scholarly journals New thylacocephalans from the Cretaceous Lagerstätten of Lebanon

2017 ◽  
Vol 188 (3) ◽  
pp. 19 ◽  
Author(s):  
Sylvain Charbonnier ◽  
Giorgio Teruzzi ◽  
Denis Audo ◽  
Maxime Lasseron ◽  
Carolin Haug ◽  
...  

Thylacocephalans (Euarthropoda, Thylacocephala) are characterized by their “bivalved” carapace and three anterior prehensile appendages. It is still not clear how they used to live, or what their evolutionary history is. This study focuses on new thylacocephalans from the Late Cretaceous Konservat-Lagerstätten of Lebanon, which yielded the youngest representatives of the group. Three new genera and species are described in the Cenomanian sublithographic limestones of Hakel and Hadjoula, and two new genera and one new species are described in the Santonian chalky limestones of Sahel Alma. Among the specimens from Hakel and Hadjoula, Paradollocaris vannieri, Thylacocaris schrami and Globulacaris garassinoi are the first reports of thylacocephalans in the Cenomanian of Lebanon. Paradollocaris and Thylacocaris are assigned to Dollocarididae based upon their large optic notches limited by rostral and antero-ventral processes, their hypertrophied eyes, and their posterior notches with dorsal and ventral spines. Moreover, Thylacocaris presents a very peculiar character: an optic notch with two strong optic spines protecting the eye. Globulocaris is assigned to Protozoeidae based upon its small carapace with a distinct dorsal notch anterior to a strong postero-dorsal spine. Among the specimens from Sahel Alma, Keelicaris deborae is a new form of thylacocephalans in the Santonian of Lebanon. It presents a very unusual keel-shaped carapace with terraces and punctuations, and is assigned to Microcarididae. The new genus Hamaticaris, presenting a very peculiar hooked rostrum, is also erected for Protozoea damesi Roger, 1946 (Roger J. 1946. Invertébrés des couches à poissons du Crétacé supérieur du Liban. Mémoires de la Société géologique de France (Nouvelle série) 51: 5–92). These two species add to the well-known thylacocephalans from Sahel Alma: Pseuderichtus cretaceus Dames, 1886 (Dames W. 1886. Ueber einige Crustaceen aus den Kreideablagerungen des Libanon. Zeitschrift der Deutschen Geologischen Gesellschaft 38: 551–575), Protozoea hilgendorfi Dames, 1886 and Thylacocephalus cymolopos Lange et al., 2001 (Lange S, Hof CHJ, Schram FR, Steeman FA. 2001. New genus and species from the Cretaceous of Lebanon links the Thylacocephala to the Crustacea. Palaeontology 44 (5): 905–912). The occurrence of such diverse fauna of thylacocephalans markedly increases the diversity of the group during the Late Cretaceous. The diversity and abundance of the Sahel Alma thylacocephalans pose also the problem of causes of their disappearance from the fossil record after the Santonian.

1998 ◽  
Vol 72 (2) ◽  
pp. 317-331 ◽  
Author(s):  
Cees H. J. Hof ◽  
Frederick R. Schram

The scarce fossil record of stomatopod crustaceans is extended with three new species and two new genera described from the Miocene of California. Squilla laingae new species and Angelosquilla altamirensis new genus and species show clear affinities to the Recent family Squillidae. Topangasquilla gravesi new genus and species can be accommodated within the Recent family Lysiosquillidae. These new species occur in the Monterey and Topanga Formations in Los Angeles County. In addition, three other specimens are described from the Miocene Topanga Formation. The preservation of these stomatopods is among the best noted for any fossils of this group. These specimens show characteristic stages of decay that clearly correspond with those noticed in taphonomic experiments with Recent stomatopods.


