Additions to the records for decapod Crustacea from Motunau and Glenafric Beaches, North Canterbury, New Zealand

Feldmann, Rodney M.; Schweitzer, Carrie E.; McLauchlan, Don

doi:10.1080/00288306.2006.9515178

Cited by 11 publications

(6 citation statements)

References 28 publications

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“…Simpson (1972b) considered this penguin-bearing concretion to be derived from the Greta Siltstone and noted the plausible age range was rather broad (middle Miocene to early Pleistocene), although he considered a late Pliocene age to be most probable. More recently, Feldmann and Keyes (1992) concluded a middle-late Miocene age to be most likely for the Greta Siltstone, but because index fossils have not been reported, this age remains poorly constrained (discussed in Feldmann et al, 2006). Spheniscidae first appear in the fossil record in the middle/late Miocene (Gö hlich, 2007), consistent with a recent radiation of crown penguins replacing more basally divergent taxa early in the Neogene .…”

Section: Discussionmentioning

confidence: 99%

The Basal Penguin (Aves: Sphenisciformes) Perudyptes devriesi and a Phylogenetic Evaluation of the Penguin Fossil Record

Ksepka

Clarke

2010

Bulletin of the American Museum of Natural History

110

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Section: Discussionmentioning

confidence: 99%

The Basal Penguin (Aves: Sphenisciformes) Perudyptes devriesi and a Phylogenetic Evaluation of the Penguin Fossil Record

Ksepka

Clarke

2010

Bulletin of the American Museum of Natural History

110

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“…Molecular clock analyses might, however, be influenced by a low sequence diversity within the Lithodidae (Snow, 2010;Matzen da Silva et al, 2011b). On the other hand, the deposit from which P. debodeorum has been discovered is difficult to date precisely (Feldmann, 1998;Feldmann, Schweitzer & McLauchlan, 2006), leaving a relatively recent radiation, reflected in low genetic variation, as a possibility. A low sequence divergence within Lithodidae was also found in our own sequence data, especially for the nuclear rRNA subunits.…”

Section: Age Of the Origin Of The Lithodidaementioning

confidence: 99%

The origin of king crabs: hermit crab ancestry under the magnifying glass

Noever

Glenner

2017

Zoological Journal of the Linnean Society

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The origin of king crabs from a hermit crab ancestor has caused controversy for more than a century. While the phylogenetic position of Lithodidae within the hermit crab family Paguridae has been strengthened in recent years, several key questions regarding the evolution of lithodid crabs have remained unanswered. In particular, it has been debated which hermit crabs constitute the closest extant relatives to lithodid crabs within Paguridae. Also, the relationships of the two lithodid subfamilies, Lithodinae and Hapalogastrinae, are unresolved. Answers to these questions are crucial to the understanding of the origin of king crabs, in particular which factors were the driving forces behind leaving a protective housing, transforming to a crab-like morphology and finally developing a large body size. To address these questions, we constructed the most comprehensive molecular phylogeny of Paguridae and Lithodidae to date. Our analyses revealed a species-rich clade of hermit crabs as closest relatives to lithodid crabs within Paguridae. Hermit crabs included in this clade have a predominantly shallow-water distribution in the North Pacific, agreeing with a proposed origin of lithodid crabs in this region. We suggest that the advances resulting from abandoning a shell-inhabiting lifestyle, rather than constraints of such shelters, played a central role in carcinization in this taxon. Phylogenetic relationships within Lithodidae revealed its two subfamilies to be non-monophyletic. Small-sized, shallow-water taxa are basal in the phylogenetic tree, while an increase in size and subsequent deep-sea distribution occurred later in the evolution of the group.

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“…The sole cancrid crab known today from New Zealand and Tasmania, M . novazealandiae , is also known from the middle or late Miocene of South Island, New Zealand (Feldmann et al, 2006). It is unclear if Metacarcinus traveled a similar route as Romaleon , from Chile along the Antarctic coast westward to New Zealand.…”

Section: Discussionmentioning

confidence: 99%

First fossil crabs (Crustacea, Decapoda, Brachyura) from the Kerguelen Islands (Miocene) with exceptionally preserved gills

Robin¹,

Bakel²,

Blanc-Valleron³

et al. 2018

J. Paleontol.

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Kerguelen Islands are predominantly volcanic lands, thus fossil references are very uncommon. However, its Miocene fossils are of specific interest for understanding migration routes of some taxa during the Cenozoic, given the intermediary position of Kerguelen with various continents. Despite this fossil rarity, we studied herein hundreds of nodules corresponding to the sole known fossil brachyurans (and unique Decapoda) from Kerguelen both for their systematics and their preservation. Indeed, these crabs display some internal fragile structures that are rarely fossilized, such as the gills’ branchial lamellae, preserved in volume. The preservation of these gills and their diagenetic features were documented through traditional imagery (SEM), including morphological comparison to modern gills, and with petrographic and geochemical analyses (EDS, X-ray diffractometry). Some cheilostome bryozoans were observed as probable foulers of the crabs carcasses. The fossil material corresponds to a new cancrid crab (Romaleon franciscaen. sp.) and its occurrence may imply a novel route from South America westward for the geographic migration of the genusRomaleon, since its Cretaceous emergence. The cup-shape and the number and the organization of the gills in these fossil Cancridae specimens are similar to those observed in their extant representatives. Gill preservation in 3D is linked to very early phosphatization of the system during diagenesis, as shown by the nodule matrix, and likely to deposition of a thin clayey cover on the soft-tissues. The implication of intrinsic phosphorous in the differential phosphatization of the crabs’ anatomy remains difficult to determine.

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Additions to the records for decapod Crustacea from Motunau and Glenafric Beaches, North Canterbury, New Zealand

Cited by 11 publications

References 28 publications

The Basal Penguin (Aves: Sphenisciformes) Perudyptes devriesi and a Phylogenetic Evaluation of the Penguin Fossil Record

The Basal Penguin (Aves: Sphenisciformes) Perudyptes devriesi and a Phylogenetic Evaluation of the Penguin Fossil Record

The origin of king crabs: hermit crab ancestry under the magnifying glass

First fossil crabs (Crustacea, Decapoda, Brachyura) from the Kerguelen Islands (Miocene) with exceptionally preserved gills

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