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Bed, Parish, Jamaica Contr. Tert. Quatern. Geol. 35(1-4) 113-127 1 tab., 2 pis. Leiden, April 1998 Decapod, stomatopod and cirripede Crustacea from the Pliocene Bowden shell bed, St Thomas parish, Jamaica Joe S.H. Collins LONDON, ENGLAND AND Roger W. Portell FLORIDA MUSEUM OF NATURAL HISTORY GAINESVILLE, FLORIDA, U.S.A. Collins, Joe S.H. & Roger W. Portell. Decapod, stomatopod and cirripede Crustacea from the Pliocene Bowden shell bed, St Thomas parish, Jamaica. In: Donovan, S.K. (ed). The Pliocene Bowden shell bed, southeast Jamaica. — Contr. Tert. Quatern. Geol., 35(1-4): 113-127,1 tab., 2 pis. Leiden, April 1998. Twenty eight decapods have been identifiedfrom the Pliocene Bowden shell bed, Bowden Formationof southeast Jamaica. They consist mostly of and fixed and known concentration of Pliocene recorded within the dactyli fingers, represent the greatest crustaceans from any one locality Caribbean. A which consists of and barnacle and stomatopod, a partial raptorial claw, three genera,Arcoscalpellum, Conopea, Ceratoconcha, also in this taxa are present deposit. The stomatopod and Conopea represent the first known occurrence of these in the Caribbean fossil record. Key words —- Bowden shell bed, Pliocene, Decapoda, Stomatopoda, Cirripedia. J.S.H. Collins, 8 Shaw's Cottages, Perry Rise, Forest Hill, London SE23 2QN, England; R.W.Portell, Florida Museum of Natural History, University ofFlorida, P.O. Box 117800,Gainesville, Florida 32611-7800, U.S.A. Contents identification adopted herein. The continuing refinement of phylogenetic lines, as presently recognised, since the Plio- must also be taken into consideration. Introduction p. 113 cene 114 Nevertheless, the number of taxa (28 in 26 genera) here Systematic palaeontology p. from the Bowden shell bed, is not Acknowledgements p. 118 recognised only greater than that recorded from either of the other two formations References p. 119 mentionedabove, but represents the greatest known concen- tration of Pliocene recorded from crustacean species any one within Caribbean Introduction locality the region. As presently ascer- tained, twelve of the to the fossil record generaare new of Jamaica, seven are common to the Falmouth This paper completes a major review of the Plio-Pleistocene Formation, decapod and cirripede crustaceans of Jamaica, begun by eleven are common to the Port Morant Formation, and five to all three formations Table One Morris (1993) with a survey of species from the late Pleisto- are common (see 1). genus, the Pacific of Central cene Falmouth Formation of Jamaica's central north coast, Chlorilia, presently occurs on coast followed and the here attributed and by a report on the crabs and barnacles from the America, species to Platylambrus related Pacific forms. coeval Port Morant Formation, as exposed on the southeast Portunus are more closely to coast The coast of the island (Collins et al., 1997). In addition, notice is only other known fossil species of Mesorhoea is Mesorhoea given ofthe first fossil stomatopod remains from the Carib- mauryae, described by Rathbun (1919) from the Miocene of bean region. Santo Domingo, and is, according to Rathbun, related to the The fragmentary preservation of much of the Pliocene form here attributedto Mesorhoeaaff. sexspinosa Stimpson, Bowden shell bed crab material(consisting largely of dactyli 1871. and fixed note fingers), together with the proximity of these parts Two other generaof among those new to the fossil within allied has influenced the broad record of Jamaica Cancer and Cancer closely genera, greatly are Hyas. species are 114 from the Plio-Pleistocene 1966 — 1. known of eastern North America. Platybalone sp. Caldwell, p. 339, fig. Nations 1979 Ctenocheles — Blow Clark & 495. According to (1975), Cancer species are sensitive to sp. in Fitch, p. water temperature and the distribution of Recent eastern Material — Caldwell for North American species extends only to the Bermudas. One finger; see (1966, p. 340) No additional of this located in Similarly, Recent Hyas occurs only in more northerly waters. figure. specimens genus were the collections of the UWIGM. FLMNH, TU or Hence the (possible) occurrence of these two genera in the Remarks — needlefish Jamaican Pliocene either cooler climate Caldwell (1966) recorded a jaw that suggests a or a re-identified the claw of callianassid subsequent preference of the two genera for a coolerhabitat. was subsequently as a W.C. The As in the previous works cited, the crab fauna is domi- shrimp by Blow (in Clarke & Fitch, 1979). speci- nated by species of xanthids (35.7%), followed by majids men was collected from the Bowden series, that is, the (17.9%), portunids (10.7%), callianassids (7.1%), pagurids BowdenFormation, Old Pera beds and Port Morant Forma- in (7.1%), calappids (7.1%), parthenopids (7.1%), leucosiids tion modem usage. Caldwell's locality suggests that the (3.6%), and cancrids (3.6%). Unlike the other late Cenozoic specimen was collected from either the Old Pera beds or the BowdenFormation. Because of the of the loca- formations of Jamaica, callianassids are quite rare in the