2017 ◽  
Vol 22 (3) ◽  
pp. 341
Author(s):  
Mercia Elias Duarte ◽  
Edmilson Santos Silva ◽  
Denise Navia

Eight new taxa of Eriophyidae mites associated with native trees in the Cupania genus—C. oblongifolia Mart. and C. impressinervia Acev (Sapindaceae)—from the Atlantic Forest in Brazil, are described and illustrated. They include two new genera and two new species of Nothopodinae, Colopodacini (Setibia domatiagena   gen. nov., sp. nov. and Aricolopodos alagoensis gen. nov., sp. nov.), one new genus and two new species of Cecidophyinae, Colomerini (Euryslobos keronidos gen. nov., sp. nov. and Gammaphytoptus cupanius sp. nov.), and one new species of Phyllocoptinae, Tegonotini (Shevtchenkella caboata sp. nov.).


Zootaxa ◽  
2021 ◽  
Vol 4948 (3) ◽  
pp. 363-380
Author(s):  
PAUL E. SKELLEY ◽  
RICHARD A. B. LESCHEN ◽  
ZHENHUA LIU

In preparation for upcoming studies, several new taxa of Australian Erotylinae (Coleoptera: Erotylidae) need to be described to make names available. New genera and species in Dacnini and Megalodacnini are described. Echinothallis banderbearella, new genus and species (Dacnini); Microdacne, new genus, with four new species (Dacnini), M. gloriousa, M. lamingtonia, M. nardia, M. styxia; and Episcaphula (Tropidoscaphula) megalodacnoides, new species (Megalodacnini). Variation of female terminalia and other characters in several genera are discussed regarding the monophyly and generic diversity of Dacnini. 


2016 ◽  
pp. 1 ◽  
Author(s):  
Michael S. Engel

A new genus and species of basal cyclostome Braconidae is described and figured from a male preserved in mid-Cretaceous amber from northern Myanmar.  <strong><em>Rhetinorhyssalus morticinus</em></strong> Engel, new genus and species, is interesting for its combination of primitive features such as a minute apical costal cell and anal stubs in the forewing, while lacking 2Cu in the hind wing, a putatively derived trait.  As such, the genus may represent a lineage diverging from the braconid stem subsequent to many protorhyssalines, while remaining basal relative to generalized cyclostome groups such as Rhyssalinae.  In addition, the Late Cretaceous <em>Diospilus allani</em> Brues, in Campanian Canadian amber, is transferred to <strong><em>Diorhyssalus</em></strong> Engel, new genus, and its similarity to <em>Rhetinorhyssalus</em> is discussed.  This transfer results in the new combination, <em>Diorhyssalus allani</em> (Brues).  Both genera are tentatively considered as subfamily <em>incertae sedis</em>.


1986 ◽  
Vol 60 (3) ◽  
pp. 606-626 ◽  
Author(s):  
Bruce L. Stinchcomb

Fourteen new species and six new genera of the molluscan class Monoplacophora are described from the Upper Cambrian Potosi and Eminence formations and the Lower Ordovician Gasconade Formation of the Ozark Uplift of Missouri and some new biostratigraphic horizons are introduced. A new superfamily, the Hypseloconellacea nom. trans. Knight, 1956, and a new family, the Shelbyoceridae, are named. The genus Proplina is represented by five new species: P. inflatus, P. suttoni from the Cambrian Potosi Formation, P. arcua from the Cambrian Eminence Formation and P. meramecensis and P. sibeliusi from the Lower Ordovician Gasconade Formation. A new genus and species in the subfamily Proplininae, Ozarkplina meramecensis, is described from the Upper Cambrian Eminence Formation. Four new monoplacophoran genera in the superfamily Hypseloconellacea and their species are described, including: Cambrioconus expansus, Orthoconus striatus, Cornuella parva from the Eminence Formation, and Gasconadeoconus ponderosa, G. waynesvillensis, G. expansus from the Gasconade Formation. A new genus in the new family Shelbyoceridae, Archeoconus missourensis, is described from the Eminence Formation and a new species of Shelbyoceras, S. bigpineyensis, is described from the Gasconade Formation.


