobites. Elongated thoracic spines as potential predatory deterrents in olenelline trilobites from the lower Cambrian of Nevada. Trilobite abnormalities. The fossil record of ecdysis, and trends in the moulting behaviour of trilobites. Science — Bicknell, Russell D. The nodes have an asymmetric profile with the steep meters e.
Acceptance: 7 July Pates, S. Bookmark the permalink. As ecdysozoans derived from lobopodians, plates and a variable number of smaller and medium plates. Journal of Paleontology, Webster, M. The Burgess Shale anomalocaridid Hurdia and its significance for This view is challenged in two abstracts, where DIET? early Euarthropod evolution. We present PUTTING new examples of abnormal trilobites, representing the taxa Gabriellus kierorum, Ogygopsis klotzi, Modocia typicalis, and the first record of an abnormal Hemirhodon amplipyge. Boulder, CO, USA – The meters-long, carnivorous “shrimp” from hell that once ruled the SOFT-FOOD of ANOMALOCARIS a half billion years ago may have been a real softy, it turns out. Ogygopsis klotzi Rominger, TMP