uncertainty tion and horizon which it it is doubtful that Bowden shell bed. at was collected, The this derived from the Bowden shell bed. fossil arthropod specimens discussed in this paper are specimen was it is reposited in the Invertebrate Paleontology Division of the However, included here for completeness. Florida Museum of Natural History (FLMNH, Gainesville, otherwise Florida), unless noted. All are identified by a University of Florida (UF) catalogue number. Most of the Superfamily Paguroidea Latreille, 1802 specimens discussed herein were derived from sieved bulk Family Diogenidae Ortmann, 1892 matrix samples collected from unit 2of the Bowden shell bed Genus Petrochirus Stimpson, 1859 (sensu Pickerill et al., 1998) in May 1990and June 1994 by a field crew from the FLMNH. Additional materials were Petrochirus cf. obtained from the collections of Tulane University (TU) and bahamensis (Herbst, 1791) the Geology Museum, University of the West Indies, King- PI. 1, Fig. 2a, b ston, Jamaica (UW1GM). Reference is made to Pickerill et Material— left fixed al. (1998) for a discussion of the sedimentology and palaeo- Two partial fingers, UF 68149 and UF environment of the Bowden shell bed. 68160. Remarks — Morris recorded Petrochirus from the (1993) sp. east shore of Rio Bueno Harbour, St Ann parish. Collins et SYSTEMATIC PALAEONTOLOGY al. (1997) reported P. bahamensis, the largest of the Recent Caribbean hermit crabs, to be common in the Port Morant Order Decapoda Latreille, 1803 Formation at Old Pera, St Thomas parish. Infraorder Anomura H. Milne Edwards, 1832 Superfamily Thalassinoidea Latreille, 1831 Callianassidae 1852 lat. Family Dana, s. Genus Paguristes Dana, 1852 Callianassa Genus Leach, 1814 s. lat. Paguristes sp. PI. 1, Fig. 3 ‘Callianassa’ sp. PI. 1, Fig. 1 Material— Left dactylus, UF 68215. Remarks — This specimen is a dactylus which, while dis- Material — Two partial fingers, UF 68120and UF 68125. tinct, is close to Paguristes lymani A. Milne Edwards & Remarks — Collins et al. (1997) recognised two genera, Bouvier, 1893, a common extant Caribbean species which is Neocallichirus and from the Pleistocene Port Glypturus, found at 27 to 1,600 m depth. The single specimen of Pa- Morant while Morris Formation, (1993) reported many guristes sp. from the Bowden shell bed represents its first of Callianassa specimens spp. from the Pleistocene Falmouth occurrence in the Jamaican fossil record. Elsewhere in the Formationat Rio Bueno Harbour, St Ann Parish. However, Caribbean Rathbun the region, (1935) reported genus from in with these comparison deposits, callianassid remains are the early Miocene Chipola Formation of northern Florida. an exceedingly rare occurrence in the Bowden shellbed. Infraorder Brachyura Latreille, 1803 Genus Ctenocheles Kishinouye, 1926 Superfamily Calappoidea de Haan, 1833 Family Calappidae de Haan, 1833 Ctenocheles sp. Genus Calappa Weber, 1795 115 Calappa aff. springeri Rathbun, 1931 Material— Right dactylus, UF 68135. PI. 1, Fig. 4 Remarks — This taxon is new to the fossil record of Jamaica. Rathbun (1935) recorded Hyas araneus (Linne, 1758) as Material— Fourteen UF 68087, UF 68095, UF right dactyli, occurring in the Pleistocene Leda Clay of Maine.The genus 68096, UF 68097, UF 68112, UF 68122, UF 68134, UF is also known from Pleistocene deposits in Scotland (A. Bell, 68161, UF 68165, UF 68172, UF 68175, UF 68183, UF 1896). Today, along the east coast of the UnitedStates, Hyas 68186 and UF 68193. occurs from Maine to Cape Hatteras, North Carolina Remarks — Caribbean Calappa springeri, a common Recent (Rathbun, 1925). species, is also known from the Pleistocene Port Morant Formation(Collins et al., 1997). Generally, the Bowden shell bed dactyli have a smoother surface than specimens from the Genus and Port Morant with of fine 1823 Formation, a single row granules on subgenus Mithrax (Mithrax) Desmarest, the aff. the upper margin. Calappa springeri was most taxon common decapod found in the Bowden shellbed. Mithrax (Mithrax) sp. PI. 1, Fig. 8a, b Genus Hepatus: Latreille, 1802 Material— A partial right fixed finger, UF 68201. Remarks — A common Recent genus throughout the Carib- Hepatus sp. bean region, this taxon is represented by limb fragments in PI. 1, Fig. 5a, b both the Falmouth and Port Morant Formations of Jamaica (Table 1). Exceptionally well-preserved carapaces of several Material— Partial left propodus, UF 75751, and partial right species of this genus have been described from the Pleisto- propodus, UF 75752. cene of Barbados (Collins & Morris, 1976). The single Remarks —The of Bowden has milled of propodus Hepatus princeps Flerbst, 1794, specimen a cutting edge typical the species presently occurring in Jamaicanwaters (Rathbun, Mithrax (M.) caribbaeus Rathbun, 1920, and M. (M.) spino- differs 1897), from the Bowden shell bed specimens in that sissimus (Lamarck, 1818), but lacks the ridge on the inner the basal of smoother. The two rows granules are relatively surface that is typical of the latter. Port Morant FormationHepatus praecox Collins et al., 1997, described from a carapace, has affinitieswith both H.
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