Zootaxa ◽  
2008 ◽  
Vol 1817 (1) ◽  
pp. 65 ◽  
Author(s):  
C. L. BELLAMY

Following the itemization of the described Madagascan Coraebini (Buprestidae: Agrilinae) (Bellamy 2001a), additional new genera and species of this large fauna have been described (Bellamy 2001b, 2003, 2006). After a preliminary study of the perceived ant-mimicking species I have accumulated in loans from, and during previous visits to, the vast collection of this fauna held by the Muséum national d’Histoire naturelle, Paris, a new monotypic myrmecomorphic genus and species is described. All other putative ant-mimicking species amongst previously described and currently available specimens belong to the genus Entomogaster Saunders, 1871. The new genus is described now for the one new species found to not be congeneric with Entomogaster. In deference to the classification for the tribe Coraebini Bedel, 1921 presented by Kubáň, et al. (2001), the genus-group taxon described herein is provisionally placed in the subtribe Toxoscelina Majer, in Kubáň, et al., 2001.


2001 ◽  
Vol 92 (1) ◽  
pp. 97-102 ◽  
Author(s):  
J. Morales ◽  
M. J. Salesa ◽  
M. Pickford ◽  
D. Soria

ABSTRACTA new genus and species of felid, Ginsburgsmilus napakensis, is described from Napak, Uganda. Material from Songhor, Kenya, previously identified as Afrosmilus turkanae by Schmidt-Kittler (1987) is assigned to this species. A new species of Afrosmilus, A. hispanicus, is described from Artesilla, Spain. These new felid species combine sabre-tooth canines of maochairodont type with cheek teeth similar to those of Pseudailurus. Phylogenetically they are close to Afrosmilus turkanae which shows a greater specialisation towards markedly machairodont forms. On the basis of dental features, we propose a close relationship between these two genera (which we group into the new tribe Afrosmilini) and the tribe Barbourofelini (Sansanosmilus and Barbourofelis), the transition between the two being represented in the fossil record by Prosansanosmilus peregrinus Heizmann et al. 1980.


Acarologia ◽  
2019 ◽  
Vol 59 (3) ◽  
pp. 364-373
Author(s):  
Harry Smit

Recently collected material as well as material collected in the 1960s of Zelandopsis aturoides Schwoerbel, 1984 shows that this species does not belong in Zelandopsis, but in a new genus described in this paper. Moreover, a new genus was found in recent material from New Zealand, i.e. Acidoturus n. gen., with the type species A. parviscutatus n. sp.. A new subgenus of Momonia, i.e. Zelandomomonia, is erected to accommodate M. hopkinsi Schwoerbel, 1984. Furthermore, a redescription is given for Zelandopsis morimotoi Imamura, 1977 and the first description is given of the female of Notohygrobates kathrynae Cook, 1983.


Zootaxa ◽  
2009 ◽  
Vol 2121 (1) ◽  
pp. 64-68
Author(s):  
ZHAOHUI LUO ◽  
ZHAOZHI LU ◽  
WANZHI CAI

A new genus, Arcuatitibia Luo, Lu & Cai, and one new species, A. kerzhneri Luo, Lu & Cai, are described in the subfamily Reduviinae, based on the materials from Xinjiang, China. The dorsal habitus, male genitalia, and other diagnostic morphological features are illustrated.


2001 ◽  
Vol 75 (2) ◽  
pp. 295-309 ◽  
Author(s):  
Geerat J. Vermeij

This paper presents a review of Cretaceous to Eocene genera and species of the Cantharus group of the buccinoidean neogastropod subfamily Pisaniinae, the description of two new genera and one new species, and a nonphylogenetic discussion of character evolution in this group. The new genus Ickarus is introduced for Tritonidea ickei Martin, 1914, from the Nanggulan beds (middle Eocene) of Java, Indonesia. Editharus (type species: Fusus polygonus Lamarck, 1803, middle Eocene of the Paris Basin, France) is a new genus with seven to nine species ranging from the early to late Eocene of Europe. Editharus is unusual in having a labral tooth formed at the angular junction between the adapical and abapical sectors of the outer lip. Editharus angulilabris from the Marinesian (early late Eocene) is a new species from the Paris Basin closely related to E. polygonus. The incidence and expression of several characters has sharply increased in the Cantharus group from the Paleogene to the Neogene. These characters include the presence of lirae (spiral ridges) on the inner side of the outer lip, the presence of a parietal tooth at the adapical end of the inner lip, and determinate growth (as inferred from a unique adult varix). These trends are also exhibited by other Cenozoic gastropod clades.


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